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一种双向环形量子信道多用户量子时间同步系统与方法

Resumen de: CN122969700A

本发明公开了一种双向环形量子信道多用户量子时间同步系统，包括基准站点、第一环形量子信道、第二环形量子信道和多个用户节点；本发明还公开了一种双向环形量子信道多用户量子时间同步方法，基于所述的一种双向环形量子信道多用户量子时间同步系统实现。本发明公开了一种双向环形量子信道多用户量子时间同步系统与方法，通过设置双环形量子信道进行时间同步，且各环形量子信道分别用于不同方向的信号传输，避免了两个方向的光信号对彼此的干扰，之后通过结合两个独立方向传输路径下的双时钟差实现更精准的同步修正，从而提高了时间同步的精度和稳定性，可应用于量子惯性导航与量子时间同步技术领域。

自适应纠缠光子对的相位噪声去除系统

Resumen de: CN122962837A

本发明公开一种自适应纠缠光子对的相位噪声去除系统，该系统包括：脉冲泵浦光源（01），非线性晶体（1），带阻滤波器（2），第一、第二、第三光分束器（61、62、63），光耦合透镜（4）、第一、第二、第三单光子探测器（51、52、53），第一、第二可调光衰减器（11、12），第一、第二可调电控光相移器（21、22），光合束器（6），光隔离器（7），第一、第二光偏振控制器（81、82），2Í2光耦合器（9），数字信号处理模块（10），第一、第二数模转换器（101、102），第一、第二电放大器（201、202）。本发明采用自适应反馈结构与控制算法，实现纠缠光子对相位噪声的有效去除，以加强纠缠光子对的稳定性和抗干扰性，更好地满足量子通信系统的应用需求。

量子中继系统和量子网络

Resumen de: CN122969677A

本申请提供了一种量子中继系统和量子网络，可以应用于量子信息技术领域。该量子中继系统包括第一量子纠缠建立装置、第二量子纠缠建立装置和量子纠缠交换装置；基于概率性地在不同时刻产生的光子对、在第一量子纠缠建立装置中进行单光子干涉，配合以时间空间多模复用方式存储第一单光子干涉的成功预报对应的第二光子，在第一节点和第二节点之间建立时间态纠缠；基于概率性地在不同时刻产生的光子对、在第二量子纠缠建立装置中进行单光子干涉，配合以时间空间多模复用方式存储第二单光子干涉的成功预报对应的第二光子，在第三节点和第四节点之间建立时间态纠缠；基于偏振编码的纠缠交换，实现较远距离的第一节点和第四节点之间的纠缠。

自旋-轨道微激光器、高维量子密钥分发系统和方法

Resumen de: CN122968784A

本发明公开了一种自旋‑轨道微激光器、高维量子密钥分发系统和方法，自旋‑轨道微激光器包括：半导体衬底；位于半导体衬底上的至少两个光学谐振腔；用于在光学谐振腔之间和/或之内引入可调非厄米耦合的耦合单元。本发明的自旋‑轨道微激光器，摒弃笨重的自由空间态制备组件和复杂的干涉仪网络，能够在芯片上直接产生N≥4维自旋‑轨道光子量子态，无需外部态调制器件，降低了系统复杂度；产生的所有量子态时空特性一致，降低了传输与探测误码率；通过可调非厄米耦合能实现量子态纳秒级快速切换，提升了密钥生成速率；将高维量子态发射机集成于微米级的芯片上，体积比自由空间系统缩小数个量级，为实现芯片化QKD终端和规模化生产奠定了基础。

METHOD FOR MODULATING THE POLARIZATION OF OPTICAL PULSES FOR GENERATING QUANTUM CRYPTOGRAPHIC KEYS, AND RELATED POLARIZATION MODULATOR

Resumen de: WO2026220321A1

A method for modulating the polarization of optical pulses, in particular for generating quantum cryptographic keys, guarantees an optimum stability of the output polarization states, and comprises the steps of : generating a plurality of optical pulses, routing them in a first fibre; separating the horizontal and vertical polarization modes and routing them in respective ends of a second polarization maintaining fibre, forming a ring, so that they travel such ring clockwise and counterclockwise, respectively; inserting a phase modulator inside such ring controlled by a pilot electrical pulse; recomposing the polarization modes in one single beam of optical pulses, and routing the resulting beam through said first polarization maintaining fibre, obtaining at the output a polarization state of the pulses which depends upon the shape of the pilot electrical pulse, wherein a co-propagating optical signal is exposed to a modulation only depending upon the superimposition to the pilot electrical pulse moving in its own direction, and wherein the counter-propagating optical signal is exposed to the whole pilot electrical pulse moving in opposite direction with an integration effect, so as to determine an asymmetry between the effect obtained on the co-propagating optical pulse with respect to the counter-propagating one to code different symbols, and so that said pilot electrical pulse determines different phase shifts to the two components which do not compensate each other.

