公开(公告)号：US08841596B2

公开(公告)日：2014-09-23

申请号：US12906624

申请日：2010-10-18

Applicant: Oliver Edward Thomas ,  Andrew James Shields ,  Zhiliang Yuan

Inventor： Oliver Edward Thomas ,  Andrew James Shields ,  Zhiliang Yuan

IPC: H01J40/14 ,  G01J1/44

CPC classification number: G01J1/44

Abstract: A photon detection system comprising an avalanche photodiode and a voltage source for said avalanche photodiode, wherein said avalanche photodiode comprises Silicon or its heterostructures and wherein said voltage source is configured to bias said avalanche photodiode with a voltage component which is static with respect to time and a voltage component which varies with time.

Abstract translation: 一种包括雪崩光电二极管和用于所述雪崩光电二极管的电压源的光子检测系统，其中所述雪崩光电二极管包括硅或其异质结构，并且其中所述电压源被配置为以相对于时间静态的电压分量来偏置所述雪崩光电二极管， 随时间变化的电压分量。

公开(公告)号：US08306225B2

公开(公告)日：2012-11-06

申请号：US10890286

申请日：2004-07-14

Applicant: Andrew James Shields ,  Zhiliang Yuan

Inventor： Andrew James Shields ,  Zhiliang Yuan

IPC: H04K1/02

CPC classification number: H04B10/70

Abstract: A quantum communication system including an emitter and a receiver, the emitter including an encoder and at least one photon source and being configured to pass a signal pulse and a reference pulse, which are separated in time, through the encoder and output the signal pulse and the reference pulse. The reference pulse has a higher probability of containing more than one photon than the signal pulse. The receiver includes a decoder and at least one detector for measuring the signal pulse and the reference pulse.

Abstract translation: 一种包括发射器和接收器的量子通信系统，发射器包括编码器和至少一个光子源，并被配置为通过编码器传递在时间上分离的信号脉冲和参考脉冲，并输出信号脉冲和 参考脉冲。 参考脉冲具有比信号脉冲包含多于一个光子的更高概率。 接收机包括解码器和用于测量信号脉冲和参考脉冲的至少一个检测器。

公开(公告)号：US20100027794A1

公开(公告)日：2010-02-04

申请号：US11530349

申请日：2006-09-08

Applicant: Zhiliang Yuan ,  Andrew James Shields

Inventor： Zhiliang Yuan ,  Andrew James Shields

IPC: H04K1/00 ,  H04L9/08

CPC classification number: H04L63/1441 ,  H04B10/70 ,  H04L9/002 ,  H04L9/0858 ,  H04L9/3226 ,  H04L63/08 ,  H04L63/1466

Abstract: A system for transmitting quantum information comprising a sending unit and a receiving unit, said sending unit comprising an encoder configured to encode a carrier with quantum information by setting a quantum state of the carrier, the quantum state determined according to a first component and a second component, the receiving unit comprising a decoder configured to cancel said second component and decode said quantum information from the carrier.

Abstract translation: 一种用于发送量子信息的系统，包括发送单元和接收单元，所述发送单元包括：编码器，被配置为通过设置载波的量子态来对量子信息进行编码，根据第一分量确定量子态， 所述接收单元包括解码器，所述解码器被配置为消除所述第二分量并且从所述载波解码所述量子信息。

公开(公告)号：US09401766B2

公开(公告)日：2016-07-26

申请号：US13524698

申请日：2012-06-15

Applicant: Zhiliang Yuan ,  James Dynes ,  Andrew James Shields

Inventor： Zhiliang Yuan ,  James Dynes ,  Andrew James Shields

IPC: H04B10/70 ,  H04L9/08 ,  H04J14/02

CPC classification number: H04B10/70 ,  H04J14/0282 ,  H04L9/0855

Abstract: A quantum communication system comprising a receiver and a plurality of transmitters, said receiver comprising a detector sub-system, each of said transmitters being configured to emit pulses of radiation, said detector subsystem comprising at least one detector, said detector being configured to detect said light pulses, the system comprising a timing control module, said timing control module being configured to control the number of light pulses received by the detector sub-system, such that just one light pulse from one transmitter reaches the detector sub-system at any one time, the timing control module also allowing the transmitter which sent said pulse to be identified.

