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1. 发明授权

US11153668B2 Bandwidth provisioning for an entangled photon system 有权
公开(公告)号：US11153668B2
公开(公告)日：2021-10-19
申请号：US16779771
申请日：2020-02-03
申请人： AT&T Intellectual Property I, L.P.
发明人： Michael Brodsky , Cristian Antonelli , Jungmi Oh
IPC分类号： H04Q11/00 , H04B10/70 , H04L9/08
摘要： A quantum key distribution system is deployed in an optical fiber network transporting classical data traffic. A source of entangled photon pairs is used to generate quantum keys. Classical data traffic is typically transported over channels in the C-band. If a pair of channels for transport of quantum data is available within the C-band, then the source of entangled photon pairs is tuned to emit in a pair of channels in the C-band. If a pair of channels for transport of quantum data is not available within the C-band, then the source of entangled photon pairs is tuned to emit in a pair of channels in a combined S-band and L-band. When a periodically-poled lithium niobate waveguide pumped with a laser is used for the source of entangled photon pairs, the output spectral properties are tuned by varying the temperature of the waveguide.

2. 发明授权

US09772223B2 Characterization of single-photon detectors using a continuous wave laser source 有权
公开(公告)号：US09772223B2
公开(公告)日：2017-09-26
申请号：US14719975
申请日：2015-05-22
申请人： AT&T Intellectual Property I, L.P.
发明人： Michael Brodsky , Cristian Antonelli , Jungmi Oh
IPC分类号： G01J1/44 , G01J1/08 , G01J1/42
CPC分类号： G01J1/44 , G01J1/08 , G01J1/42 , G01J2001/442 , G01J2001/4466
摘要： Operational parameters of a single-photon detector are determined with a continuous wave laser source. At a fixed trigger, a dark count probability and a series of count probabilities at different optical powers are determined. A particular optical power is selected by using a wide-range variable attenuator to attenuate the optical power of the continuous wave laser. The dark count probability and the count probabilities are determined for different trigger rates. The operational parameters include efficiency, afterpulsing constant, and detrap time. The operational parameters are computed by fitting the computed dark count probabilities and count probabilities to a user-defined relationship.

3. 发明申请

US20180227651A1 Bandwidth Provisioning for an Entangled Photon System 审中-公开
公开(公告)号：US20180227651A1
公开(公告)日：2018-08-09
申请号：US15944389
申请日：2018-04-03
申请人： AT&T Intellectual Property I, L.P.
发明人： Michael Brodsky , Cristian Antonelli , Jungmi Oh
IPC分类号： H04Q11/00 , H04L9/08 , H04B10/70
摘要： A quantum key distribution system is deployed in an optical fiber network transporting classical data traffic. A source of entangled photon pairs is used to generate quantum keys. Classical data traffic is typically transported over channels in the C-band. If a pair of channels for transport of quantum data is available within the C-band, then the source of entangled photon pairs is tuned to emit in a pair of channels in the C-band. If a pair of channels for transport of quantum data is not available within the C-band, then the source of entangled photon pairs is tuned to emit in a pair of channels in a combined S-band and L-band. When a periodically-poled lithium niobate waveguide pumped with a laser is used for the source of entangled photon pairs, the output spectral properties are tuned by varying the temperature of the waveguide.

4. 发明申请

US20200177977A1 BANDWIDTH PROVISIONING FOR AN ENTANGLED PHOTON SYSTEM 审中-公开
公开(公告)号：US20200177977A1
公开(公告)日：2020-06-04
申请号：US16779771
申请日：2020-02-03
申请人： AT&T Intellectual Property I, L.P.
发明人： Michael Brodsky , Cristian Antonelli , Jungmi Oh
IPC分类号： H04Q11/00 , H04L9/08 , H04B10/70
摘要： A quantum key distribution system is deployed in an optical fiber network transporting classical data traffic. A source of entangled photon pairs is used to generate quantum keys. Classical data traffic is typically transported over channels in the C-band. If a pair of channels for transport of quantum data is available within the C-band, then the source of entangled photon pairs is tuned to emit in a pair of channels in the C-band. If a pair of channels for transport of quantum data is not available within the C-band, then the source of entangled photon pairs is tuned to emit in a pair of channels in a combined S-band and L-band. When a periodically-poled lithium niobate waveguide pumped with a laser is used for the source of entangled photon pairs, the output spectral properties are tuned by varying the temperature of the waveguide.

