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公开(公告)号：US20120039617A1
公开(公告)日：2012-02-16
申请号：US13260095
申请日：2009-07-31
CPC分类号： H04B10/1141 , H04B10/70 , H04L9/0858 , H04L2209/805
摘要： A handheld device (310) includes: a transmitter or receiver (410) of a signal beam (340) for quantum key distribution; and a source (412, 414) of alignment beams (312, 314, 316, 318) that diverge from each other in a pattern that matches sensors (322, 324, 326, 328) on a station (320) containing a receiver or transmitter (430) for the quantum key distribution. The alignment beams from the handheld device (310) are of sufficient intensity to produce on the station visible spots that facilitate manual alignment of the handheld device (310). The station (320) can measure a position and a direction of respective alignment beams and dynamically steer the signal beam (340) according to the measurements.
摘要翻译： 手持设备（310）包括：用于量子密钥分发的信号光束（340）的发射器或接收器（410）; 以及以包含接收器的站（320）上匹配传感器（322,324,326,328）的图案彼此分开的对准光束（312,314,316,318）的源（412,414），或 发射机（430）用于量子密钥分发。 来自手持设备（310）的对准光束具有足够的强度，以在所述工作台上产生便于手持设备（310）的手动对准的可见光点。 站（320）可以测量各个对准束的位置和方向，并根据测量动态地引导信号光束（340）。
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公开(公告)号：US08774638B2
公开(公告)日：2014-07-08
申请号：US13260095
申请日：2009-07-31
IPC分类号： H04B10/00
CPC分类号： H04B10/1141 , H04B10/70 , H04L9/0858 , H04L2209/805
摘要： A handheld device includes: a transmitter or receiver of a signal beam for quantum key distribution; and a source of alignment beams that diverge from each other in a pattern that matches sensors on a station containing a receiver or transmitter for the quantum key distribution. The alignment beams from the handheld device are of sufficient intensity to produce on the station visible spots that facilitate manual alignment of the handheld device. The station can measure a position and a direction of respective alignment beams and dynamically steer the signal beam according to the measurements.
摘要翻译： 手持设备包括：用于量子密钥分发的信号光束的发射器或接收器; 以及与包含用于量子密钥分发的接收机或发射机的站上的传感器相匹配的模式彼此发散的对准射束源。 来自手持设备的对准束具有足够的强度，以在站上产生便于手持设备的手动对准的可见点。 站可以测量各个对准束的位置和方向，并根据测量动态地引导信号光束。
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公开(公告)号：US09494419B2
公开(公告)日：2016-11-15
申请号：US13260064
申请日：2009-07-31
摘要： A direction sensor (200) includes sensor cells (215) that respectively correspond to different directions. Each of the sensor cells (215) includes a light sensor (130, 140) and a grating (120) that couples incident light into the light sensor (130, 140) when the incident light has a specific wavelength and is incident on the grating (120) along the direction corresponding to the sensor cell (215).
摘要翻译： 方向传感器（200）包括分别对应于不同方向的传感器单元（215）。 每个传感器单元（215）包括当入射光具有特定波长并入射在光栅上时将入射光耦合到光传感器（130,140）中的光传感器（130,140）和光栅（120） （120）沿着对应于传感器单元（215）的方向。
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公开(公告)号：US20120120390A1
公开(公告)日：2012-05-17
申请号：US13260064
申请日：2009-07-31
IPC分类号： G01C1/00
摘要： A direction sensor (200) includes sensor cells (215) that respectively correspond to different directions. Each of the sensor cells (215) includes a light sensor (130, 140) and a grating (120) that couples incident light into the light sensor (130, 140) when the incident light has a specific wavelength and is incident on the grating (120) along the direction corresponding to the sensor cell (215).
摘要翻译： 方向传感器（200）包括分别对应于不同方向的传感器单元（215）。 每个传感器单元（215）包括当入射光具有特定波长并且入射在光栅上时将入射光耦合到光传感器（130,140）中的光传感器（130,140）和光栅（120） （120）沿着对应于传感器单元（215）的方向。
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公开(公告)号：US20090310784A1
公开(公告)日：2009-12-17
申请号：US12469571
申请日：2009-05-20
CPC分类号： H04B10/1141 , H04L9/0852
摘要： QKD receiving apparatus is provided with an alignment-correction system for correcting misalignment of a quantum signal received at an optical port of the apparatus relative to a quantum-signal detector of the receiving apparatus. The alignment-correction system comprises a misalignment measuring subsystem for making multiple different misalignment measures, and a misalignment compensation subsystem for adjusting the relative alignment of the quantum signal and quantum-signal detector in dependence on the misalignment measures made. The misalignment measuring subsystem comprises an alignment-beam source, an alignment-beam detector arrangement, and optical components for guiding an alignment beam from the alignment-beam source to the optical port, and for guiding the alignment beam, after external retro-reflection at a cooperating QKD transmitting apparatus from the optical port to the alignment-beam detector arrangement.
