Alerta

一种基于ONT设备的量子融合密钥IPsec加密方法

Absstract of: CN122457327A

本发明涉及一种基于ONT设备的量子融合密钥IPsec加密方法，包括如下步骤：量子密钥生成：量子密码服务平台生成量子密钥；量子密钥获取：向量子密码服务平台申请并获取在线的量子密钥；IKE SA协商：生成IKESA会话密钥SKEYIDe；量子密钥融合：原始密钥与量子密钥进行融合；融合密钥下发：ONT上，融合密钥配置到内核层中；IPSec数据加密：调用所得会话密钥对报文进行封装加密，并发送至网络侧设备；量子密钥更新：周期性获取新的量子密钥并计算新的融合密钥。本发明通过量子密钥生成、获取、融合、加密、更新等步骤，解决传统IPSec加密在量子计算环境下的安全风险，具有提高通信安全性、抵御量子攻击的优点。

基于B92偏振编码量子通信感知一体化系统及方法

Absstract of: CN122457251A

本发明涉及量子通信技术领域，公开了基于B92偏振编码量子通信感知一体化系统，包括：量子态制备与发送模块、量子通信/传感信道、量子态接收与测量模块以及时间同步与数据后处理模块。本发明在不引入额外的专用参考光信号且不损害量子通信安全性的前提下，实现了量子密钥分发与环境物理量感知功能的深度集成与同步执行。通过量子信道同时传输密钥信息和感知环境扰动，并利用光量子态对环境扰动的高度敏感性，结合通信误码率或单光子计数统计特性提取扰动信息。本发明采用自由空间量子通信与传感信道集成了相位传感功能，实现了信号载体、传输信道与处理设备的资源共享，显著节约了量子资源，提升了整体系统的资源利用效率。

METHOD AND DEVICE FOR CLOCK SYNCHRONIZATION IN QKD

Absstract of: US20260213854A1

0000 The present invention relates to a clock synchronization method comprising the steps of determining (S101) whether the emitter and the receiver are within acceptable frequency range difference, calculating (S102) a drift difference accumulated over a chosen time and obtaining a time compensation based on it, applying (S103) a compensation either to the clock phase shift or to the external frequency generator, and continuously (S104) tracking a frequency difference change between the emitter and the receiver by repeating the above steps.

DUAL-LAYER QUANTUM COMMUNICATION AND INFORMATION PROCESSING USING TEMPORAL AND SPATIAL ENCODING

Absstract of: US20260213855A1

A method includes generating a photon and establishing a time-bin frame having a period T and multiple non-overlapping time bins of duration Δt. The method includes preparing a quantum state of the photon in a time-bin basis and in at least one additional quantum degree of freedom selected from polarization, OAM, and phase, thereby forming a composite quantum state. The method includes routing the photon to a selected emission point of a three-dimensional (3D) photonic structure having multiple emission points with respective spatial coordinates. The method includes synchronizing a sender and a receiver with a shared timing reference and time-gated detection windows aligned to the time bins, and emitting the photon from the selected emission point into a quantum channel. A combination of the time-bin state encoding quantum information and an emission-point coordinate associated with a spatial symbol and/or non-secret control metadata for protocol processing forms a composite codeword.

METHOD FOR SYNCHRONIZING LIGHT BEAMS IN THE DETECTION OF VERY WEAK OPTICAL SIGNALS CARRYING CLASSICAL OR QUANTUM INFORMATION

Absstract of: US20260213914A1

0000 The subject of invention is a method for synchronizing optical beams in the detection of very weak optical signals carrying classical or quantum information, based on quantum pulse gating implemented using a nonlinear optical medium. It is characterized in that the lower frequency optical beam leaving the nonlinear medium is monitored by a photodetector connected to an electronic module, which controls the optical delay line placed in the optical path of the control beam or the signal beam in such a way that the value of the time-averaged optical signal measured by the photodetector is as small as possible, while the correction of the delay line based on the measured signal occurs continuously or periodically. The higher frequency optical beam leaving the nonlinear medium is measured using an optical signal receiver capable of detecting the optical signal modulated in the modulation format of the transmitter generating the signal beam pulses.

量子もつれ光子対配信器、量子もつれ光子対配信装置および量子もつれ光子対配信システム

Absstract of: JP2026120098A

0001 【課題】高品質な量子もつれ光子対を得る。 【解決手段】光子対配信システム１０００において、量子もつれ光子対配信器１００は、パルス状の第１量子もつれ光子対Ｅ１を含む複数の量子もつれ光子対が入力されて伝搬し、複数の量子もつれ光子対のそれぞれにおいて対である光子を分けて出力する光路を有する光路部２０と、光路部から出力された複数の光子を合波して出力する第１光合波器３１及び第２光合波器３２を含む光合波器群３０と、を備え、光路部は、第１量子もつれ光子対から分けられて第１光合波器から出力される一方の光子の出力時刻と第２光合波器から出力される他方の光子の出力時刻との差分である第１差分が、複数の量子もつれ光子対から分けられた他の光子のうち任意の２つの光子対の一方が、第１光合波器から出力される出力時刻と他方の光子が第２光合波器から出力される出力時刻との差分である第２差分とは異なるように光路の光路長を構成する。 【選択図】図１

用于量子直接通信系统的量子信道建立方法和装置

Absstract of: CN122437614A

本申请提出一种用于量子直接通信系统的量子信道建立方法和装置，所述方法包括获取用于传输量子态信号的当前量子信道的量子信道参数；对所述量子信道参数进行全局扫描，以补偿由于工作环境变化产生的信道参数漂移；计算所述当前量子信道的误码率；当计算的误码率小于预设的阈值时，利用所述当前量子信道进行量子直接通信。根据本申请的示例实施例，通过对量子直接通信系统的量子信道参数进行全局扫描，解决了量子信道在初始化阶段存在的同步和量子态光脉冲信号相位精确控制制备问题。

一种基于多通道延迟反馈的窄线宽半导体激光器及其实现方法

Absstract of: CN122418426A

本发明涉及半导体激光器与光子集成电路领域，尤其涉及一种基于多通道延迟反馈的窄线宽半导体激光器及其实现方法。该激光器通过在主激光腔外引入多个具有不同往返时延的反馈光路，在时域上构造多周期延迟反馈网络，使外腔反馈在频域中形成等效的高阶滤波与相位整形效应，从而显著增强激光器频率对腔长扰动的抑制能力，实现激光线宽的有效压窄。该结构无需超长单一外腔，即可获得等效于长外腔或高Q值谐振器的线宽压缩效果，具有结构紧凑、稳定性高、易于集成等优点，适用于高相干光通信、相干探测、光学传感及激光雷达等应用场景。

