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311
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Última actualización
01/07/2026 [13:59:00]
Resultados 25 a 50 de 311
Resumen de: CN122247523A
本申请公开了一种多协议集成芯片，涉及量子保密通信与集成光电子学技术领域。该芯片包括阵列波导光栅与合束输出单元，阵列波导光栅接收经同一孔径传输的偏振量子信号、时间仓量子信号和经典量子信号并完成光谱汇聚，通过两路端口分别输出偏振量子信号的两个相干正交分量，其中一路端口合束输出偏振量子信号另一分量、时间仓量子信号与经典量子信号；合束输出单元还原偏振量子信号，并将多类信号合束输出至光纤。本申请可兼容多编码协议，可切换适配不同测试与封装场景，同时提升量子密钥分发系统的通用性与信噪比。
Resumen de: CN122247522A
本发明公开了一种基于三维电子‑光子纠缠态的高容量隐形传态方法：步骤1：Alice制备电子‑光子纠缠对并将其拆分为光子序列P和电子序列E；步骤2：Alice将电子序列E发送给Bob；步骤3：Alice选择酉操作并作用于光子序列P，得到光子序列，Bob得到电子序列；步骤4：Bob使用相移电子全息术对电子序列进行干涉测量，采集干涉全息图；步骤5：Bob告知Alice测量光子序列，并将光子数态及位置告知Bob；步骤6：Bob对干涉全息图进行相位重建，解码出原始信息。本发明通过合理设计编码相位间隔，通过置信系数调控极低的解码失败率，超越了传统3维光子贝尔态超密集编码的2log23比特编码容量理论极限，能够以0.27%的误码率达到8.5比特的理论编码容量。
Resumen de: WO2026127158A1
The objective of the present disclosure is to perform quantum secure direct communication by using a time bin and polarization in a communication system. The method may comprise the steps of: acquiring system information; performing a random access procedure on the basis of the system information; generating a first signal; transmitting the first signal to a second device; receiving, from the second device, a second signal on which encoding has been performed using the first signal; and decoding the second signal.
Resumen de: WO2026128625A1
Methodology of generation, with the use of a degenerate four-wave mixing nonlinear process, of ultrafast synthesized quantum light pulses with attosecond resolution (as demonstrated - at petaHertz and sub-petaHertz frequencies) and that exhibit amplitude squeezing. Demonstration of controllability and tunability of quantum uncertainty of light in real time via switching between amplitude and phase squeezing. Example of an attosecond quantum encryption protocol leveraging squeezed synthesized light for secure digital communication at petahertz-speeds.
Resumen de: US20260172121A1
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.
Resumen de: WO2026126866A1
In a ground station that receives light from satellites, the coupling efficiency between a telescope and an optical fiber or an optical communication sensor is increased. Light emitted from an optical transmitter 41 passes through a telescope 11, is reflected by an optical reflection unit 43, and enters and is received by a tracking camera 21 via a first optical system 23. A drive control unit 31 controls a second optical system 27 so that the light reflected by the optical reflection unit 43 is incident on the center of a sensor unit 25 while continuing to control the first optical system 23 so that the light received by the tracking camera 21 is located at the lens center. While maintaining the control of the second optical system 27, the drive control unit 31 causes the telescope 11 to perform an operation that simulates orbit tracking. On the basis of the attitude of the telescope 11 and the light reception position in the sensor unit during the orbit tracking step, the drive control unit 31 obtains drive control information for controlling one or more of the first optical system 23, the second optical system 27, and the attitude of the telescope 11.
