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Resultados 50 a 75 de 75
Resumen de: AU2024400578A1
Methods and apparatus for generating quantum entanglement detect success of entanglement attempts by monitoring output signals from one or more detectors for heralding patterns indicating that a pair of quantum systems is in an entangled quantum state. In response to detecting a heralding pattern that indicates a successful entanglement attempt a low latency signal is output on one or more signal lines; and a higher latency message is transmitted by a messaging interface. The higher latency message contains information that identifies the pair of quantum systems entangled by the successful entanglement attempt. The pair of quantum systems may be inhibited from participating in further entanglement attempts while further entanglement attempts are performed on other pairs of quantum systems.
Resumen de: BE1033110A1
La présente invention divulgue un procédé, un dispositif et un support de stockage pour l’échange multipartite d’informations basé sur des états GHZ, appartenant au domaine technique des communications quantiques. Le procédé comprend les étapes suivantes : tout d’abord, un STTP prépare des particules en état GHZ et les distribue ; les utilisateurs appliquent des opérateurs unitaires de type bit, puis renvoient les particules ; le STTP effectue une mesure conjointe et publie les résultats afin d’assister les utilisateurs dans la détermination de l’encodage ; ensuite, après l’échange, les utilisateurs appliquent une seconde fois des opérateurs et renvoient à nouveau les particules ; le STTP procède à une nouvelle mesure conjointe et publie les résultats, permettant aux utilisateurs de déduire les informations en clair des autres parties ; enfin, chaque partie calcule et diffuse une valeur de hachage, et si les valeurs sont cohérentes, l’échange est confirmé comme réussi.
Resumen de: WO2026119399A1
Provided are an optical system for directing a plurality of light beams towards a plurality of ions at an ion trapping location, and a manufacturing method for an optical system. The optical system comprises an optics module comprising a plurality of waveguides and a deflecting element (e.g. micro mirror) which reflects light from the waveguides toward an ion trapping location. A lens system is arranged between the deflecting element and the ion trapping location to be commonly traversed by the light beams to focus each of the light beams to a respective one of the trapped ions. The present disclosure provides a scalable, modular, integrated approach for addressing ions trapped in an ion trap.
Resumen de: US20260163650A1
0000 A method comprises: at a node on path of a quantum network that leads from a source to a destination, propagating quantum entanglement hop-by-hop along the path toward the destination by: establishing a first entanglement link with a previous-hop node on the path; determining a next-hop node on the path based on the destination; attempting to establish a second entanglement link with the next-hop node; and upon receiving an acknowledgement from the next-hop node indicating that the second entanglement link is established, performing an entanglement swap on the first entanglement link and the second entanglement link to establish a third entanglement link between the previous-hop node and the next-hop node.
Resumen de: WO2026121371A1
The present disclosure is for transmitting or receiving data in a quantum communication system, and a method may comprise the steps of: acquiring system information; performing a random access procedure on the basis of the system information; transmitting a first signal for measurement to a second device; transmitting a second signal for measurement to a third device; receiving information related to the first measurement result from the second device; generating a data signal by performing data encoding on the basis of a quantum teleportation operator determined on the basis of the first measurement result; and transmitting, to the second device, the data signal on which the data encoding has been performed.
Resumen de: WO2026117866A1
The present disclosure relates to techniques for stabilizing, synchronizing, or monitoring quantum communication networks, including multi-node networks. The quantum communication network includes a node array with a first node and a second node interconnected by an optical communication channel. A transmitter unit at the first node generates a quantum signal and a reference signal distinguishable across at least two degrees of freedom, multiplexes the signals, and transmits a multiplexed signal through the channel. A receiver unit at the second node receives and demultiplexes the multiplexed signal back into the quantum and reference signals. A stabilization feedback loop detects the reference signal, determines error signals indicative of network parameter errors associated with the channel, and controls at least one optical actuator to apply corrective operations to stabilize the network parameters. In some embodiments, a monitoring unit derives monitoring signals from the detected reference signal to provide status indicators of network performance.