摘要翻译： QKD接收装置设置有对准校正系统，用于校正在装置的光口处接收的量子信号相对于接收装置的量子信号检测器的未对准。 对准校正系统包括用于进行多个不同对准测量的未对准测量子系统，以及用于根据所做的不对准测量来调整量子信号和量子信号检测器的相对对准的未对准补偿子系统。 不对准测量子系统包括对准束源，对准束检测器装置和用于将对准光束从对准光束源引导到光学端口的光学部件，并且用于在外部后向反射之后引导对准光束 从光端口到对准束检测器装置的协作QKD发送装置。
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公开(公告)号：US08170214B2
公开(公告)日：2012-05-01
申请号：US12286854
申请日：2008-10-01
申请人： Keith Harrison , William Munro , Timothy Spiller , Michael Tan , Joanna Duligall , Radu Ionicioiu
发明人： Keith Harrison , William Munro , Timothy Spiller , Michael Tan , Joanna Duligall , Radu Ionicioiu
IPC分类号： H04L29/06
CPC分类号： H04B10/114 , H04B10/70 , H04L9/0858
摘要： In order to facilitate alignment of a QKD transmitter and QKD receiver, the transmitter is provided with a retro-reflector for returning to the receiver a photon beam originating at the latter. The transmitter is arranged to polarization modulate the retro-reflected beam. The transmitter is provided both with an intensity detector for generating an indication of retro-reflected photon intensity, and an intensity-dependent controller for controlling the QKD transmitter in dependence on the detected photon intensity. In one embodiment, this control involves aborting operation of the QKD transmitter upon an unexpectedly high photon intensity being detected; in another embodiment, the intensity indication is used to control the attenuation of the retro-reflected beam so as stabilize the average retro-reflected photon count per unit time.
摘要翻译： 为了便于QKD发射机和QKD接收机的对准，发射机设有一个回射器，用于将源自后者的光子束返回给接收机。 发射机被布置成偏振调制后向反射光束。 发射机都具有用于产生反射光子强度的指示的强度检测器，以及依赖于检测到的光子强度来控制QKD发射器的强度依赖控制器。 在一个实施例中，该控制涉及在检测到意外高的光子强度时中止QKD发射机的操作; 在另一个实施例中，强度指示用于控制反射光束的衰减，以便稳定每单位时间的平均反射光子数。
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公开(公告)号：US20100080394A1
公开(公告)日：2010-04-01
申请号：US12286854
申请日：2008-10-01
申请人： Keith Harrison , William Munro , Timothy Spiller , Michael Tan , Joanna Duligall , Radu Ionicioiu
发明人： Keith Harrison , William Munro , Timothy Spiller , Michael Tan , Joanna Duligall , Radu Ionicioiu
CPC分类号： H04B10/114 , H04B10/70 , H04L9/0858
摘要： In order to facilitate alignment of a QKD transmitter and QKD receiver, the transmitter is provided with a retro-reflector for returning to the receiver a photon beam originating at the latter. The transmitter is arranged to polarization modulate the retro-reflected beam. The transmitter is provided both with an intensity detector for generating an indication of retro-reflected photon intensity, and an intensity-dependent controller for controlling the QKD transmitter in dependence on the detected photon intensity. In one embodiment, this control involves aborting operation of the QKD transmitter upon an unexpectedly high photon intensity being detected; in another embodiment, the intensity indication is used to control the attenuation of the retro-reflected beam so as stabilize the average retro-reflected photon count per unit time.
摘要翻译： 为了便于QKD发射机和QKD接收机的对准，发射机设有一个回射器，用于将源自后者的光子束返回给接收机。 发射机被布置成偏振调制后向反射光束。 发射机都具有用于产生反射光子强度的指示的强度检测器，以及依赖于检测到的光子强度来控制QKD发射器的强度依赖控制器。 在一个实施例中，该控制涉及在检测到意外高的光子强度时中止QKD发射机的操作; 在另一个实施例中，强度指示用于控制反射光束的衰减，以便稳定每单位时间的平均反射光子数。
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公开(公告)号：US20070025551A1
公开(公告)日：2007-02-01
申请号：US11454624
申请日：2006-06-16
申请人： Keith Harrison , William Munro , John Rarity , Joanna Duligall
发明人： Keith Harrison , William Munro , John Rarity , Joanna Duligall
IPC分类号： H04K1/00
CPC分类号： H04B10/116 , G06F7/588 , G06Q20/367 , H04B10/1125 , H04B10/1143 , H04L9/0858 , H04L2209/80
摘要： A quantum key distribution (QKD) system is provided that makes use of a quantum signal of polarized photons and comprises a QKD device and complimentary QKD apparatus. The QKD device has a QKD subsystem comprising one of a QKD transmitter and receiver for inter-working with a complimentary QKD receiver or transmitter of said apparatus. The device also has an alignment subsystem arranged to wirelessly interact with the QKD apparatus to enable generation of user feedback and/or adjustment signals for use in aligning the QKD transmitter and receiver such that the QKD transmitter is pointing at the QKD receiver and the polarization axes of the QKD transmitter and receiver are aligned.
摘要翻译： 提供了一种量子密钥分配（QKD）系统，其利用偏振光子的量子信号并且包括QKD器件和互补QKD器件。 QKD设备具有QKD子系统，其包括QKD发射机和接收机之一，用于与所述设备的互补QKD接收机或发射机进行互操作。 该设备还具有配置为与QKD设备无线地交互的对准子系统，以便能够产生用于对齐QKD发射机和接收机的用户反馈和/或调整信号，使得QKD发射机指向QKD接收机和偏振轴 的QKD发射器和接收器对齐。
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