一种可重构星地量子纠缠分发网络及量子密钥分发方法

Absstract of: CN122419748A

本发明涉及一种可重构星地量子纠缠分发网络及量子密钥分发方法，涉及量子通信技术领域。其通过锁模脉冲激光泵浦非线性晶体生成偏振纠缠光子对并完成时频编码模块与探测器模块的初始化配置；卫星过境时将网络切换为多点到点星地拓扑，对信号光进行时频编码后上行至卫星，闲频光经频分复用分配至地面节点进行符合探测，并基于死时间修正与二元熵函数推导星地安全密钥速率；卫星离场时触发光开关切换为点对点全连接地面拓扑，经光纤重路由与纯频分复用计算地面安全密钥速率；最终基于卫星轨道监测信号对多个量子城域网进行拓扑模式动态切换调度以实现全局最优密钥分发。本发明有效提升了星地量子通信网络的资源利用率与整体密钥吞吐量。

基于量子熵源的抗篡改密码服务方法及系统

Absstract of: CN122416573A

本发明涉及安全随机数生成与抗篡改技术技术领域，具体为一种基于量子熵源的抗篡改密码服务方法及系统，应用于时间登记器、彩票开奖设备、电子投票设备或高精度核算装置中，所述方法包括以下步骤：通过部署在设备内部的多维传感器实时采集环境物理参数，所述环境物理参数至少包括温度、振动幅度、光照强度及电磁场强度。该基于量子熵源的抗篡改密码服务方法及系统，通过多维传感器实时采集温度、振动、光照及电磁场等环境参数，动态调整量子熵源的工作点，克服了环境漂移对随机数质量的影响，确保了在时间登记器、彩票机等设备长期运行中的输出稳定性，采用混合熵池动态加权机制，根据实时香农熵率和误码率自动平衡真随机数与伪随机数的比例。

基于光子量子链路质量预测的密钥分发调度方法及系统

Absstract of: CN122419761A

本申请涉及基于光子量子链路质量预测的密钥分发调度方法及系统，涉及量子通信网络资源调度技术领域。该方法包括：获取光子量子链路的实时质量监测数据集与待调度密钥分发任务的属性信息集；根据实时质量监测数据进行脆弱期识别与时间窗口结构化划分，生成链路脆弱期结构化信息集；根据此，进行基于任务优先级的任务与可行时间窗口匹配计算，生成优先匹配任务‑窗口分配方案集；根据此，进行基于决策优先级的主动推迟开始或主动暂停等待决策，生成增强型调度决策集。本申请可以将任务精准嵌入预测的安全时间窗口，避免任务因链路质量恶化而中断，提高密钥生成效率与系统吞吐量。

一种LLO-CV-QKD盲相位补偿方法、装置、设备及介质

Absstract of: CN122419628A

本发明涉及量子保密通信技术领域，公开了一种LLO‑CV‑QKD盲相位补偿方法、装置、设备及介质。该方法对接收端量子信号正交分量进行采样，对接收复信号执行自然对数变换以分离幅值分量和相位分量，并结合对应 M 值的 M 次幂运算获得总相位噪声观测量。随后通过块平均、差分、局部平均滤波、累计恢复和卡尔曼滤波输出最优相位估计值并实施相位旋转补偿。该方案无需新增导频链路即可提高低信噪比条件下的盲相位估计精度、离散调制协议适配能力、传输稳定性和安全传输距离。

密钥调度方法、装置、电子设备和可读存储介质

Absstract of: CN122419749A

本申请公开了一种密钥调度方法、装置、电子设备和可读存储介质，属于量子通信领域，包括：获取量子网络中各个节点的历史密钥消耗数据，以及，所述量子网络的网络信息；对各个历史密钥消耗数据进行处理，得到处理后的历史密钥消耗数据，并基于所述网络信息构建当前空间传导矩阵；将各个处理后的历史密钥消耗数据和所述当前空间传导矩阵输入当前预测模型，输出各个节点对应的预测结果；基于各个预测结果对各个节点进行密钥调度。本申请提高了预测精度，实现了密钥在节点间的高效流转，提升了量子网络的整体吞吐量。

QUANTUM DATA COMMUNICATION NETWORKS, HUBS AND CLIENT DEVICES

Absstract of: US20260203628A1

0000 Methods and apparatus for communicating information among client devices involve encoding information in photon states at client devices, sending the photon states to a hub device, loading the photon states into quantum systems of the hub device and comparing the loaded photon states, e.g. by a parity measurement. The hub may provide quantum entanglement that may be consumed in making parity measurements. Applications include quantum key distribution.

AUTHENTICATION METHOD USING PRE-SHARED SYMMETRIC KEY FOR LOCATION SELECTION OF AUTHENTICATION INFORMATION IN QUANTUM COMMUNICATION SYSTEM, AND APPARATUS THEREFOR

Absstract of: US20260205207A1

The present disclosure provides a method of performing user authentication in a quantum communication system. More specifically, the method includes transmitting an information sequence including at least one data block on the quantum channel, wherein based on a preshared key and at least one key generated based on the preshared key, a checking sequence for a quantum bit error rate (QBER) estimation is determined from each of the at least one data block, wherein the preshared key is used to select a location of a sequence included in the at least one data block; performing the user authentication based on a portion of the checking sequence; and performing a QBER estimation based on a result of the user authentication and a remaining checking sequence excluding the portion of the checking sequence. A user authentication error rate and a QBER estimation error rate are used for the QBER estimation.

OPTICAL POWER LIMITER

Absstract of: US20260202693A1

An optical power limiter, a method of fabricating an optical power limiter, an optical device or system comprising an optical power limiter, and a method of limiting optical power using on optical power limiter. The optical power limiter comprises a first optical mode altering element configured to receive an input optical signal from a first waveguide; and an active medium coupled to the first optical mode altering element at a first end of the active medium such that a mode altered optical signal based on the input optical signal can enter the active medium, wherein a second end of the active medium is configured to couple the mode altered optical signal into a second waveguide as an optical output signal; wherein the active medium has a thermo-optic coefficient such that the mode altered optical signal entering the active medium experiences a refractive index gradient in the active medium as a result of absorption; and wherein the power of the optical output signal coupled into the second waveguide is limited to a maximum power value based on mode overlap of the mode altered optical signal and the second waveguide.

