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1. 发明申请

US20060093376A1 System and method for providing two-way communication of quantum signals, timing signals, and public data 有权
标题翻译：用于提供量子信号，定时信号和公共数据的双向通信的系统和方法
公开(公告)号：US20060093376A1
公开(公告)日：2006-05-04
申请号：US10978973
申请日：2004-11-01
申请人： J. Mitchell , Harry Vig , Anton Zavriyev , Alexei Trifonov
发明人： J. Mitchell , Harry Vig , Anton Zavriyev , Alexei Trifonov
IPC分类号： H04B10/04
CPC分类号： H04B10/70
摘要： A system and method for providing two-way communication of quantum signals, timing signals, and public data is provided. Generally, the system contains a first public data transceiver capable of transmitting and receiving public data in accordance with a predefined timing sequence, a first optical modulator/demodulator capable of transmitting and receiving timing signals in accordance with the predefined timing sequence, a first quantum transceiver capable of transmitting and receiving quantum signals in accordance with the predefined timing sequence, and a first controller connected to the first public data transceiver, the first optical modulator/demodulator, and the first quantum transceiver. The first controller is capable of controlling the transmission of the public data, the timing signals, and the quantum signals in accordance with the predefined timing sequence.
摘要翻译：提供了一种用于提供量子信号，定时信号和公共数据的双向通信的系统和方法。通常，该系统包括能够根据预定义的定时序列发送和接收公共数据的第一公共数据收发器，能够根据预定定时序列发送和接收定时信号的第一光调制器/解调器，第一量子收发器能够根据预定义的定时顺序发送和接收量子信号，以及连接到第一公共数据收发器，第一光调制器/解调器和第一量子收发器的第一控制器。第一控制器能够根据预定义的时序顺序来控制公共数据，定时信号和量子信号的传输。

2. 发明申请

US20060088159A1 Constant modulation for enhancing QKD security 有权
标题翻译：用于增强QKD安全性的恒定调制
公开(公告)号：US20060088159A1
公开(公告)日：2006-04-27
申请号：US10970043
申请日：2004-10-21
申请人： J. Mitchell , Harry Vig , Jonathan Young , Alexei Trifonov
发明人： J. Mitchell , Harry Vig , Jonathan Young , Alexei Trifonov
IPC分类号： H04L9/00
CPC分类号： H04L9/0858
摘要： A method of improving the security of a QKD system is disclosed. The method includes randomly modulating the modulator in a QKD station both within the gating interval and outside of the gating interval, while recording those modulations made during the gating interval. Such continuous modulation prevents an eavesdropper from assuming that the modulations correspond directly to the modulation of a qubit. Thus, an eavesdropper (Eve) has the additional and daunting task of determining which modulations correspond to actual qubit modulations before she can begin to extract any information from detected modulation states of the modulator.
摘要翻译：公开了一种提高QKD系统安全性的方法。该方法包括在门控间隔内和选通间隔外部随机调制QKD站中的调制器，同时记录在门控间隔期间进行的调制。这种连续调制防止窃听者假设调制直接对应于量子位的调制。因此，窃听者（Eve）在开始从调制器的检测到的调制状态开始提取任何信息之前，具有确定哪些调制对应于实际量子调制的附加且艰巨的任务。

3. 发明授权

US07606371B2 Two-way QKD system with active compensation 失效
标题翻译：双向QKD系统具有主动补偿功能
公开(公告)号：US07606371B2
公开(公告)日：2009-10-20
申请号：US10876847
申请日：2004-06-25
申请人： Anton Zavriyev , Alexei Trifonov , Michael LaGasse
发明人： Anton Zavriyev , Alexei Trifonov , Michael LaGasse
IPC分类号： H04L9/08
CPC分类号： H04L9/0852
摘要： A two-way actively stabilized QKD system that utilizes control signals and quantum signals is disclosed. Because the quantum signals do not traverse the same optical path through the system, signal collisions in the phase modulator are avoided. This allows the system to have a higher transmission rate than a two-way system in which the quantum signals traverse the same optical path. Also, the active stabilization process, which is based on maintaining a fixed relationship between an intensity ratio of interfered control signals, is greatly simplified by having the interferometer loops located all in one QKD station.
摘要翻译：公开了一种利用控制信号和量子信号的双向主动稳定QKD系统。因为量子信号不穿过通过系统的相同光路，所以避免了相位调制器中的信号碰撞。这允许系统具有比量子信号穿过相同光路的双向系统更高的传输速率。此外，通过使干涉仪环路全部位于一个QKD站中，基于保持干扰控制信号的强度比之间的固定关系的主动稳定处理被大大简化。

