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公开(公告)号：US08897057B2
公开(公告)日：2014-11-25
申请号：US13561843
申请日：2012-07-30
CPC分类号： G11C11/14 , B82Y10/00 , G02F1/015 , G02F2001/01791 , G11C7/005 , G11C13/04 , G11C2216/08
摘要： A quantum memory component including a quantum dot molecule having first and second quantum dots provided in respective first and second layers separated by a barrier layer; an exciton comprising an electron and hole bound state in said quantum dot molecule, the spin state of said exciton forming a qubit; first and second electrical contacts respectively provided below the first quantum dot and above the second quantum dot; a voltage source to apply an electric field across said quantum dot molecule; a controller to modulate the electric field across the quantum dot molecule, including an information acquiring circuit to acquire information concerning the relationship between fine structure splitting of the exciton and the applied electric field and a timing circuit to allow switching of the exciton from an indirect configuration to a direct configuration at predetermined times derived from the fine structure splitting.
摘要翻译： 一种量子存储器组件，包括量子点分子，其具有第一和第二量子点，该第一和第二量子点设置在由阻挡层隔开的相应的第一和第二 在所述量子点分子中包含电子和空穴结合状态的激子，所述激子的自旋状态形成量子位; 分别设置在第一量子点的下方且位于第二量子点的上方的第一和第二电触头; 用于在所述量子点分子上施加电场的电压源; 控制器，用于调制跨越量子点分子的电场，包括信息获取电路以获取关于激子的精细结构分裂与所施加的电场之间的关系的信息，以及定时电路，以允许从间接配置切换激子 以从精细结构分裂得到的预定时间的直接配置。
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公开(公告)号：US08227830B2
公开(公告)日：2012-07-24
申请号：US11292344
申请日：2005-12-02
IPC分类号： H01L33/06
CPC分类号： H01S5/18394 , B82Y10/00 , B82Y20/00 , H01S5/041 , H01S5/06216 , H01S5/105 , H01S5/18319 , H01S5/18327 , H01S5/18369 , H01S5/3412
摘要： A photon source comprising a photon source body, said photon source body comprising at least one quantum dot; carrier injection means for injecting carriers into said at least one quantum dot and change of state means for changing the state of the carriers within the quantum dot after a predetermined time duration, the carrier injection means injecting carriers which are configured to allow emission of radiation by radiative recombination.
摘要翻译： 一种包括光子源体的光子源，所述光子源体包括至少一个量子点; 用于将载流子注入所述至少一个量子点的载流子注入装置和在预定持续时间之后改变量子点内的载流子状态的装置，载流子注入装置注入被配置为允许通过 辐射重组。
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公开(公告)号：US20110108743A1
公开(公告)日：2011-05-12
申请号：US12903490
申请日：2010-10-13
CPC分类号： H01L33/06 , B82Y20/00 , H01L33/0012 , H01L33/08 , H01L33/105 , H01S5/3412 , H01S5/3416
摘要： A photon source comprising a semiconductor heterostructure, said semiconductor heterostructure comprising a quantum well, a barrier region adjacent said quantum well and a quantum dot provided in said quantum well, the photon source further comprising electrical contacts and a power supply coupled to first and second electrical contacts configured to apply a tuneable electric field across said quantum dot to control the emission energy of said quantum dot, said electric field being tuneable across an operating range an wherein the tunnelling time of carriers from said quantum dot to said first electrical contact and the tunnelling time of carriers from said quantum dot to said second electrical contact are greater than the radiative decay time of an exciton in said quantum dot over said operating range for controlling the emission energy, said photon source being configured such that emission from a single quantum dot exits said photon source.
摘要翻译： 一种包括半导体异质结构的光子源，所述半导体异质结构包括量子阱，与所述量子阱相邻的势垒区和设置在所述量子阱中的量子点，所述光子源还包括电接触和耦合到第一和第二电 触点，被配置为在所述量子点上施加可调电场以控制所述量子点的发射能量，所述电场可在整个工作范围内调节，其中载流子从所述量子点到所述第一电触点的隧穿时间和隧穿 从所述量子点到所述第二电接触的载流子的时间大于在所述操作范围上的所述量子点中的激子的辐射衰减时间，用于控制发射能量，所述光子源被配置为使得来自单个量子点的发射退出 说光子源。
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公开(公告)号：US09401766B2
公开(公告)日：2016-07-26
申请号：US13524698
申请日：2012-06-15
申请人： Zhiliang Yuan , James Dynes , Andrew James Shields
发明人： Zhiliang Yuan , James Dynes , Andrew James Shields
CPC分类号： H04B10/70 , H04J14/0282 , H04L9/0855
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US08755687B2
公开(公告)日：2014-06-17
申请号：US13476816
申请日：2012-05-21
IPC分类号： H04B10/00
CPC分类号： H04L7/0008 , H04B10/70 , H04L9/0852
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US08553884B2
公开(公告)日：2013-10-08
申请号：US13421045
申请日：2012-03-15
IPC分类号： H04K1/00
CPC分类号： H04B10/70
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US08295485B2
公开(公告)日：2012-10-23
申请号：US11530358
申请日：2006-09-08
IPC分类号： H04K1/00
CPC分类号： H04B10/70 , H04L9/0858
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20100111305A1
公开(公告)日：2010-05-06
申请号：US12529495
申请日：2008-02-29
CPC分类号： G01J1/44 , G01J2001/442 , G01J2001/4466 , H04B10/697
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US07460669B2
公开(公告)日：2008-12-02
申请号：US09983700
申请日：2001-10-25
IPC分类号： H04L9/00
CPC分类号： H04L9/0858 , H04L2209/34
摘要： An encoding method, decoding method and a communication method using single photons where information is directly encoded into each photon. In one embodiment at least two out of the three parameters of phases, polarization, and energy are used to encode information. In another embodiment, three or more non-orthogonal states with respect to each parameter are used. A further embodiment is also described which uses selective grouping of the results in order to more clearly detect the presence of an eavesdropper. Apparatus capable of performing the methods are also provided.
摘要翻译： 使用单个光子的编码方法，解码方法和通信方法，其中信息被直接编码到每个光子中。 在一个实施例中，相位，极化和能量的三个参数中的至少两个被用于对信息进行编码。 在另一个实施例中，使用关于每个参数的三个或更多个非正交状态。 还描述了另一实施例，其使用结果的选择性分组，以便更清楚地检测窃听者的存在。 还提供了能够执行这些方法的装置。
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公开(公告)号：US08841596B2
公开(公告)日：2014-09-23
申请号：US12906624
申请日：2010-10-18
CPC分类号： G01J1/44
摘要： 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.
摘要翻译： 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。
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