Verfahren und System zur Simulation von Quantenkommunikationsvorgängen

Absstract of: DE102025101067A1

Die vorliegende Offenbarung betrifft ein Verfahren und ein System zur Simulation eines Quantenkommunikationsvorgangs. Das Verfahren weist folgende Schritte auf: Bereitstellen, in einer Datenverarbeitungseinheit (10), von Quantenkommunikationsinformationen für mindestens einen zu simulierenden Quantenkommunikationsvorgang zwischen mindestens einer ersten Quantenkommunikationsvorrichtung (30), einer zweiten Quantenkommunikationsvorrichtung (31) und einer Abhörvorrichtung (33) über mindestens einen Quantenkanal (32); Bestimmen, in der Datenverarbeitungseinheit (10) und aus den Quantenkommunikationsinformationen, von Steuerungsdaten für einen Quantenprozessor (14), in dem Quantenoperationen auf Quantenteilchen angewendet werden, die Ionen oder neutrale Atome sind und die innerhalb mehrerer Operationsbereiche (21) räumlich kontrollierbar sind; und Simulieren des Quantenkommunikationsvorgangs in dem Quantenprozessor (14) mittels der Steuerungsdaten. Hierbei ist einem Quantenbit des Quantenkommunikationsvorgangs jeweils eines der Quantenteilchen zugeordnet. Kommunikationsoperationen des Quantenkommunikationsvorgangs entsprechen jeweils mindestens einer der Quantenoperationen, wobei die Quantenoperationen mindestens eine erste Quantenoperation für die erste Quantenkommunikationsvorrichtung (30), mindestens eine zweite Quantenoperation für die zweite Quantenkommunikationsvorrichtung (31) und mindestens eine dritte Quantenoperation für die Abhörvorrichtung (33) umfassen. Des W

QUANTUM PROCESSOR CHIP AND MULTI-LAYER PHOTONIC ROUTING NETWORK

Absstract of: WO2026152033A1

A quantum processor chip is disclosed including a multi-layer photonic routing network. In one example, quantum node cores are arranged in slanted columns, and the arrangement may be derived at least in part from projecting a three-dimensional dual helix arrangement into two dimensions. The multi-layer photonic routing network provides different node-to-node connections on each layer, thereby enhancing the overall number of node-to-node connections while minimizing waveguide crossings and reducing cross talk. Disclosed embodiments employ vertical optical couplers and programmable photonic routers to flexibly route photonic signals between nodes. In some embodiments, integrated entanglement and qudit hardware regions may be provided. The architecture supports dynamic fallback routing, scalable control, and is compatible with various quantum technologies, enabling robust, high-fidelity quantum information processing within a compact footprint.

QUANTUM KEY DISTRIBUTION SYSTEM AND METHOD

Absstract of: WO2026149671A1

A continuous-variable Quantum Key Distribution system is provided, comprising a transmitter and a receiver. The receiver comprises a detection part and a lossy optical element arranged between the transmitter and the detection part. The transmitter modulates a quantum signal and sends it to the receiver through a quantum channel. The lossy optical element is configured to: distribute N input modulated quantum signals into M output modulated quantum signals, with N, M ≥ 1, wherein one of the N input signals is associated to the transmitter and the other N-1 signals are vacuum signals; and provide to the detection part one of the M output modulated quantum signals. The receiver detects, with the detection part, one or more quadrature components of the one modulated quantum signal, and performs a post-processing procedure with the transmitter based on the detected quadrature component(s) and an amount of optical loss of the lossy optical element.

ENTANGLEMENT APPARATUS WITH REFLECTORS ON A QUANTUM DEVICE

Absstract of: WO2025230561A2

Example embodiments provide methods, systems, apparatuses, products and/or the like for reflecting, collecting, entangling, and/or detecting photons generated by quantum objects. In various embodiments a quantum entanglement apparatus is provided. The quantum entanglement apparatus comprising a first reflecting component on a first surface of a first quantum object confinement component, the first reflecting component configured to reflect a first emitted photon emitted by a first quantum object, a first photonic integrated circuit on a first side of the first quantum object confinement component, a first collection component optically coupled to the first photonic integrated circuit, wherein the first collection component is configured to collect the first emitted photon reflected by the first reflecting component, a first detector configured to detect photons traversing a first optical path of the first photonic integrated circuit, and a first filter along the first optical path.

ＢＢ８４プロトコル偏光状態をエンコードし補正するためのシステムおよび方法

Absstract of: WO2025012492A1

The invention relates to a system for encoding and correcting BB84 protocol polarisation states, which implements a method for measuring the polarisation error by carrying out said measurement before a step of transmitting the information and can be used in any system in which it is desired to implement quantum key distribution (QKD).

A system and a method for satellite relayed quantum communication

Absstract of: GB2645040A

A satellite relayed quantum communication system comprises a network of one or more chains of near-synchronously moving satellites, equipped with a telescope module that effectively creates a satellite lens. The lens, comprising multiple mirrors, focuses light to contain beam divergence and directs it to the next satellite or to a receiving station, transmitting quantum information across variable distances. A tracking module ensures accurate signal transmission although tracking needs would be minimal within a particular satellite chain due to near-synchronously moving satellites. The system optimizes the relationship between lens diameter, satellite separation, and wavelength of light to minimize diffraction loss. High reflectivity Bragg mirrors minimize reflection loss, and the lens can be constructed using various telescope configurations. Beacon lasers aid in tracking.The system can be adapted for deep space communication. Additional features include positioning quantum light sources and light collection units differently for different protocols for diverse protocols, quantum memories for enhanced efficiency and capabilities, and frequency multiplexing modules for increased quantum information transfer rates.

一种抗高功率拉曼噪声的自适应波分复用系统及方法

Absstract of: CN122394676A

本发明属于量子领域，公开了一种抗高功率拉曼噪声的自适应波分复用系统及方法，系统包括发送端和测量端；发送端生成量子信号脉冲，并与高功率经典数据信号合波后通过单模光纤传输，且响应于调节指令自适应调整诱骗态脉冲的发送概率与光子数分布比例；测量端用于：将经典信号与量子信号解复用分离；监测经典光激发的反向拉曼散射及瑞利散射背景，并动态计算单门背景噪声计数概率；对量子信号进行双光场单光子干涉探测，调整判决逻辑边界，提取单光子干涉事件与双光子符合事件，剔除受拉曼噪声污染的误码事件，并提取有效信号光强；对观测总增益和观测误码率进行置信区间估计，计算最终安全密钥率，并在安全密钥率下降时生成调节指令。

量子光的偏振态调整方法、装置及量子通信卫星

Absstract of: CN122394768A

本申请涉及量子通信技术领域，公开了一种量子光的偏振态调整方法、装置及量子通信卫星，量子通信卫星测量发射的量子光的偏振态，量子光由量子通信卫星中的光源产生并发射，确定量子光的偏振态相对于量子光的预设偏振状态的变化矢量，根据变化矢量，调整光源产生并发射的量子光的偏振态；量子通信卫星利用量子光作为偏振补偿的基矢光信号，光源在发射量子光时考虑了偏振态发生的改变，使发出的量子光的偏振态始终保持在预设偏振状态，实现量子光高偏振对比度、降低量子光的偏振误码率，不需额外硬件设备，节省硬件成本，通过量子通信卫星就可实现偏振态补偿，降低地面站工作人员的工作量，提高地面站工作人员的体验感。