4. 发明申请

US20070098174A1 Narrow-band single-photon source and QKD system using same 有权
标题翻译：窄带单光子源和QKD系统使用相同
公开(公告)号：US20070098174A1
公开(公告)日：2007-05-03
申请号：US11260705
申请日：2005-10-27
申请人： Alexei Trifonov , Anton Zavriyev
发明人： Alexei Trifonov , Anton Zavriyev
IPC分类号： H04K1/00
CPC分类号： H04L9/0852
摘要： A narrow-band single-photon source (10) is disclosed, along with a QKD system (200) using same. The single-photon source is based on spontaneous parametric downconversion that generates signal and idler photons (PS and PI) as an entangled photon pair. Narrow-band signal photons are generated by selectively narrow-band-filtering the idler photons. This results in a non-local filtering of the signal photons due to the time-energy entanglement of the photon pair. Subsequent detection of the filtered idler photon establishes the narrow-band signal photon. The narrow-band single-photon source is particularly useful in a QKD system, wherein the narrow-band signal photons are used as quantum signals to mitigate the adverse effect of chromatic dispersion on QKD system performance.
摘要翻译：公开了窄带单光子源（10）以及使用其的QKD系统（200）。单光子源基于自发参数下变频，其产生作为纠缠光子对的信号和惰性光子（PS和PI）。通过选择性窄带滤波惰性光子来产生窄带信号光子。这导致由于光子对的时间能量纠缠而导致的信号光子的非局部滤波。随后检测到的滤波后的惰性光子建立了窄带信号光子。窄带单光子源在QKD系统中特别有用，其中窄带信号光子被用作量子信号以减轻色散对QKD系统性能的不利影响。

5. 发明申请

US20060023885A1 Two-way QKD system with backscattering suppression 审中-公开
标题翻译：双向QKD系统具有后向散射抑制
公开(公告)号：US20060023885A1
公开(公告)日：2006-02-02
申请号：US10900491
申请日：2004-07-28
申请人： Alexei Trifonov , Anton Zavriyev
发明人： Alexei Trifonov , Anton Zavriyev
IPC分类号： H04K1/00
CPC分类号： H04B10/70 , H04L9/0858
摘要： Systems and methods for suppressing the unwanted detection of backscattered light in a two-way quantum key distribution (QKD) system is disclosed. The system includes a first QKD station that has two or more laser sources that emit light at different wavelengths, and corresponding two or more sets of detectors. In a two-way QKD system, backscattered light is typically generated in an optical fiber link connecting the first and second QKD stations by the relatively strong outgoing optical pulses. To prevent the backscattered light from interfering with the detection of the weak optical pulses returned from the second QKD station to the first station, a controller sequentially activates different light sources, and also sequentially activates the different sets of detectors.
摘要翻译：公开了用于抑制双向量子密钥分发（QKD）系统中的背散射光的不期望的检测的系统和方法。该系统包括具有发射不同波长的光的两个或更多个激光源的第一QKD站和相应的两组或更多组检测器。在双向QKD系统中，反向散射光通常在通过相对强的输出光脉冲连接第一和第二QKD站的光纤链路中产生。为了防止反向散射光干扰从第二QKD站返回到第一站的弱光脉冲的检测，控制器顺序地激活不同的光源，并且还顺序激活不同的检测器组。

6. 发明申请

US20050135627A1 Two-way QKD system with active compensation 失效
标题翻译：双向QKD系统具有主动补偿功能
公开(公告)号：US20050135627A1
公开(公告)日：2005-06-23
申请号：US10876847
申请日：2004-06-25
申请人： Anton Zavriyev , Alexei Trifonov , Michael Lagasse
发明人： Anton Zavriyev , Alexei Trifonov , Michael Lagasse
IPC分类号： G02F1/335 , H04K1/00 , H04L9/08
CPC分类号： H04L9/0852
摘要： A two-way actively stabilized QKD system that utilizes control signals and quantum signals is disclosed. Because the quantum signals do not traverse the same optical path through the system, signal collisions in the phase modulator are avoided. This allows the system to have a higher transmission rate than a two-way system in which the quantum signals traverse the same optical path. Also, the active stabilization process, which is based on maintaining a fixed relationship between an intensity ratio of interfered control signals, is greatly simplified by having the interferometer loops located all in one QKD station.
摘要翻译：公开了一种利用控制信号和量子信号的双向主动稳定QKD系统。因为量子信号不穿过通过系统的相同光路，所以避免了相位调制器中的信号碰撞。这允许系统具有比量子信号穿过相同光路的双向系统更高的传输速率。此外，通过使干涉仪环路全部位于一个QKD站中，基于保持干扰控制信号的强度比之间的固定关系的主动稳定处理被大大简化。