Abstract translation: 一种包括接收机和多个发射机的量子通信系统，所述接收机包括检测器子系统，每个所述发射机被配置为发射辐射脉冲，所述检测器子系统包括至少一个检测器，所述检测器被配置为检测所述 光脉冲，所述系统包括定时控制模块，所述定时控制模块被配置为控制由检测器子系统接收的光脉冲的数量，使得来自一个发射机的仅一个光脉冲在任何一个处到达检测器子系统 时间控制模块还允许发送所述脉冲的发送器被识别。

公开(公告)号：US08755687B2

公开(公告)日：2014-06-17

申请号：US13476816

申请日：2012-05-21

Applicant: James Dynes ,  Zhiliang Yuan ,  Andrew W. Sharpe ,  Andrew James Shields

Inventor： James Dynes ,  Zhiliang Yuan ,  Andrew W. Sharpe ,  Andrew James Shields

IPC: H04B10/00

CPC classification number: H04L7/0008 ,  H04B10/70 ,  H04L9/0852

Abstract: A communication system comprising an emitter of weak light pulses, a detector which is capable of detecting single photons, and a source of a clock signal, wherein said emitter and detector are synchronized using said clock signal, the system further comprising a frequency divider for said clock signal to produce a reduced frequency clock signal and a clock regenerator for regenerating the original clock signal from the reduced frequency clock signal, the system further comprising a communication channel configured to communicate the clock signal between the emitter and detector, the clock signal being reduced before sending through said channel and reconstructed after it has exited said channel.

Abstract translation: 一种包括弱光脉冲发射器，能够检测单个光子的检测器和时钟信号源的通信系统，其中所述发射器和检测器使用所述时钟信号同步，所述系统还包括用于所述时钟信号的分频器 时钟信号以产生降频时钟信号和时钟再生器，用于从降频时钟信号再生原始时钟信号，该系统还包括被配置为在发射极和检测器之间传送时钟信号的通信信道，时钟信号被减少 在通过所述信道发送之后，在已经退出所述信道之后被重构。

公开(公告)号：US08553884B2

公开(公告)日：2013-10-08

申请号：US13421045

申请日：2012-03-15

Applicant: Andrew James Shields ,  Zhiliang Yuan

Inventor： Andrew James Shields ,  Zhiliang Yuan

IPC: H04K1/00

CPC classification number: H04B10/70

Abstract: A quantum communication system including an emitter and a receiver, the emitter including an encoder and at least one photon source and being configured to pass a signal pulse and a reference pulse, which are separated in time, through the encoder and output the signal pulse and the reference pulse. The reference pulse has a higher probability of containing more than one photon than the signal pulse. The receiver includes a decoder and at least one detector for measuring the signal pulse and the reference pulse.

Abstract translation: 一种包括发射器和接收器的量子通信系统，发射器包括编码器和至少一个光子源，并被配置为通过编码器传递在时间上分离的信号脉冲和参考脉冲，并输出信号脉冲和 参考脉冲。 参考脉冲具有比信号脉冲包含多于一个光子的更高概率。 接收机包括解码器和用于测量信号脉冲和参考脉冲的至少一个检测器。

公开(公告)号：US08295485B2

公开(公告)日：2012-10-23

申请号：US11530358

申请日：2006-09-08

Applicant: Zhiliang Yuan ,  Andrew James Shields

Inventor： Zhiliang Yuan ,  Andrew James Shields

IPC: H04K1/00

CPC classification number: H04B10/70 ,  H04L9/0858

Abstract: A measuring unit for determining information from an input signal, the unit comprising a decoder configured to perform a measurement on said input signal using two operators, a first operator configured to distinguish between two orthogonal states of said input signal and a second operator selected from an inverting operator configured to invert the result of the measurement by the first operator and a null operator configured to have a null effect on the result of the measurement by the first operator.