Quantum Entanglement Communication Service

Resumen de: US20260332589A1

0000 A quantum entanglement communication service can be provided by detecting a request to access data stored at a first computer. In response to detecting the data access request, a request can be generated to request that a server computer generate an entangled particle pair. Measurement data can be received, the measurement data corresponding to a measurement observed after interacting a first bit of a token stored at a second computer with a first entangled particle from the entangled particle pair. An operation to perform on a second entangled particle of the entangled particle pair at the first computer can be determined and performed. A state of the second entangled particle can be measured to obtain a value, and a bit string can be generated, where the bit string can include a number that corresponds to the value.

Communication Methods and Systems

Resumen de: US20260332254A1

0000 This invention relates to methods, a receiver arrangement, a transmitter arrangement, and system comprising both the receiver and transmitter arrangements for optical communication. The invention discloses the processing of a received beam of light carrying information by determining a degree of vectorness of the received beam of light, wherein the determined degree vectorness to determine the information carried by the received beam of light. In this regard, the invention disclosed the use of the vectorness of a beam of light as an encoding basis for optical communication.

ENTANGLEMENT ASSISTED COMMUNICATION OVER TURBULENT FREE-SPACE OPTICAL LINKS USING ADAPTIVE OPTICS AND PHASE CONJUGATION ON IDLER PHOTONS

Resumen de: US20260332258A1

Disclosed are systems and techniques for entanglement-assisted communication using adaptive optics and phase conjugation of idler photons. A first periodically poled lithium niobate (PPLN) waveguide generates entangled signal-idler photon pairs using spontaneous parametric down-conversion of a first portion of an amplified beam. A demultiplexer separates signal and idler photons. The signal photons are modulated to generate modulated signal photons for transmission, and the idler photons are kept at the transmitter. A remaining pump power after the first PPLN waveguide is also transmitted and used by receiver adaptive optics to apply corrections to a received beam that includes the modulated signal photons. The remaining pump power is used as the reference signal for a homodyne receiver. The idler photons are phase-conjugated using a second PPLN waveguide, stored in an optical delay line, and

SYSTEM AND METHOD FOR MULTIPLEXING QUANTUM SIGNALS IN A QUANTUM NETWORK NODE

Resumen de: WO2026220254A1

The present invention relates to a system for multiplexing quantum signals in a quantum network node, wherein the system comprises: - a central waveguide; - at least one coherent light source that is configured to emit light that is coupled to the central waveguide; - at least one modulator that is operatively coupled to the at least one laser and is configured to change the frequency and/or amplitude of optical signals from the light emitted by the coherent light source; - a plurality of add-drop filters that are coupled to the central waveguide, each of the add-drop filters being configured to in-couple and out-couple optical signals in a predetermined frequency band to and from the central waveguide respectively, wherein each predetermined frequency band of the add-drop filters differs from the predetermined frequency bands from the other add-drop filters; - a plurality of qubit systems, each qubit system being operatively coupled to a respective add-drop filter, wherein each qubit system comprises at least one optically interfaced networking qubit, OINQ, configured to emit quantum signals; and - a controller that is operatively coupled to the at least one modulator and is configured to sequentially change the frequency of the optical signals in the central waveguide to a frequency that falls within any of the predetermined frequency bands of the add-drop filters to sequentially address the plurality of qubits systems.