一种公路交通流量监测方法及系统

Absstract of: CN122392305A

本发明公开了一种公路交通流量监测方法及系统，涉及智能交通监测技术领域。本发明通过部署量子纠缠态传感器网络，利用探测粒子穿越路网空间并与车辆运动激发的微弱电磁扰动耦合，计算贝尔参数序列并提取有效退相干事件，进而映射得到交通流量时间序列；通过延迟嵌入定理进行相空间重构，结合持久同调理论追踪单纯形复合体演化的拓扑特征，生成动态图网络结构；利用时空图卷积网络与量子启发式模拟退火算法越过局部能量壁垒，输出路网结构性突变的概率图数据；最终基于预测结果闭环调节传感器网络感知参数。本发明彻底突破了传统检测盲区，提前识别潜在涡流死锁，实现了全天候的交通前兆感知与动态自适应资源调度。

光电共封装光子收发器件、制备方法及光电共封装交换机

Absstract of: CN122386487A

本申请公开了一种光电共封装光子收发器件、制备方法及光电共封装交换机，器件包括：光电混合玻璃基板，集成有基板边缘波导、片上波导和光复用/解复用器，光复用/解复用器分别与片上波导和基板边缘波导连接；硅光 PIC 芯片，集成有芯片边缘波导、多个光调制器以及多个光探测器，芯片边缘波导分别与光调制器和光探测器连接，且芯片边缘波导与片上波导通过倏逝波耦合实现光路连接；光复用/解复用器用于将经单根光纤输入的多波长光源解复用为多路单波长光，传输至光调制器调制为高速光信号后，再合波输出；以及同时用于将输入的多波长光信号解复用为多路单波长光，传输至光探测器转换为电流信号。本申请能够提高光电共封装光子收发器件的带宽密度。

密钥接收端、量子密钥分发系统和量子密钥分发方法

Absstract of: CN122394772A

本申请提供了一种密钥接收端、量子密钥分发系统和量子密钥分发方法，该接收端包括调制泵浦源，用于生成双脉冲泵浦光序列；频率上转换源，用于基于双脉冲泵浦光序列对接收到的时间编码的量子态的量子光信号进行和频，以在前后两个时间窗口上产生偏振相互正交的量子态，从而得到两个时间窗口上的相对相位发生变化的和频光序列；测量模块，用于对和频光序列进行测量，得到测量结果，并根据测量结果生成量子密钥。

一种可调焦距透镜阵列与Micro-LED阵列耦合系统

Absstract of: CN122362603A

本发明涉及透镜耦合领域，具体的说是指一种可调焦距透镜阵列与Micro‑LED阵列耦合系统，包括透镜阵列层及设置在透镜阵列层一侧表面的驱动模块阵列层，所述驱动模块阵列层的一侧表面设置有散热缓冲复合层，所述散热缓冲复合层的一侧表面设置有Micro‑LED阵列，所述透镜阵列层、驱动模块阵列层、散热缓冲复合层和Micro‑LED阵列之间填充有透明胶水；所述透镜阵列层包括多个透镜单元。定位连接在底层Micro‑LED阵列基板与第二层散热缓冲复合层，可以通过导热绝缘粘接层全贴合固定，复合层中的避让孔与Micro‑LED发射单元采用同轴定位工艺，定位精度±0.5μm，确保光轴同轴，而第二层散热缓冲复合层与第三层驱动模块阵列层，通过微型定位销机械定位+导电胶粘接固定。

一种基于压电扫描台的小型机载光通信系统

Absstract of: CN122372080A

本发明公开了一种基于压电扫描台的小型机载光通信系统，包括粗跟模块、精跟模块和信号收发模块；通信发射端的多模激光器发射粗信标光，经发射透镜的准直后出射，在自由空间中传播一段距离后照射到对面接收望远镜的粗跟模块中，接收望远镜中的粗跟接收镜头将粗信标光聚焦到粗跟相机靶面中，接着根据聚焦光斑的位置误差信号来调整云台的指向角，完成通信双方的初始捕获和对准。本发明小型轻量化，整个系统的重量控制在1 kg左右，高跟瞄精度，精信标回路中的相机能分辨出高达4.7 µrad的光线视场角变化；低链路损耗，能够精准调节单模光纤的位置，使得耦合效率最高，同时系统中的所有镜片都镀了响应波长的增透膜，提高了系统本身的透过率。

宽带相位匹配控制方法、系统、设备及存储介质

Absstract of: CN122372102A

本发明实施例提供一种宽带相位匹配控制方法、系统、设备及存储介质，属于集成光子学技术领域。所述方法包括：获取色散参数和泵浦参数，计算对应各频率点的相位失配参数；计算对应各频率点的最优非线性作用长度，并构建频率与最优非线性作用长度之间的映射关系；构建空间作用长度调度函数，并将空间作用长度调度函数转换为对应非线性作用过程的控制参数分布，以对非线性波导中的非线性作用过程进行调度控制；在执行调度控制过程中，获取对应各频率通道的输出参数，并对空间作用长度调度函数进行更新，以输出多频通道输出结果。本发明方案在宽带条件下实现多频通道非线性作用过程的自适应调度控制，从而提升各频率通道输出的一致性与稳定性。

一种量子网络拥塞感知动态纠缠纯化提升吞吐量方法

Absstract of: CN122372487A

本发明公开了一种量子网络拥塞感知动态纠缠纯化提升吞吐量方法，属于量子网络通信技术领域。本方法包括：构建包含节点数、链路数及节点交换成功率的量子网络模型，初始化网络全局变量与网络参数；生成不同节点对之间的通信请求并设置保真度阈值；基于加权优先级公式综合路径长度与纠缠交换成功率选择低成本纠缠路径；通过保真度逐跳退化特性确定纯化位置，利用概率纯化特性确定纯化次数，并引入链路拥塞因子动态调整纯化策略以缓解网络拥塞。本发明有效降低了建立不相邻节点间纠缠的时间与资源成本，显著提高了满足保真度要求的网络吞吐量，实现了纠缠资源的高效利用与多并发请求的良好支持。

量子通信方法和装置

Absstract of: CN122372988A

本申请实施例提供一种量子通信方法和装置。该方法包括：通过第一终端部署的量子随机数生成组件生成第一量子随机数，并接收来自第二终端的第一数值，即可根据第一数值与第一量子随机数确定加密密钥，并根据加密密钥对待传输至第二终端的通信数据进行加密处理，生成加密数据，其中，第一数值是基于第二终端上部署的量子随机数生成组件生成的第二量子随机数确定的，加密数据用于传输至第二终端解密，以使第二终端获取通信数据。该方法能够提升量子通信过程安全性。

一种基于步长自适应符号恒模算法的数字信号偏振恢复方法

Absstract of: CN122372189A

本发明属于连续变量量子密钥分发技术领域，具体涉及一种基于步长自适应符号恒模算法的数字信号偏振恢复方法。针对现有偏振恢复算法在计算复杂度与收敛性能之间难以平衡的问题，本发明通过引入一种由线性项与二次项加权构成的误差调控步长更新策略、基于符号信息的系数更新方法以及基于接收信号总功率的归一化误差函数，在提升收敛速度与稳态性能的同时降低了计算复杂度，实现了高性能、低复杂度的实时偏振恢复。