Resumen de: DE102024138694A1
Eine Sendevorrichtung (2a) zur Bereitstellung eines kodierten optischen Ausgangssignals (L3), insbesondere für einen Quantenschlüsselaustausch, eine Sendestation (7a), insbesondere Satellit (9b), mit entsprechender Sendevorrichtung (2a) sowie ein Kommunikationssystem (1) zur Bereitstellung kodierter optischer Kommunikation werden vorgeschlagen, wobei die Sendevorrichtung (2a) eine als Doppelpulsquelle ausgestalteten Lichtquelle (110) zur Bereitstellung eines Doppelpulspaare (D) und/oder Einzelpulse (P) umfassenden optischen Eingangssignals (L0), und eine Modulationseinheit (120) zum Modulieren der Phasenanteile der Polarisationskomponenten des optischen Eingangssignals (L0) im Zuge einer Kodierung des optischen Ausgangssignals (L3) umfasst, und wobei die Modulationseinheit (120) dazu ausgestaltet ist, wahlweise eine polarisations-, phasenbasierte Kodierung (X, Y) und/oder Time-Bin-Kodierung der Pulse (P) des optischen Ausgangssignals (L3) zu ermöglichen.
Resumen de: US20260169345A1
Circuits and methods that implement multiplexing for photons propagating in waveguides are disclosed, in which an input photon received on a selected one of a set of input waveguides can be selectably routed to one of a set of output waveguides. The output waveguide can be selected on a rotating or cyclic basis, in a fixed order, and the input waveguide can be selected based at least in part on which one(s) of a set of input waveguides is (are) currently propagating a photon.
Resumen de: US20260172122A1
A system and method for distributing quantum entanglement using optically protected fiber optical paths is described. In some embodiments, multiple optical paths are used to connect a source site to a receiver site. Quantum entangled particles are transmitted from the source site to the receiver site using a first one of the multiple optical paths and related service channel information is transmitted from the source site to the receiver site using a second one of the multiple optical paths. In response to a failure of either the first or second optical path, an entanglement distribution controller automatically updates the routing such that the service channel information and the quantum entangled particles are routed concurrently on a remaining one of the first or second optical path.
Resumen de: EP4761145A1
The present invention relates to a single photon light source capable of generating single photons with a high repetition rate and a high collection efficiency by positioning an emitter in a nanogap of a nano-antenna including a metal nanoparticle and a metal layer, and by controlling Purcell enhancement in the nanogap.The single photon light source of the present invention is easy to manufacture with low manufacturing costs due to its simple structure and has excellent light collection efficiency by emitting single photons vertically upward through an optical antenna structure of a nano-antenna. In addition, single photons may be generated by applying various emitters to a nano-antenna, a high production yield is obtained due to the wide bandwidth, and operation may be possible at room temperature at various wavelengths.
Resumen de: GB2702580A
A distributed quantum computing system 100, e.g. a quantum memory, comprises: quantum computing units 102 of qubits; quantum networking units 104, each coupled to qubits on the quantum computing units and being configured to selectively couple each qubit to a fixed number of outputs; entanglement units 106, each having inputs to receive signals from the quantum networking units 104 and configured to entangle the received signals; a fixed coupling network 110 comprising predefined network pathways between outputs of the quantum networking units and the inputs of the entanglement units; and a control system 108 configured to control the plurality of the quantum networking units 104 to entangle qubits of the quantum computing units according to a topology associated with an error correcting code. The networking units 104 comprise photonic integrated chips to selectively couple each qubit to the fixed number of outputs. Network pathways may comprise optical fibers. The topology may be divided into tiles with connections such that the number of connections between tiles is minimised. Entanglement units 106 comprise performing Bell state measurements. The error-correcting code may be: low-density parity-check, qLDPC; hyperbolic or semi-hyperbolic; Floquet. figure 1
Resumen de: WO2025221285A2
Techniques for generating and maintaining a buffer of on-demand, pairwise quantum entanglement instances using programmable optical switchboard architectures within quantum repeaters are disclosed. A rate of establishing pairwise quantum entanglement instances between quantum repeaters of a quantum entanglement network may be higher than both a rate of decay of said instances and a rate of consumption of said instances for providing distributed quantum entanglement, such that on-demand distribution of quantum entanglement may be provided for customers. Furthermore, an optical switchboard with a given quantum repeater may be configured to route between any of the quantum memory locations provided within the quantum repeater, such that an optimization of the usage of such buffers of quantum entanglement instances may be ensured.