一种针对微波光子折叠接收机的多信号频率测量方法

Resumen de: CN122951707A

本发明公开了一种针对微波光子折叠接收机的多信号频率测量方法，属于微波光子信号处理技术领域，包括：将模拟微波信号分别输入到光子折叠链路中，获得三通道中频信号，转换后得到数字离散信号，对数字离散信号经过希尔伯特变换、信号分离后得到三通道中每个信号的基带I/Q数据；对基带I/Q数据做FFT得到信号的前沿频率和后沿频率，计算三通道间的基带I/Q数据的频率差；测量信号的模糊数，结合模糊数和前沿频率、后沿频率对原始频率进行估计。本发明解决微波光子亚奈奎斯特折叠接收机面临的频率混叠问题，有效应对多信号时频混叠下频率模糊的问题，能够提升在复杂电磁环境中对于信号的实时捕捉、频谱监测能力。

量子网络组网方法和量子网络系统

Resumen de: CN122951933A

本发明公开了一种量子网络组网方法和量子网络系统，该方法包括：获取链路的最大纠缠生成容量，并根据实际运营成本因子，通过预设成本模型计算得到的单位纠缠成本；构建物理量子网络对应的无向图，并标注最大纠缠生成容量和单位纠缠成本；接收客户端对的纠缠资源需求；基于无向图，以最小化总成本为目标，以满足纠缠资源需求和为条件，构建最小成本流问题；调用优化算法，求解最小成本流问题，得到每条链路的纠缠生成量分配方案；根据分配方案，控制相应链路的量子设备执行纠缠生成与交换操作。本发明的方法通过引入成本模型，使最小成本优化从理论概念变为可计算、可执行的运营策略，能直接降低量子网络的实际运营开支。

一种量子传输纠错方法、装置、设备、介质及产品

Resumen de: CN122951746A

本申请实施例提供一种量子传输纠错方法、装置、设备、介质及产品，涉及量子力学领域。本方法将实时获取的量子传输时的量子噪声数据输入第一纠错模型，得到第一纠错策略，基于第一纠错策略对量子传输中的错误进行修正并获取量子传输链路在修正前后的第一通信质量指标，即可确定第一纠错策略的奖励值，基于此奖励值对纠错模型的Q值函数进行调整，即可得到第二纠错模型，以更新策略。本方案通过强化学习算法，能够根据实时的修正反馈进行模型自适应调整，不仅能够使纠错模型适应噪声环境的变化，还能够给出有效的纠错策略以解决噪声带来的问题，从而提高量子传输链路的可靠性、稳定性和数据处理质量，以及提高执行设备在复杂噪声环境下的性能。

一种基于混合态诱骗态量子密钥分发的网络安全增强方法

Resumen de: CN122951789A

本发明公开了一种基于混合态诱骗态量子密钥分发的网络安全增强方法，具体涉及量子通信技术领域，发送端通过概率性选通多路并行固定光衰减路径制备混合态量子信号，各路径独立施加随机相位后合束输出，使光子数分布由固定衰减器直接决定，与调制电压无关；利用本地监控探测器连续采集样本并通过统计推断在线锁定实际选择概率，配合主动时延补偿使各路脉冲到达时间差稳定在二十分之一脉冲宽度以内。接收端通过波分复用参考光实现全时段持续监控。本发明在不依赖模拟器件线性度的前提下实现了发送端混合态的高保真锁定与接收端网络级攻击指纹防护，有效增强了量子密钥分发系统在实际部署环境下的安全韧性。

一种可移动量子密钥充注方法及系统

Resumen de: CN122951790A

本发明公开了一种可移动量子密钥充注方法及系统，涉及量子通信技术领域。该方法将配对的两台可移动量子密钥分发设备分别移动至量子密钥分发位置，与作为中心节点的TF‑QKD探测端建立自由空间量子信道，经TF‑QKD生成两台设备之间的共享量子密钥并存储；当用户终端存在共享量子密钥通信需求时，两台可移动量子密钥分发设备分别移动至对应用户终端近端，通过近端安全链路将共享量子密钥充注至对应用户终端。本发明无需在用户之间铺设量子密钥分发光纤线路，以一个TF‑QKD探测端配合多台可移动量子密钥分发设备即可为任意两个用户直接生成并在线充注共享量子密钥，免除了密钥中继，降低了组网复杂度、光纤铺设成本及单点故障风险。