一种基于量子压缩感知的认知无线电频谱感知装置及方法

Absstract of: CN122372119A

本发明公开了一种基于量子压缩感知的认知无线电频谱感知装置及方法，属于认知无线电技术领域。针对现有技术中存在的问题，通过设计一种基于量子压缩感知的认知无线电频谱感知装置，所述装置包括宽带天线模块、电光调制微波光子转换模块、数据采集模块和认知无线电信号检测算法模块，各模块依次连接，共同完成从信号接收到频谱分析的全过程；本发明利用量子压缩感知实现亚奈奎斯特采样和高压缩率的宽带多频率微波信号频谱测量，同时实现当光子计数率提升至2 Mcps、积分时间40 ms时，检测概率逼近100%，为认知无线电频谱感知、决策和切换提供了一种新的策略。

基于被动偏振编码的BB84量子密钥分发系统及方法

Absstract of: CN122372203A

本发明涉及量子密钥分发，具体涉及基于被动偏振编码的BB84量子密钥分发系统及方法，包括发送端Alice、接收端Bob和量子信道，发送端Alice包括被动编码发射机，被动编码发射机包括预报单光子源模块和全被动偏振编码模块；预报单光子源模块，产生信号‑闲置单光子对，信号光子由单光子探测器探测，其探测事件作为整个系统的预报时间基准，闲置光子进入全被动偏振编码模块；全被动偏振编码模块，将闲置光子随机分配至相应光路，并在光路内映射为BB84的四种偏振态中的一种，同时使得每种偏振态对应一个固定时间延迟，形成时间延迟标签；本发明提供的技术方案能够有效克服现有技术所存在的难以兼顾完全被动、高安全性、低系统复杂度和工程实用化的缺陷。

PHOTONIC COMMUNICATION PLATFORM AND RELATED ARCHITECTURES, SYSTEMS AND METHODS

Absstract of: US20260197092A1

0000 Photonic interposers that enable low-power, high-bandwidth inter-chip (e.g., board-level and/or rack-level) as well as intra-chip communication are described. Described herein are techniques, architectures and processes that improve upon the performance of conventional computers. Some embodiments provide photonic interposers that use photonic tiles, where each tile includes programmable photonic circuits that can be programmed based on the needs of a particular computer architecture. Some tiles are instantiations of a common template tile that are stitched together in a 1D or a 2D arrangement. Some embodiments described herein provide a programmable physical network designed to connect pairs of tiles together with photonic links.

APPARATUS AND METHOD FOR PERFORMING ENTANGLEMENT PERCOLATION-BASED ENTANGLEMENT ROUTING STRATEGY USING LOCAL INFORMATION IN QUANTUM COMMUNICATION SYSTEM

Absstract of: WO2026146666A1

The present disclosure relates to an apparatus and method for performing an entanglement percolation-based entanglement routing strategy using local information in a quantum communication system. Specifically, the present disclosure relates to an apparatus and method in which each intermediate node involved in distributing remote entanglement between any two distant transmitting and receiving nodes on the basis of entanglement percolation in a quantum communication system determines a local operation and classical communication (LOCC) strategy thereof on the basis of local information. The present disclosure relates to an apparatus and method for determining an operation mode of a specific node as one of a repeater mode, a vertex mode, or a hybrid mode using only information between the specific node and neighboring nodes, and performing entanglement routing on the basis of an LOCC strategy corresponding to each mode.

APPARATUS AND METHOD FOR PERFORMING ENTANGLEMENT DISTILLATION PROTOCOL IN ENTANGLEMENT DISTILLATION PROTOCOL MODE DETERMINED ON BASIS OF YIELD OF ENTANGLEMENT DISTILLATION PROTOCOL IN QUANTUM COMMUNICATION SYSTEM

Absstract of: WO2026146687A1

According to various embodiments of the present disclosure, a method performed by a first node is provided, the method comprising the steps of: transmitting, to a second node, information related to initial fidelity and target fidelity of an Einstein-Podolsky-Rosen (EPR) pair, the number of rounds in which an entanglement distillation protocol (EDP) is performed, and an EDP type; transmitting, to the second node, information related to the entanglement state of the EPR pair; determining an optimal EDP mode for optimal EPR yield; transmitting, to the second node, information about the optimal EDP mode for the optimal EPR yield; and performing the EDP on the basis of the optimal EDP mode.

FASTER-THAN-LIGHT COMMUNICATION METHOD

Absstract of: WO2026146581A1

Problem To achieve a communication method that makes it possible for communication speed to exceed the speed of light. Solution A plurality of quantum particles having quantum entanglement are disposed such that one or more quantum particles are disposed on each of a transmission side and a reception side and the quantum entanglement is present at least between the transmission side and the reception side. When information is transmitted, the quantum entanglement is changed by an operation for changing the identifiability of a quantum state on the transmission side. When the information is not transmitted, the operation is performed on the transmission side such that the quantum entanglement becomes different from that when the information is transmitted (the operation includes doing nothing since it is only necessary that the quantum entanglement is different from that when the information is transmitted). Measurement is performed on the reception side after the operation on the transmission side, and information for detecting the transmission of the information from the transmission side is obtained. In this way, a communication speed exceeding the speed of light can be achieved.

ENHANCING SECURITY OF QUANTUM COMMUNICATION CHANNELS

Absstract of: US20260197345A1

0000 Methods, apparatus, and computer program products for quantum communications and quantum information processing are provided. An example method includes determining a received state of a qubit received via a quantum communication link where the received state includes one or more properties of the received qubit. The method further accesses a transmitted state of the qubit where the transmitted state includes one or more properties of the qubit as transmitted. The method continues by comparing the one or more properties of the qubit in the received state with the one or more properties of the qubit in the transmitted state. Finally, the method detects a condition of the quantum communication link based on the comparison between the received state and the transmitted state. In doing so, the embodiments operate to characterize the noise level, security, etc. of a quantum communication interconnect, link, or channel.

SYSTEMS AND METHODS FOR ROUTING SINGLE PHOTONS FROM A TRAPPED ION USING A PHOTONIC INTEGRATED CIRCUIT

Absstract of: US20260194784A1

0000 A system includes a quantum source and an optical device coupled to the quantum source. The quantum source is configured to emit an entangled photon. The optical device is configured to route the entangled photon to one or more outputs. In some aspects, the optical device can include a photonic integrated circuit (PIC). Advantageously the system can provide a routing scheme to route (e.g., passively, actively, dynamically, or a combination thereof) entangled photons from one or more quantum sources (e.g., trapped ion, single-photon source, quantum emitter, etc.) between different nodes, a quantum frequency conversion scheme to match near-infrared photons (750 nm to 1260 nm) and/or telecommunication photons (1260 nm to 1675 nm) entangled with photons from one or more quantum sources to an operating wavelength of the optical device (e.g., PIC), programmable routing and entanglement distribution, and scalable long-distance quantum networks.