7. 发明授权

US07437081B2 System and method for providing two-way communication of quantum signals, timing signals, and public data 有权
标题翻译：用于提供量子信号，定时信号和公共数据的双向通信的系统和方法
公开(公告)号：US07437081B2
公开(公告)日：2008-10-14
申请号：US10978973
申请日：2004-11-01
申请人： J. Howell Mitchell , Harry N. Vig , Anton Zavriyev , Alexei Trifonov
发明人： J. Howell Mitchell , Harry N. Vig , Anton Zavriyev , Alexei Trifonov
IPC分类号： H04B10/00 , H04K1/00
CPC分类号： H04B10/70
摘要： A system and method for providing two-way communication of quantum signals, timing signals, and public data is provided. Generally, the system contains a first public data transceiver capable of transmitting and receiving public data in accordance with a predefined timing sequence, a first optical modulator/demodulator capable of transmitting and receiving timing signals in accordance with the predefined timing sequence, a first quantum transceiver capable of transmitting and receiving quantum signals in accordance with the predefined timing sequence, and a first controller connected to the first public data transceiver, the first optical modulator/demodulator, and the first quantum transceiver. The first controller is capable of controlling the transmission of the public data, the timing signals, and the quantum signals in accordance with the predefined timing sequence.
摘要翻译：提供了一种用于提供量子信号，定时信号和公共数据的双向通信的系统和方法。通常，该系统包括能够根据预定义的定时序列发送和接收公共数据的第一公共数据收发器，能够根据预定定时序列发送和接收定时信号的第一光调制器/解调器，第一量子收发器能够根据预定义的定时顺序发送和接收量子信号，以及连接到第一公共数据收发器，第一光调制器/解调器和第一量子收发器的第一控制器。第一控制器能够根据预定义的时序顺序来控制公共数据，定时信号和量子信号的传输。

8. 发明授权

US07570365B2 Compact tunable high-efficiency entangled photon source 失效
标题翻译：紧凑型可调谐高效纠缠光子源
公开(公告)号：US07570365B2
公开(公告)日：2009-08-04
申请号：US11899359
申请日：2007-09-05
申请人： Alexei Trifonov , Anton Zavriyev
发明人： Alexei Trifonov , Anton Zavriyev
IPC分类号： G01B9/02
CPC分类号： G02F1/395 , G02F2001/212 , G02F2001/213 , G02F2203/15
摘要： A compact, tunable, high-efficiency entangled photon source system that utilizes first and second periodically poled waveguides rather than bulk media in order to decrease the required pump power by up to several orders of magnitude. The first and second waveguides are arranged in respective arms of an interferometer. Each waveguide has partially reflecting ends, and are each placed on the Z-face of respective periodically poled KTP or LiNBO3 crystals to form respective first and second Fabry-Perot cavities. All waves (pump, idler, and signal) are co-polarized along the z-axis of the crystals. One of the waveguides is followed by a polarization rotator (shown as a half-wave-plate in the Figures) rotating the idler and signal wave polarization by 90 degrees. The outputs from two interferometer arms are combined by a polarization beam combiner and then split by a wavelength multiplexer into two spatially separated time-bin and polarization entangled beams. Another light source, a single frequency stabilized C-band laser (stabilization laser) is used to synchronize cavities spectral modes and phase-lock their outputs.
摘要翻译：一种紧凑的，可调谐的高效纠缠光子源系统，其利用第一和第二周期性极化的波导而不是大容量介质，以将所需的泵浦功率降低多达几个数量级。第一和第二波导布置在干涉仪的相应臂中。每个波导具有部分反射端，并且各自放置在相应周期性极化的KTP或LiNBO 3晶体的Z面上，以形成相应的第一和第二法布里 - 珀罗腔。所有波（泵，惰轮和信号）沿着晶体的z轴共同偏振。其中一个波导之后是偏置旋转器（在图中以半波形表示）将惰轮和信号波偏振旋转90度。来自两个干涉仪臂的输出由偏振光束组合器组合，然后由波长多路复用器分离成两个空间分离的时间仓和极化纠缠光束。使用另一个光源，单频稳定C波段激光（稳定激光）来同步腔光谱模式并锁相其输出。