Resumen de: CN122226155A
本申请涉及一种光子张量计算方法、光子张量核、计算机设备和存储介质。所述方法包括：生成多波长光信号，并通过第一环回阵列波导光栅，对多波长光信号中各波长的光信号分别进行调制后，复用得到多路多波长的第一光信号；对每路第一光信号进行分束，得到多个第一光信号副本，并通过多个第二环回阵列波导光栅，分别对单个第一光信号副本中各波长的光信号分别进行调制，复用得到单路第二光信号；对各第二光信号进行光电转换，得到张量计算结果。采用本方法能够提高光子张量计算精度和可扩展性。
Resumen de: WO2024243546A2
The inventors have developed methods and systems to address the above challenges using entangled photons with multiple colors transmitted with a classical data stream as a technique to detect eavesdropping on the data stream and to prevent reverse engineering for demodulating the entangled bits from the data stream. In some embodiments, a time gate is used to interleave the quantum and classic signals to provide quantum encryption of fiber optic communication protocols.
Resumen de: EP4465555A1
0001 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 (5) connected to the connectors switched in the first position for calibration procedure.
Resumen de: CN122226246A
本发明提供一种基于Bell态纠缠粒子的多用户量子公平交换方法及系统。通过利用Bell态的量子纠缠特性和幺正矩阵超密编码技术，结合半可信第三方机制，实现了多方秘密信息的公平、安全交换，解决了传统协议中时间不公平、高第三方依赖及抗量子攻击能力弱的问题。
Resumen de: CN122226163A
本发明公开了一种基于微波光子技术的激光光源频率稳定性测量系统，包括：光源、微波发生模块、电光调制模块、基于色散的相位调制模块、光电探测模块、相位检测模块、信号处理模块；其中，光源产生待测光信号，微波发生模块产生微波信号；电光调制模块对待测光信号和微波信号进行载波不抑制单边带调制，得到光载波信号；并将光载波信号拆分成第一、第二光载波信号；基于色散的相位调制模块对第一光载波信号引入相移，得到第三光载波信号，并将第三光载波信号转换为第一电信号，将第二光载波转换为第二电信号；相位检测模块输出与第一电信号和第二电信号之间的相对相位差相关的电压值；信号处理模块基于电压值，确定待测光信号的频率变化值。
Resumen de: CN122226162A
本发明公开了一种低功耗并行光电通信系统，该系统包括发射子系统、接收子系统及多通道成像光纤链路；发射子系统包含蓝光Micro‑LED发射阵列芯片及其驱动芯片；接收子系统包含长波长Micro‑LED探测阵列芯片及其读出芯片；成像光纤链路在收发端间传输并行光信号。其中长波长Micro‑LED探测器采用铟组分可调的InGaN/GaN多量子阱有源区，使其带隙小于入射蓝光光子能量，从而实现蓝光的高效、强吸收；同时，通过深度耗尽效应将探测器结电容压缩至飞法级，并驱使光生载流子以饱和速度漂移。该系统结合“宽而慢”架构与高密度集成，实现了高带宽、高响应度与超低功耗。
Resumen de: CN122226269A
本发明公开了一种基于光源统计实时监测的抗攻击量子密钥分发方法及系统，属于量子通信领域。本发明利用亚泊松固态单光子源的二阶关联函数g(2)(0)作为“安全指纹”，通过实时监测其在通信过程中的统计偏移，实现对光子数分流（PNS）攻击的高灵敏度、毫秒级检测。在确认无攻击的安全状态下，系统启用增强模式，通过一个由监测结果动态确定的安全权重因子，在信息论安全的框架内合法地纳入双光子脉冲的密钥贡献，从而突破传统GLLP框架无条件剔除多光子脉冲的保守限制。本发明大幅降低了对单光子源纯度的硬件要求，使得中等纯度光源得以高效利用；同时，在高损耗场景下，密钥率较现有技术可提升三个数量级以上，显著延长了QKD的无中继安全传输距离。
Resumen de: CN122226282A
本发明涉及光通信和量子密钥分发技术领域，公开了一种贝尔态测量装置及量子密钥分发系统，贝尔态测量装置包括两个消偏模块、不等臂偏振干涉仪以及两个单光子探测器，不等臂偏振干涉仪能够对经过偏振随机化的相位编码量子态进行偏振分束，对分束后的一路偏振分量进行延时，再对两个偏振分量分别进行45°偏振旋转，最后对旋转后的偏振分量进行二次偏振分束。与现有技术相比，本发明彻底消除偏振态波动、光纤双折射、偏振模色散等因素对贝尔态测量的影响，无需额外偏振跟踪、补偿模块，显著降低系统复杂度和成本，提升系统环境适应性；可以提高HOM干涉的准确性，降低量子密钥分发系统的误码率。