Resumen de: WO2026121374A1
The purpose of the present disclosure is to transmit or receive data in a quantum communication system, and a method therefor may comprise the steps of: acquiring system information; performing a random access procedure on the basis of the system information; transmitting, to a second device, a first signal for measurement; receiving information related to a first measurement result from the second device; generating a data signal by performing data encoding on the basis of a quantum teleportation operator determined on the basis of the first measurement result; and transmitting the data signal to the second device.
Resumen de: WO2026121359A1
The present disclosure is to perform an entanglement distillation protocol by using an entangled reused qubit in a communication system. This method may comprise the steps of: performing a random access procedure with a second device; transmitting configuration information to the second device; generating a first signal and a second signal; transmitting the second signal to the second device; determining at least one position where a reused qubit is to be used within a first entanglement distillation protocol, on the basis of a yield of the first entanglement distillation protocol; and obtaining a qubit having a fidelity greater than or equal to a first threshold by performing the first entanglement distillation protocol.
Resumen de: WO2026121360A1
The present disclosure is to perform an entanglement distillation protocol by using entanglement reuse qubits in a communication system, and a method may comprise the steps of: performing a random access procedure with a second device; transmitting configuration information to the second device; generating a first signal and a second signal; transmitting the second signal to the second device; determining, on the basis of the yield of the entire entanglement distillation protocol, at least one location at which an additional entanglement distillation protocol using reuse qubits is performed within the entire entanglement distillation protocol; and obtaining qubits having fidelity equal to or greater than a first threshold by performing the entire entanglement distillation protocol.
Resumen de: GB2632338A
A photonic circuit comprising: a number of input paths; a number of output paths, each output path associated with a corresponding frequency bin; and a photonic switch network coupled between the input paths and the output paths, the photonic switch network comprising an arrangement of active optical elements to selectively couple a photon from any one of the input paths to any one of the output paths; and control logic coupled to the photonic switch network, and configured to: receive an input signal indicative of the presence of one or more incoming photons in a corresponding one or more of the input paths; select, based on the received input signal, one or more output paths, each of the one or more selected output paths associated with a corresponding frequency bin that includes a frequency of the one or more incoming photons; and generate one or more control signals to configure the active optical elements such that, for each of the one or more selected output paths, a photon of the one or more incoming photons is coupled to that selected output path. Also disclosed is a corresponding method for using the photonic switch network.
Resumen de: CN122179084A
本发明公开了一种微波连续变量量子密钥分发方法和系统，涉及量子密钥分发技术领域。该方法包括：发射端微波频率的高斯调制相干态，并将高斯调制相干态耦合到自由空间量子信道中；接收端对接收到的高斯调制相干态进行零差检测，得到正则分量；接收端在认证的经典信道上广播每个高斯调制相干态的检测基，发射端保留与接收端相同检测基对应的正则分量，并根据保留的正则分量和接收端得到的正则分量，确定N对原始密钥，然后将N对原始密钥分割成固定大小的小块，并利用隔离森林算法去除所有小块中的异常小块；通信双方通过经典信道对剩余的小块进行后处理协议，得到安全密钥。该方法解决了现有技术中存在的微波CV‑QKD通信距离短的问题。
Resumen de: CN122179093A
本发明公开了一种单收发器环网中基于频分双工的双向连续变量量子密钥分发方法及系统。该方法基于单片集成的硅光收发芯片，通过为正向与反向链路预设光载波频率偏移，在频域隔离量子信号与光纤瑞利后向散射噪声。发送端生成含量子信号与导频信号的宽带波形，经单根光纤双向传输；接收端利用同一芯片的激光源作为本振光进行相干外差探测。数字信号处理模块执行正交化校正、相位恢复及匹配滤波，抑制噪声并提取量子信号以生成安全密钥。本发明解决了集成连续变量量子密钥分发系统收发分离导致的组网不灵活、光纤利用率低及单纤双向传输中散射噪声干扰严重的问题，为城域量子环网提供了低成本、高灵活的解决方案。
Resumen de: CN122159966A
本申请公开了一种量子线路调度方法及相关装置，属于量子计算技术领域。方法包括：获得目标量子线路的拓扑结构，作为第一拓扑结构，其中，所述目标量子线路为本批次调度中发起调度请求但未尝试调度的量子逻辑线路；基于所述第一拓扑结构，利用第一映射关系，确定分配给所述目标量子线路的目标物理比特组，其中，所述第一映射关系为拓扑集合中每一第二拓扑结构与可用的物理比特组之间的映射关系，所述拓扑集合由量子计算平台的物理比特布局决定的所有可能的第二拓扑结构组成；当中本批次调度中还存在尚未尝试调度的量子逻辑线路和可用的物理比特组时，从尚未尝试调度的量子逻辑线路中选择一个作为目标量子线路，返回执行获得目标量子线路的拓扑结构，作为第一拓扑结构的步骤；当不存在可用的物理比特组时、或存在可用的物理比特组但所有发起调度请求的量子逻辑线路均尝试调度后，并行执行已分配目标物理比特组的目标量子线路。应用本申请实施例，提高量子计算平台的服务效率和吞吐量。
Resumen de: CN122160046A