9. 发明授权

US07359514B2 Narrow-band single-photon source and QKD system using same 有权
标题翻译：窄带单光子源和QKD系统使用相同
公开(公告)号：US07359514B2
公开(公告)日：2008-04-15
申请号：US11260705
申请日：2005-10-27
申请人： Alexei Trifonov , Anton Zavriyev
发明人： Alexei Trifonov , Anton Zavriyev
IPC分类号： H04L9/00 , H04L9/08
CPC分类号： H04L9/0852
摘要： A narrow-band single-photon source (10) is disclosed, along with a QKD system (200) using same. The single-photon source is based on spontaneous parametric downconversion that generates signal and idler photons (PS and PI) as an entangled photon pair. Narrow-band signal photons are generated by selectively narrow-band-filtering the idler photons. This results in a non-local filtering of the signal photons due to the time-energy entanglement of the photon pair. Subsequent detection of the filtered idler photon establishes the narrow-band signal photon. The narrow-band single-photon source is particularly useful in a QKD system, wherein the narrow-band signal photons are used as quantum signals to mitigate the adverse effect of chromatic dispersion on QKD system performance.
摘要翻译：公开了窄带单光子源（10）以及使用其的QKD系统（200）。单光子源基于自发参数下变频，其产生作为纠缠光子对的信号和惰性光子（PS和PI）。通过选择性窄带滤波惰性光子来产生窄带信号光子。这导致由于光子对的时间能量纠缠而导致的信号光子的非局部滤波。随后检测到的滤波后的惰性光子建立了窄带信号光子。窄带单光子源在QKD系统中特别有用，其中窄带信号光子被用作量子信号以减轻色散对QKD系统性能的不利影响。

10. 发明申请

US20080063015A1 Compact tunable high-efficiency entangled photon source 失效
标题翻译：紧凑型可调谐高效纠缠光子源
公开(公告)号：US20080063015A1
公开(公告)日：2008-03-13
申请号：US11899359
申请日：2007-09-05
申请人： Alexei Trifonov , Anton Zavriyev
发明人： Alexei Trifonov , Anton Zavriyev
IPC分类号： H01S3/098
CPC分类号： G02F1/395 , G02F2001/212 , G02F2001/213 , G02F2203/15
摘要： A compact, tunable, high-efficiency entangled photon source system that utilizes first and second periodically poled waveguides rather than bulk media in order to decrease the required pump power by up to several orders of magnitude. The first and second waveguides are arranged in respective arms of an interferometer. Each waveguide has partially reflecting ends, and are each placed on the Z-face of respective periodically poled KTP or LiNBO3 crystals to form respective first and second Fabry-Perot cavities. All waves (pump, idler, and signal) are co-polarized along the z-axis of the crystals. One of the waveguides is followed by a polarization rotator (shown as a half-wave-plate in the Figures) rotating the idler and signal wave polarization by 90 degrees. The outputs from two interferometer arms are combined by a polarization beam combiner and then split by a wavelength multiplexer into two spatially separated time-bin and polarization entangled beams. Another light source, a single frequency stabilized C-band laser (stabilization laser) is used to synchronize cavities spectral modes and phase-lock their outputs.
摘要翻译：一种紧凑的，可调谐的高效纠缠光子源系统，其利用第一和第二周期性极化的波导而不是大容量介质，以将所需的泵浦功率降低多达几个数量级。第一和第二波导布置在干涉仪的相应臂中。每个波导具有部分反射端，并且各自放置在相应周期性极化的KTP或LiNBO 3晶体的Z面上，以形成相应的第一和第二法布里 - 珀罗腔。所有波（泵，惰轮和信号）沿着晶体的z轴共同偏振。其中一个波导之后是偏置旋转器（在图中以半波形表示）将惰轮和信号波偏振旋转90度。来自两个干涉仪臂的输出由偏振光束组合器组合，然后由波长多路复用器分离成两个空间分离的时间仓和极化纠缠光束。使用另一个光源，单频稳定C波段激光（稳定激光）来同步腔光谱模式并锁相其输出。

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