Resumen de: CN122226161A
本发明提供了一种调制器的设计方法、调制组件及量子密钥分发光源，该设计方法包括：向多个调制器模型分别施加随时间变化的第一正向偏置电压，利用多个调制器模型分别对调制器进行瞬态仿真，得到多个第一映射关系；在每个第一映射关系下，利用与第一关系对应的调制器模型对调制器进行仿真，得到多个第二映射关系；在每个第二映射关系中确定有效折射率从峰值的A％下降至B％的时长；将多个调制器模型各自对应的时长、半波电压和相对损耗归一化后输入至目标函数，得到多个调制器模型各自对应的目标函数值；将目标函数值低于预设值的调制器模型确定为目标调制器模型，目标调制器模型的结构参数用于确定调制器的结构参数。
Resumen de: CN122226247A
本申请提供了一种针对量子通信系统的荧光攻击检测方法、装置以及量子通信系统，通过荧光攻击检测装置中的各模块对待检测设备进行测试光信号接入前以及测试光信号接入后进行自动化的计数信息的采集，并基于检测得到的本底计数信息、峰值计数信息、测试计数信息以及基准端口反射位置，实现对待检测设备的荧光攻击检测以及荧光泄漏率的计算以及安全性评估。本申请实现了对荧光攻击的正向检测验证，并且可以基于实际需要进行荧光攻击的演示，通过多参数的系统分析，可以更加全面地反映待检测设备的安全性，有效提升了量子通信系统的实际安全性。
Resumen de: CN122204312A
本发明公开了一种QKD与PQC融合的网络时隙与密钥协同调度方法及系统，属于量子密钥分发技术领域，包括：S1、构建统一的资源状态库；S2、设计策略引擎并初始化参数；S3、接收业务请求并进行初步筛选；S4、根据业务需求执行时隙‑密钥分配；S5、监测实时状态，若无异常则返回步骤S3，若异常则执行步骤S6；S6、执行故障处理并优化资源分配。本发明在技术上采用QKD+PQC融合密钥，不单单采用QKD密钥进行加密，同时考虑采用PQC加密算法进行业务加密，同时将两种不同密钥资源与OTN时隙相结合，在保障业务加密不中断的同时，充分合理调度分配密钥资源，最大限度保障运营商OTN网络的安全性。
Resumen de: DE102024004187A1
Die Erfindung betrifft eine Verifikationsbaugruppe (100) zur Verifikation der Sicherheit eines Quantenprotokolls, QKD, umfassend: einen Quantenkanaleingang (110); einen Weiterleitungsquantenkanal (130); einen Quantenkanalausgang (120); einen Anschluss (140) für eine Abhörleitung (140), der dazu vorgesehen ist, an einem öffentlichen Kommunikationskanal angeschlossen zu werden; und einen Kommunikationsanschluss (150) für eine Kommunikationsleitung (150), der dazu vorgesehen ist, mit einer externen Vorrichtung in bidirektionaler Kommunikation verbunden zu werden.
Nº publicación: US20260161987A1 11/06/2026
Solicitante:
PSIQUANTUM CORP [US]
Psiquantum, Corp.
Resumen de: US20260161987A1
Heralded single photon source pair circuits can produce a photon on one of two output waveguides without determining which waveguide has the photon. Such circuits can be used, for example, to provide qubits in a superposition of their orthogonal states. An entangled-state generator circuit can operate on one of the output waveguides of each of a number of heralded single photon source pair circuits to produce a set of photonic qubits in a target entangled state (such as a Bell state or n-GHZ state) on the other output waveguides of some or all of the heralded single photon source pair circuits.
BOPI
Sede Electrónica