Abstract translation: 一种用于从输入信号确定信息的测量单元，所述单元包括被配置为使用两个运算符对所述输入信号执行测量的解码器，第一运算器，被配置为区分所述输入信号的两个正交状态和从 反转操作器被配置为反转第一操作者的测量结果，以及被配置为对第一操作者对测量结果具有零效果的空操作符。

公开(公告)号：US20100111305A1

公开(公告)日：2010-05-06

申请号：US12529495

申请日：2008-02-29

Applicant: Zhiliang Yuan ,  Andrew James Shields

Inventor： Zhiliang Yuan ,  Andrew James Shields

IPC: H04K1/00 ,  G01J1/44

CPC classification number: G01J1/44 ,  G01J2001/442 ,  G01J2001/4466 ,  H04B10/697

Abstract: A photon detection system including a photon detector configured to detect single photons, a signal divider to divide the output signal of the photon detector into a first part and a second part, wherein the first part is substantially identical to the second part, a delay mechanism to delay the second part with respect to the first part, and a combiner to combine the first and delayed second parts of the signal such that the delayed second part is used to cancel periodic variations in the first part of the output signal.

Abstract translation: 一种光子检测系统，包括配置成检测单个光子的光子检测器，用于将光子检测器的输出信号划分成第一部分和第二部分的信号分配器，其中第一部分基本上与第二部分相同;延迟机构 相对于第一部分延迟第二部分，以及组合器，以组合信号的第一和延迟的第二部分，使得延迟的第二部分被用于消除输出信号的第一部分中的周期性变化。

公开(公告)号：US07492900B2

公开(公告)日：2009-02-17

申请号：US10758457

申请日：2004-01-16

Applicant: Zhiliang Yuan ,  Andrew J. Shields

Inventor： Zhiliang Yuan ,  Andrew J. Shields

IPC: H04L9/00 ,  H04L9/12

CPC classification number: H04B10/25 ,  H04L9/0858

Abstract: A quantum communication system including (a) an emitter configured to emit a plurality of photon pulses in groups of photon pulses, each group of photon pulses emitted over a group time period, wherein the average number of photons per pulse is less than 1, and (b) a detector including a gating mechanism configured to switch the detector between an on state and an off state. The detector is in an on state for at least the duration of two photon pulses during the group time period.

Abstract translation: 一种量子通信系统，包括（a）发射器，被配置为发射光子脉冲组中的多个光子脉冲，在组时间周期内发射的每组光子脉冲，其中每个脉冲的平均光子数小于1，以及 （b）检测器，包括门控机构，其配置成在接通状态和断开状态之间切换检测器。 在组合时间段内，检测器处于导通状态至少持续两个光子脉冲。

公开(公告)号：US20070116286A1

公开(公告)日：2007-05-24

申请号：US11530358

申请日：2006-09-08

Applicant: Zhiliang Yuan ,  Andrew Shields

Inventor： Zhiliang Yuan ,  Andrew Shields

IPC: H04K1/00

CPC classification number: H04B10/70 ,  H04L9/0858

Abstract: A measuring unit for determining information from an input signal, the unit comprising a decoder configured to perform a measurement on said input signal using two operators, a first operator configured to distinguish between two orthogonal states of said input signal and a second operator selected from an inverting operator configured to invert the result of the measurement by the first operator and a null operator configured to have a null effect on the result of the measurement by the first operator.

Abstract translation: 一种用于从输入信号确定信息的测量单元，所述单元包括被配置为使用两个运算符对所述输入信号执行测量的解码器，第一运算器，被配置为区分所述输入信号的两个正交状态和从 反转操作器被配置为反转第一操作者的测量结果，以及被配置为对第一操作者对测量结果具有零效果的空操作符。