基于量子随机数加密的对讲系统及加密方法

Resumen de: CN122951777A

本申请涉及一种基于量子随机数加密的对讲系统、加密方法计算机设备及存储介质。所述系统包括：量子安全处理模块，利用单光子雪崩二极管阵列在预设工作温度范围内通过量子隧穿效应产生暗计数，生成量子随机数比特流并作为加密密钥对语音数据执行按位异或运算；射频通信模块，用于加密语音数据的收发；量子密钥分发模块，用于将量子态的偏振或相位信息编码为射频信号的相位，实现密钥的无线安全分发；窃听检测模块，用于提取量子噪声指纹并与预置基线比对，同时计算量子误码率，在任一项超过阈值时生成告警。本申请利用量子隧穿效应实现物理真随机数生成，结合一次一密加密和双重窃听检测机制，有效提高了对讲系统的通信安全性。

一种用于光纤环形网络的量子密钥资源池保护方法及系统

Resumen de: CN122932985A

本发明涉及量子安全通信与电力工控系统网络安全技术领域，尤其涉及一种用于光纤环形网络的量子密钥资源池保护方法，包括：S1、在KMS与QKD设备之间建立物理隔离的密钥注入通道，将量子密钥持续写入本地密钥资源池；S2、为每一通信节点对建立独立的密钥子池并赋予唯一通信对标识符；S3、终端设备通过标准化接口携带通信对标识符向KMS发起透明密钥调用；S4、KMS实时监测子池余量；S5、对密钥资源池操作采用哈希链机制进行保护。本发明单套QKD设备即可为环网中全部通信对提供量子密钥保护；满足工控系统实时性要求，可透明接入；通信对分区机制提供细粒度密钥隔离；动态水位阈值机制保障异常场景下的密钥供应连续性。

基于无人机通信及飞控数据的量子加密装置和方法

Resumen de: CN122932982A

本申请提供了基于无人机通信及飞控数据的量子加密装置和方法，涉及无人机通信技术领域。本发明通过装置的环境感知模块采集飞行环境参数和链路状态参数，量子密钥生成模块根据环境参数动态调整脉冲编码策略，生成时间相位联合编码的量子密钥序列，动态补偿模块计算环境参数变化量并输出校准后密钥分发指令，密钥管理模块验证密钥有效性，根据通信误码率触发密钥更新并分发有效密钥，多模通信执行模块在通信误码率低于阈值时通过自由空间传输密钥，超过阈值时切换至太赫兹信道传输加密数据，根据有效密钥对飞控数据与通信数据执行密钥加密；实现通过环境参数驱动多模块动态协同，解决无人机高速移动及复杂环境下量子密钥误码率激增与通信中断问题。

基于拓扑保护边界态的共封装光学多引擎互连系统与方法

Resumen de: CN122923184A

本发明公开了一种基于拓扑保护边界态的共封装光学多引擎互连系统与方法，属于共封装光学、硅光子学与数据中心高速光互联技术领域。针对现有CPO系统封装基板存在5～20℃残余温度梯度，引发光互连串扰升高、误码劣化、整机良率受限的行业痛点，本发明采用硅基谷光子晶体拓扑边界态波导作为多光引擎互连链路，依托晶格对称性保护的拓扑畴壁实现单向无反射、抗温度扰动的光传输，实现无需外部时钟参考的光域直连交互。本发明可稳定容忍5～20℃光引擎工作温差，相邻通道串扰≤‑35dB；兼容片上集成光源与外置可拆卸光源架构，适配100Gbps～800Gbps PAM4信号传输，可直接适配主流商用CPO硬件平台。

偏振编码集成芯片

Resumen de: CN122923160A

本公开提供一种偏振编码集成芯片，涉及量子通信技术领域。偏振编码集成芯片包括：阵列波导光栅，包括2n个输入端，第2k‑1个输入端和第2k的输入端构成第k个波长通道组，第k个波长通道组用于接收同一波长且具有预设振幅比和预设相位差的两个光信号，1≤k≤n，n≥2；其中，阵列波导光栅被配置为：将所有奇数序号的输入端接收的光信号复用后输出第一光信号；以及将所有偶数序号的输入端接收的光信号复用后输出第二光信号。