QKD DEVICE, QKD SYSTEM, QKD CONTROL METHOD, AND COMPUTER-READABLE MEDIUM

Absstract of: EP4773543A1

According to an arrangement, a QKD device (2) includes a detection unit (21), a monitoring unit (24), and a switching control unit (25). The detection unit (21) is configured to detect a quantum signal by photons transmitted from a transmitting quantum key distribution (QKD) device. The monitoring unit (24) is configured to monitor monitoring information including a parameter based on the quantum signal. The switching control unit (25) is configured to transmit, to the transmitting QKD device (1), a switching signal for switching from a normal mode to a debug mode for enhancing intensity of the quantum signal by a predetermined value, based on the monitoring information.

一种连续变量的量子密钥分发系统参数估计方法及系统

Absstract of: CN122348821A

本发明涉及量子通信传输技术领域，公开了一种连续变量量子密钥分发系统参数估计方法及系统，其中，方法包括：获取原始数据缓冲池中的原始数据；采用索引抽样方法输出抽样数据；采用消息鉴别码校验方法输出鉴别通过的复用抽样数据；采用分组相位搜索方法输出分组相位估计值；采用分段线性插值补偿方法输出相位补偿数据；进行信道参数估计和安全码率判定。由于本申请通过复用相位补偿过程和参数估计过程的公开信息，并对网络交互数据进行消息鉴别，实现了在保证参数计算精度的同时提高原始数据利用率和成码率，并保证连续变量量子密钥分发系统的准确性和安全性。

一种基于原子-光子纠缠的量子隐形传态方法

Absstract of: CN122339670A

本发明公开了一种基于原子‑光子纠缠的量子隐形传态方法：步骤1：Alice和Bob制备不同初始状态的原子序列。步骤2：Alice生成参考光脉冲与信号光脉冲，经时分复用在信道中传输。步骤3：Alice操纵信号光脉冲与原子相互作用产生纠缠态，经量子信道传输后相干光与Bob的原子建立纠缠，以此完成三粒子纠缠。步骤4：Alice将原子序列划分，Bob进行信道安全性检测。步骤5：信道安全后，Alice将秘密信息编码于信息序列原子上并公布测量结果。步骤6：Alice对携带信息的原子序列做Hadamard门操作。步骤7：Bob解调出秘密信息。本发明充分利用长退相干时间的原子‑光子纠缠资源，满足高信道容量、高链路效率的通信需求，为构建大规模、抗损耗的量子互联网提供了可行途径。

一种空间操作系统多源信号光子语义映射协议及系统

Absstract of: CN122339580A

本发明提供了一种空间操作系统多源信号光子语义映射协议及系统，涉及空间计算、混合现实、空间互联网、硅基光子学及全光传输领域。该系统将面向空间操作系统的空间数据统一组织为专用复合空间数据结构，并构建协议对象；通过光子语义映射形成对象化光子执行簇；通过主相干源分发相位基准波，并结合硬件对齐实现跨源物理层对齐；通过确定性调度实现路径控制和优先执行；通过安全执行与熔断实现审计、物理熔断、降级执行及黑箱留痕。所述空间数据可来源于电域输入、射频域输入、量子域输入或其组合。该系统可提高空间显示、空间交互、空间控制及空间安全处理中的一致性、稳定性和抗规避能力。

基于定向光通信的近场数据防窃听传输方法及系统

Absstract of: CN122339583A

本发明涉及光通信技术领域，尤其涉及基于定向光通信的近场数据防窃听传输方法及系统，该方法通过构建非正交基底张量网络，将保密信息对应的量子态进行分布式纠缠与投影，生成具有拓扑保护的量子态表示。随后将其与定向光场耦合调制，利用轨道角动量和偏振控制，使量子相干性仅限特定方向。传输后，接收端通过方向匹配解调与联合测量进行重构。通过实时监测信道噪声与散射，动态调整网络拓扑与纠缠权重，将噪声分量重定向至散射路径。本发明实现了信息仅在预设方向上的可靠传输，有效增强了近场数据传输的防窃听能力。

一种配电网台区量子时频同步方法及系统

Absstract of: CN122339612A

本发明适用于智能电网技术领域，涉及一种配电网台区量子时频同步方法及系统，包括：部署台区主基准单元于配电变压器侧，用于产生高精度基准时间信号并向台区内分发纠缠光子对；部署多个从节点同步单元于各智能终端设备，用于接收纠缠光子对并记录光子到达时间；通过符合计数原理计算各从节点与主基准单元之间的实时量子钟差；根据量子钟差，通过自适应反馈控制模块驯服本地CPT原子钟，实现与主基准单元的时间同步；实时监测台区通信网络状态，根据网络状态自动切换闭环控制模式或开环保持模式。本发明实现了配电网台区去公网化的高可靠性和高准确性同步，具备抗欺骗攻击能力，为配网设备提供了安全、精准的时间基准。

基于量子干涉的异地多节点网络信号同步装置

Absstract of: CN122339604A

本申请公开了一种基于量子干涉的异地多节点网络信号同步装置，包括：部署在每个节点本地的光频梳生成模块、滤波处理模块和调节模块，以及部署在节点外部的干涉模块；进行信号同步的任意两个节点的光频梳生成模块，分别用于在节点本地生成独立的光频梳，其中，光频梳通过锁定泵浦激光频率与光频梳重复频率实现频率对准；滤波处理模块，用于从各自的光频梳中滤出为任意两个节点分配的同频梳齿；干涉模块，用于将任意两个节点的同频梳齿进行合束干涉，并将任意两个节点光信号间的相对时间偏差发送给任意两个节点中目标节点的调节模块；调节模块，用于根据相对时间偏差进行调节。本申请解决星型网络架构存在的单点故障以及网络拓扑灵活性较差的问题。

一种基于多模通信配电网台区量子时频同步方法及系统

Absstract of: CN122339615A

本发明适用于智能电网技术领域，涉及一种基于多模通信配电网台区量子时频同步方法及系统，提出“主基准量子同步+集中器量子守时+终端设备多模信道广播同步”的三级架构：主基准单元通过量子纠缠与台区集中器实现纳秒级同步；台区集中器内置CPT原子钟，在公网中断时自主守时；台区集中器通过通信网络广播同步信标帧，终端设备结合信道延迟补偿实现微秒级同步。本发明通过台区集中器双机冗余、信道延迟动态校正、终端设备自主守时等机制，确保同步可靠性和准确性，利用现有通信网络基础设施，支持百万级电表规模化部署，为台区拓扑识别、线损分析等应用提供高精度时间基准。