一种基于双重自适应控制的量子密钥分发（QKD）后处理方法及系统，本发明采用“信道置信度—速率兼容QC‑LDPC”双重闭环控制架构：内环通过评估信道置信度动态调整误码检测比例，在保障安全性的前提下优化开销；外环引入带有非对称阈值的迟滞控制器，决策最佳纠错码率以抑制“乒乓效应”。配合基于IEEE 802.11n标准基矩阵的打孔与缩短算法，生成速率兼容的校验矩阵，在低噪区实现带宽释放，在极端高噪区通过鲁棒模式维持链路物理存续（Keep‑Alive）。本发明有效平衡了系统吞吐量与鲁棒性，避免了因信道波动导致的系统重置与时间惩罚。
Resumen de: CN122160199A
本申请涉及量子信道的语音通信方法和系统，给出了语音量子通信系统的语音去抖动与语音播放完整性处理方法，能够有效避免由于信道不稳定而出现丢包使接收端语音播放出现抖动和不连续的问题，既能满足语音通信的安全性，又能满足用户安全实时通信的要求。
Resumen de: US20260153897A1
Systems and methods are provided for implementing and utilizing embedded quantum random number generator (QRNG) based devices. An optical device configured for use in quantum random number generation may have an integrated structure that includes, at least, an optical source configured to emit a light beam, a photodetector configured to detect light based on detection criteria, and a polarizer disposed between the optical source and the photodetector. The optical source, the photodetector, and the polarizer are directly integrated or embedded into the integrated structure. The polarizer is configured to process light based on polarization criteria that include passing or discarding light having a particular polarization. The optical device is configured for use in facilitating or enabling quantum random number generation based on detection of the light beam by the photodetector based on the detection criteria.
Resumen de: WO2026116505A1
The objective of the present disclosure is to perform a quantum key exchange having basis independence in a wireless communication system. This method comprises steps in which a first device: performs an access procedure with a second device; establishes a connection with the second device; transmits capability information to the second device; establishes at least one quantum channel with the second device; and performs the quantum key exchange by using the at least one quantum channel, wherein the quantum key exchange can be performed using a transmit basis and a measurement basis that are different from each other.
Resumen de: US20260154602A1
A quantum networking node is provided for use in a modular optical architecture for quantum computing. The quantum networking node includes multiple memory qubits; and one or more communication qubits. The multiple memory qubits and the one or more communication qubits are part of a lattice in an ion trap. Moreover, the memory qubits and the communication qubits are made from a pair of different ion species, each ion species of the pair of different ion species being individually selected from Ba, Ca, Sr, or Mg.
Resumen de: AU2026203730A1
A system comprises a plurality of qubit modules and a plurality of port connections. Each qubit module includes circuitry configured to operate on a plurality of physical qubits to generate a topological code patch for a fault-tolerant logical qubit during each of a plurality of operating cycles. Each topological code patch has a plurality of boundaries in an entanglement space. Each port connection couples a pair of the qubit modules and is selectably operable to perform, during one code cycle, joint measurement operations on physical qubits of the respective topological code patches generated in the pair of the qubit modules. The port connections couple each of the qubit modules to two or more other qubit modules. A method comprises generating a topological code patch and performing topological code operator measurements between two topological code patches using a port connection directly coupling physical qubits between first and second workspace qubit modules. ay a y
Resumen de: GB2644730A
A system and method for taking measurements in a formation. The system may include a quantum entangled photon source that entangles an idler particle and a probe particle, a transmitter disposed in a wellbore and connected to the quantum entangled photon source by a transmitter waveguide, a receiver disposed in the wellbore, and a carrier laser connected to the receiver by a carrier waveguide. The system may further comprise a detector connected to the carrier waveguide and an information handling system in communication with the quantum entangled photon source, the carrier laser, and the detector. The method may include broadcasting a probe particle from a transmitter into a formation, capturing the probe particle with at least one receiver after the probe particle has interacted with the formation, and measuring the probe particle during an interaction with the formation using an idler particle in a detector.