基于人工智能的解纠缠与重构方法、装置、设备及介质

Resumen de: CN122932834A

本发明涉及一种基于人工智能的解纠缠与重构方法、装置、设备及介质，本申请中，获取太赫兹基站和多个纠缠感知可重构智能超表面的配置信息，并通过纠缠感知可重构智能超表面单元采集下行导频信号对应的纠缠感知数据，基于配置信息和纠缠感知数据构建信道纠缠张量；将信道纠缠张量对应的信道矩阵压缩至本征空间，以进行量子纠缠解耦处理，得到本征参数；将本征参数、畸变太赫兹全息图，输入搭载物理增强型神经网络的全息重构引擎，得到信道环境模型；根据信道环境模型、信道纠缠张量对应的信道纠缠关系，进行纠缠敏感波束成形，得到波束成形参数；根据波束成形参数，配置纠缠感知可重构智能超表面单元的反射相位和幅度，完成太赫兹信道的优化。

DOUBLE-SINGLE-CLICK PROTOCOL FOR REMOTE STATE PREPARATION WITH A WEAK COHERENT PULSE SOURCE

Resumen de: WO2026216997A1

The present disclosure presents a double-single-click protocol for use in a quantum network, nodes of such quantum network, and related methods. The quantum network includes client nodes, server nodes, and measurement nodes, wherein at least one client node is operatively coupled via a first quantum communication link with at least one measurement node, and wherein the at least one server node is operatively coupled via a second quantum communication link with at least one measurement node, wherein the at least one server node and the at least one client node are configured to transmit quantum states toward the measurement node, and wherein the at least one server node and the at least one client node are configured to receive heralding signals from the measurement node, wherein the measurement node is configured to transmit the heralding signals upon using a double-single-click protocol.

SINGLE-CLICK PROTOCOL FOR REMOTE STATE PREPARATION WITH A WEAK COHERENT PULSE SOURCE

Resumen de: WO2026216996A1

The present disclosure presents a single-click protocol for use in a quantum network, nodes of such quantum network, and related methods. The quantum network includes client nodes, server nodes, and measurement nodes, wherein at least one client node is operatively coupled via a first quantum communication link with at least one measurement node, and wherein at least one server node is operatively coupled via a second quantum communication link with the at least one measurement node, wherein the at least one server node and the at least one client node are configured to transmit quantum states toward the measurement node for remote state preparation, and wherein the server node and the client node are configured to receive heralding signals from the measurement node, wherein the measurement node is configured to transmit the heralding signals upon using a single-click protocol.

ATOMIC VAPOR CELLS FOR ELECTROMAGNETIC FIELD SENSING AND PHOTONICS

Resumen de: WO2026215877A1

An electromagnetic field sensor device is presented, comprising sensing unit(s), each comprising: a micromachined vapor cell structure whose interaction cavity has an interrogation volume located in an optical path of a multi-photon optical excitation, wherein: the cell structure is integrated structure formed by a stack of layers, one of which having a pattern defining reservoir region and interaction cavity, and a passage of atomic fluid from the reservoir to the interaction cavity; the cell structure has at least one dimension D smaller than a wavelength X of electromagnetic field to be detected; and the reservoir region is spatially separated from the interrogation volume and separated from the optical path by distance d selected to provide a predefined minimal Rydberg spectral linewidth condition of performance of the sensing, thereby reducing electrostatic field perturbations within the interrogation volume.

Operating a Layered Quantum Networking Environment with Fidelity Estimates

Resumen de: US20260322502A1

A first message is sent from a first node in a network indicating that a first quantum element at the first node is entangled with a second quantum element at a second node in the network. The first message comprises a first estimate of a fidelity of entanglement between the first and second quantum elements, and a timestamp indicating a time associated with the first estimate. Based at least in part on the first message, a second estimate of a fidelity of the entanglement between the first and second quantum elements is generated, at a second time after the time indicated by the timestamp, and is compared to each of multiple thresholds. At least a first (second) action is performed in response to a result of comparing the second estimate to a first (second) threshold.

QUANTUM KEY DISTRIBUTION CALIBRATION SETUP AND METHOD THEREOF

Nº publicación: US20260322595A1 15/10/2026

Solicitante:

ID QUANTIQUE SA [CH]
ID QUANTIQUE SA

Resumen de: US20260322595A1

The present invention relates to Calibration system for calibrating a QKD emitter comprising said QKD emitter provided with a light source for generating light and an output connector for exiting the generated light, and a telecom characterization setup located at the output connector characterized in that the calibration system further comprises a pair of switchable connectors adapted to be switched between a first position where the connectors are exposed to the outside of the QKD emitter and a second position where the connectors are internally connected for providing a light path from the light source to the output connector, and an optical amplifier connected to the connectors switched in the first position for calibration procedure.