一种基于二维单光子态的多方半量子秘密大小比较方法

Absstract of: CN122339693A

本发明公开了一种基于二维单光子态的多方半量子秘密大小比较方法，首先，各参与方共享密钥并加密各自秘密，保持数值大小关系不变；半诚实量子第三方STP随机用Z基或X基制备二维单光子序列分发给各参与方；参与方根据加密位值对每对相邻光子执行相应操作后发回STP；STP接收发回的光子，解码得到加密数据串；经安全检测后，STP对各数据串逐位执行异或运算，判定多方秘密的大小关系。本发明采用实验易制备操控的二维单光子态替代高维态或纠缠态，仅需标准光学器件，显著降低实现难度；结合加法加密与异或比较规则，在保护隐私的同时实现大小比较，解决了现有方法物理实现困难、安全性下降的问题，具有经济、高效、可落地的技术效果。

一种集成量子随机数发生器芯片

Absstract of: CN122339695A

本发明涉及光通信和量子密钥分发技术领域，公开了一种集成量子随机数发生器芯片，包括集成光芯片和电子学处理模块，集成光芯片与电子学处理模块集成封装，所述集成光芯片包括超辐射二极管、光路转换模块、激光二极管、非对称马赫‑曾德尔干涉仪和光电探测模块，各模块采用同一外延层或异质键合方式集成于同一光芯片；电子学处理模块包括放大模块、信号采集模块、后处理模块。与现有技术相比，本发明在高重复频率下，也能大幅降低LD脉冲间的相位关联度，确保相位在0~2π范围内均匀随机分布，解决了现有方案高速工作时随机性不足的核心缺陷；实现全系统集成封装，大幅减小器件体积、降低功耗，满足便携式、嵌入式量子安全设备的部署需求。

ROUTING PROTOCOL FOR AVOIDING SPACE DEBRIS IN COMMUNICATIONS

Absstract of: US20260189300A1

0000 Systems and techniques may generally be used for communication with a satellite. An example technique may include identifying a path from a first device to a second device, at least one of the first device or the second device being a satellite, determining a set of three or more celestial objects, wherein locations of the set of three or more celestial objects and a location of the first device define a field of view, and retrieving debris vector information corresponding to space debris that is projected to intersect a portion of the field of view over a specified time window. The example technique may include determining, within the specified time window, a sub-window where the field of view is clear from the space debris based on the debris vector information, and outputting an indication of the sub-window for sending a signal from the first device to the second device.

MULTI-WAY FUSION CIRCUITS FOR PHOTONIC QUBITS USING HADAMARD INTERFEROMETERS

Absstract of: WO2026143193A1

Multi-way fusion circuits using Hadamard interferometers can perform fusion operations on four or more input qubits, each of which may initially be part of a separately-entangled system of qubits. When the fusion operation succeeds, the four or more input qubits are consumed in a projective entangling measurement that also results in creating a single entangled system that includes the remaining qubits of the initial separately-entangled systems.

Circuit Apparatus for Calibrating Unequal-Arm Interferometer, and Quantum Communication Device

Absstract of: US20260189307A1

A circuit apparatus for calibrating an unequal-arm interferometer, and a quantum communication device are provided. The circuit apparatus includes: a constant-voltage power supply; a heater, provided on a short arm of the unequal-arm interferometer; and a diode, reversely connected between a positive electrode and a negative electrode of output ends of the constant-voltage power supply, and connected in series with the heater, wherein the diode provides a corresponding reverse saturation current to the heater according to a change in ambient temperature, so as to counteract an excess amount of an optical path change on a long arm of the unequal-arm interferometer under the effect of the change in the ambient temperature, relative to an optical path change on the short arm of the unequal-arm interferometer under the effect of the change in the ambient temperature.

MULTI-WAY FUSION CIRCUITS FOR PHOTONIC QUBITS

Absstract of: AU2024438646A1

Multi-way fusion circuits can perform fusion operations on three or more input qubits, each of which may initially be part of a separately-entangled system of qubits. When the fusion operation succeeds, the three or more input qubits are consumed in a projective entangling measurement that also results in creating a single entangled system that includes the remaining qubits of the initial separately-entangled systems.

SYSTEM AND METHOD FOR LONG-DISTANCE QUANTUM-CAPABLE INTERNET

Absstract of: AU2024440837A1

A Quantum-enabled Internet (QEI) including quantum-enabling networking architectures integrating advanced communication systems with long-distance quantum communication hardware and methods of operating the same. Using a quantum-network (QN) design paradigm, there is provided a physics-centric stack-based quantum network paradigm to govern the dynamics of multiple light-matter Hamiltonians across distant nodes. This QN network facilitates a fundamental long-distance quantum network service - that of high-visibility Hong-Ou-Mandel interference of telecom quantum states generated in two independent, telecom-compatible quantum light-matter interfaces separated by a distance. The QN paradigm design can be applied to demonstrate scalable long-distance QN services in an QN infrastructure, including the transmission of polarization entanglement created by high repetition sources of entangled photons and the storage of telecom polarization entanglement using remotely located quantum memories capable of heralding the storage of entanglement using non-demolition measurements and quantum state tomography.

PHOTONIC INTEGRATED CIRCUIT CHIP, OPTICAL INTERCONNECTION MODULE, OPTICAL INTERCONNECTION DEVICE, COMPUTING DEVICE, AND SYSTEM

Absstract of: WO2026138487A1

The present disclosure relates to a photonic integrated circuit chip, an optical interconnection module, an optical interconnection device, a computing device, and a system. A plurality of computing devices in the system are connected via optical fibers using optical interconnection devices, and external optical links are switched by controlling optical switching units in the optical interconnection devices, so that communication paths of the plurality of computing devices can be changed.

MICROWAVE-OPTICAL PHOTON INTERFACE APPARATUS AND METHOD

Absstract of: WO2025170628A1

Microwave-optical interface apparatus and methods are disclosed. In one example embodiment, a microwave-optical interface apparatus comprises: a microwave cavity operable to, at least, host at least one microwave signal photon; and an optical cavity comprising a plurality of embedded defects, the optical cavity operable to, at least, host at least one optical signal photon and at least one optical pump electric field, the optical cavity positioned relative to the microwave cavity to cause, using the plurality of embedded defects and induced by the at least one optical pump electric field, three-wave mixing magneto-optic transduction between the at least one microwave signal photon, the at least one optical signal photon and the at least one optical pump electric field within the optical cavity; wherein the at least one optical signal photon and the at least one optical pump electric field are evanescently confined within the optical cavity in at least two dimensions.

SINGLE-DETECTOR BELL-STATE MEASUREMENT DEVICE

Absstract of: EP4769978A1

A Bell state measurement device comprising first and second optical input fiber to respectively pass first and second photon comprising a first component and a second component, and a third component and a fourth component, an optical beam splitter configured to receive first and second photon respectively from first and second optical input fiber and to combine first and second photon into third and fourth photon; first and second optical output fiber to receive third and fourth photon, the second optical output fiber comprises a delay line; and a single-photon detector configured to receive third and fourth photon from first optical output fiber, or delayed third photon and delayed fourth photon from second optical output fiber, or third photon from first optical output fiber and delayed fourth photon from second optical output fiber, or fourth photon from first optical output fiber and delayed third photon from second optical output fiber.