Resumen de: GB2642294A
System for time transfer between a first and second clock, comprising an entangled photon transmitter 100, a first photon receiver 200 comprising first clock 600, and a second photon receiver 300 comprising second clock 700. Entangled photons are generated and first 114 & second 116 photons are transmitted to the respective receivers 200/300. At the receivers 200/300, respective series of emission timestamps are determined by removing respective time of flight offsets from each detection timestamp. A clock offset between the first 600 and second clock 700 is determined by calculating a cross-correlation between the respective series of emission timestamps, and time is transferred by adjusting either clock by the clock offset. A group clock offset may be determined from an average of a plurality of clock offsets, and the clocks may be adjusted by the group clock offset. The transmitter 100 may be at a satellite. The time of flight offsets may be determined using a synchronisation laser system or a laser ranging beam.
Resumen de: WO2025021380A1
This invention provides a Rydberg-atom based electromagnetic field receiver for a wireless telecommunications network, the electromagnetic field receiver comprising a plurality of coupling laser with one being in active state and the other ones being in preparation state, allowing a fast switching between an active laser and a prepared laser in order to provide a fast frequency hopping scheme.
Resumen de: CN122137551A
本发明公开了一种完全参考系无关量子密钥分发协议的实现方法及系统，属于量子信息技术领域。通信双方Alice和Bob随机选择相互无偏基矢制备量子态并发送给第三方Charlie；Charlie进行贝尔态投影测量并宣布成功结果；双方公布基矢信息，划分数据集并计算增益与误码率；构造3×3关联张量矩阵并奇异值分解，得到三个与参考系无关的奇异值，结合误码率计算安全密钥率；最后执行密钥协商与保密增强提取安全密钥。本发明不要求成码基矢对齐，彻底消除了对参考系校准的依赖，在成码基矢存在漂移下仍能稳定成码，且窃听者信息量更低，显著提升了量子密钥分发系统的实用性与安全性。
Resumen de: CN122137460A
本申请提供了一种微波光子伊辛机工作状态的调试系统及调试方法，涉及微波光子学技术领域。该系统包括微波光子伊辛机模块、第一测量模块、第二测量模块和调试模块；其中微波光子伊辛机模块和调试模块构成封闭环路；微波光子伊辛机模块用于产生微波脉冲信号；第一测量模块用于测量微波脉冲信号的实时参数并生成第一状态判别信号；调试模块用于接收第一状态判别信号和微波脉冲信号，并根据第一状态判别信号调节微波脉冲信号，以调节封闭环路的非线性特性；第二测量模块用于测量经调试模块调节后的微波脉冲信号，基于调节后的微波脉冲信号生成第二状态判别信号，并反馈至调试模块中。
Nº publicación: CN122137465A 02/06/2026
Solicitante:
天府绛溪实验室
Resumen de: CN122137465A
本发明提供一种片上量子光源测试校准方法、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：获取片上量子光源的关联测量数据和Franson干涉测量数据，并基于关联测量数据和Franson干涉测量数据提取对应各频率通道的时间关联信息和干涉相位参数；确定各频率通道之间的时间延迟关系，并构建统一时间参考，以对干涉相位参数进行对齐处理；构建频率‑相位关系模型，并对干涉相位参数执行校正处理，获得标准化干涉相位参数；基于标准化干涉相位参数生成对应各频率通道的校准结果及一致性评估结果。本发明实现了多频率通道量子光源纠缠性能的量化表征与一致性校准，从而提升各通道间相位一致性并获得整体一致性评估结果。
BOPI
Sede Electrónica