一种自由空间量子密钥分发光学系统及方法

Absstract of: CN122316492A

本发明提供了一种自由空间量子密钥分发光学系统及方法，本发明光学望远镜采用透射式光学望远镜和简化的后光路终端，可以有效避免次镜遮拦和渐晕现象，光学望远镜系统轴向尺寸较小且同口径下重量相较卡式反射式望远镜更轻，更适合在短距离自由空间量子通信中规模化使用，能够做到单人携带和部署，具备全天时量子密钥分发能力。同时发射望远镜和接收望远镜两者之间可以互换使用，即系统既可以作为发射端，也可以作为接收端，可以将量子通信覆盖到光纤和卫星难以达到的区域，也可以满足各种紧急和突发状况下的快速调用。

一种通密一体量子共纤发送及接收装置、方法和传输系统

Absstract of: CN122316493A

本发明公开了一种通密一体量子共纤发送及接收装置、方法和传输系统，涉及光通信技术领域。该通密一体量子共纤发送装置包括量子信号合波单元和N‑1个经典信号合波单元。N‑1个经典信号合波单元中，首个经典信号合波单元将输入的任意两个不同波长的经典光信号合波后，输出至下个经典信号合波单元，并通过下个经典信号合波单元完成与又一波长的经典光信号的合波；直至末个经典信号合波单元完成与最后一波长的经典光信号的合波后，将合波后的经典光信号输出至量子信号合波单元；量子信号合波单元将输入的经典光信号与量子光信号进行合波后输出。本发明能实现兼容多波段光通信系统（如OTN系统）的量子共纤传输，满足实际应用需求。

集中式量子密钥中继方法、QKD网络控制器、中继节点及系统

Absstract of: CN122316614A

本发明公开了一种集中式量子密钥中继方法、QKD网络控制器、中继节点及系统，方法包括在本次用户请求密钥开始前，基于量子网络内各网络节点的密钥消耗需求生成密钥调度策略；根据所述密钥调度策略向相应的路径节点发送密钥异或信息请求，以使相应的所述路径节点按照所述密钥异或信息请求返回密钥异或信息，所述密钥异或信息携带上下行密钥异或值和密钥链路信息；根据所述密钥链路信息，将属于同一密钥链路上各路径节点上传的密钥异或值按序串联，并将串联成功的各组密钥异或值进行异或处理，得到链路异或结果并将所述链路异或结果发送至目的节点；本发明可显著减少密钥资源浪费及降低用户请求密钥延时，且尤其适用于复杂结构组网拓扑。

一种QKD系统相位反馈方法、装置及QKD系统

Absstract of: CN122316491A

本发明涉及量子通信技术领域，提供了一种QKD系统相位反馈方法，具体为：QKD系统发送端光源装置产生单一相位态光信号，经过衰减器调节至稳定光强后进入光纤信道，并输入到接收端；在接收端，通过不等臂M‑Z干涉仪对光脉冲进行干涉，将干涉后的光送给两路探测器D0和D1产生探测计数分别为X0和X1；采用出厂前已完成系统参数标定的反馈算法和反馈控制模块收集所述探测计数，根据相位反馈算法计算并下发控制电压对光纤移相器FPS进行控制调节，使得两路探测器计数比X0/X1，即对比度C，大于满足QKD系统成码要求的阈值。通过上述方法，提高了复杂环境下的主动相位补偿的速度和精度。

跨域集中式量子密钥中继方法、QKD网络控制器及系统

Absstract of: CN122316615A

本发明公开了一种跨域集中式量子密钥中继方法、QKD网络控制器及系统，方法包括向中继路径上各节点所属域的域内QKD网络控制器下发跨域密钥请求信息，以使相应的域内QKD网络控制器基于所述跨域密钥请求信息返回中转密钥异或值，所述中转密钥异或值为本域的中继密钥与域间中转密钥之间的异或值；接收各所述域内QKD网络控制器上传的所述中转密钥异或值，并对各所述中转密钥异或值进行异或运算，得到跨域密钥异或结果；将所述跨域密钥异或结果下发至目的域的域内QKD网络控制器，以使目的域的域内QKD网络控制器将所述跨域密钥异或结果下发至目的节点；本发明实现了跨域量子密钥集中式调度。

故障感知方法、QKD节点及故障感知系统

Absstract of: CN122316612A

本申请实施例公开了一种故障感知方法、QKD节点及故障感知系统，属于量子技术领域。在该方法中，QKDN中的第一QKD节点接收第一密钥中继报文，响应于第一QKD节点转发第一量子密钥出现故障，第一QKD节点向密钥分发源节点发送故障的故障描述信息。通过本申请实施例，在密钥分发源节点向密钥分发目的节点发送密钥中继报文后，对于该密钥中继报文的转发路径上的任一QKD节点，该QKD节点在接收到该密钥中继报文时，如果转发该密钥中继报文时出现故障，该QKD节点则向密钥分发源节点发送该故障的故障描述信息。从而使得密钥分发源节点在分发量子密钥后能够实时感知密钥分发过程中出现的故障。

量子鍵配送装置、量子鍵配送方法、及びプログラム

Absstract of: US20260172121A1

0000 A quantum key distribution device includes an optical modulator for modulating an optical signal and transmitting the modulated optical signal, and a controller unit for controlling the modulation. The controller controls, at a first timing, modulation of an optical signal in accordance with a first optical modulation rule in a first correspondence relationship including plural optical modulation rules each of which defines association between a first combination of a basis type and an signal state and a second combination of a value of a second bit corresponding to the basis type and a value of a first bit corresponding to the signal state, the plural optical modulation rules being different in association, and controls modulation of an optical signal in accordance with a second optical modulation rule different from the first optical modulation rule among the plural optical modulation rules of the first correspondence relationship at a second timing.

空間伝送光通信システムにおける光学調整方法および装置

Absstract of: US20260172109A1

0000 An optical communication device includes a focus-adjustable optical system that focuses guide light having the same optical axis as signal light onto its focus position, thereby illuminating the light receiving surface over a wide range including a light reception area as a target area. A predetermined pattern is provided around the light reception area. When part of the predetermined pattern is illuminated by the guide light, a controller recognizes a partial pattern of the predetermined pattern from the image captured by a camera. Based on the partial pattern, the controller adjusts the focus-adjustable optical system so that the partial pattern matches a predetermined part of the predetermined pattern, allowing the signal light to be accurately directed to the light reception area.

Delay time error measurement device based on fiber optic interferometer

Nº publicación: KR20260100044A 29/06/2026

Applicant:

주식회사이스트포토닉스