5. 发明申请

US20170356797A1 Characterization of Single-Photon Detectors Using a Continuous Wave Laser Source 审中-公开
公开(公告)号：US20170356797A1
公开(公告)日：2017-12-14
申请号：US15689682
申请日：2017-08-29
申请人： AT&T Intellectual Property I, L.P.
发明人： Michael Brodsky , Cristian Antonelli , Jungmi Oh
IPC分类号： G01J1/44 , G01J1/42 , G01J1/08
CPC分类号： G01J1/44 , G01J1/08 , G01J1/42 , G01J2001/442 , G01J2001/4466
摘要： Operational parameters of a single-photon detector are determined with a continuous wave laser source. At a fixed trigger, a dark count probability and a series of count probabilities at different optical powers are determined. A particular optical power is selected by using a wide-range variable attenuator to attenuate the optical power of the continuous wave laser. The dark count probability and the count probabilities are determined for different trigger rates. The operational parameters include efficiency, afterpulsing constant, and detrap time. The operational parameters are computed by fitting the computed dark count probabilities and count probabilities to a user-defined relationship.

6. 发明授权

US10595102B2 Bandwidth provisioning for an entangled photon system 有权
公开(公告)号：US10595102B2
公开(公告)日：2020-03-17
申请号：US15944389
申请日：2018-04-03
申请人： AT&T Intellectual Property I, L.P.
发明人： Michael Brodsky , Cristian Antonelli , Jungmi Oh
IPC分类号： H04Q11/00 , H04B10/70 , H04L9/08
摘要： A quantum key distribution system is deployed in an optical fiber network transporting classical data traffic. A source of entangled photon pairs is used to generate quantum keys. Classical data traffic is typically transported over channels in the C-band. If a pair of channels for transport of quantum data is available within the C-band, then the source of entangled photon pairs is tuned to emit in a pair of channels in the C-band. If a pair of channels for transport of quantum data is not available within the C-band, then the source of entangled photon pairs is tuned to emit in a pair of channels in a combined S-band and L-band. When a periodically-poled lithium niobate waveguide pumped with a laser is used for the source of entangled photon pairs, the output spectral properties are tuned by varying the temperature of the waveguide.

7. 发明授权

US09967637B2 Bandwidth provisioning for an entangled photon system 有权
公开(公告)号：US09967637B2
公开(公告)日：2018-05-08
申请号：US14146307
申请日：2014-01-02
申请人： AT&T Intellectual Property I, L.P.
发明人： Michael Brodsky , Cristian Antonelli , Jungmi Oh
IPC分类号： H04B10/70 , H04Q11/00 , H04L9/08
CPC分类号： H04Q11/0005 , H04B10/70 , H04L9/0852
摘要： A quantum key distribution system is deployed in an optical fiber network transporting classical data traffic. A source of entangled photon pairs is used to generate quantum keys. Classical data traffic is typically transported over channels in the C-band. If a pair of channels for transport of quantum data is available within the C-band, then the source of entangled photon pairs is tuned to emit in a pair of channels in the C-band. If a pair of channels for transport of quantum data is not available within the C-band, then the source of entangled photon pairs is tuned to emit in a pair of channels in a combined S-band and L-band. When a periodically-poled lithium niobate waveguide pumped with a laser is used for the source of entangled photon pairs, the output spectral properties are tuned by varying the temperature of the waveguide.

8. 发明申请

US20150253187A1 Characterization of Single-Photon Detectors Using a Continuous Wave Laser Source 有权
标题翻译：使用连续波激光源的单光子检测器的表征
公开(公告)号：US20150253187A1
公开(公告)日：2015-09-10
申请号：US14719975
申请日：2015-05-22
申请人： AT&T Intellectual Property I, L.P.
发明人： Michael Brodsky , Cristian Antonelli , Jungmi Oh
IPC分类号： G01J1/44 , G01J1/08
CPC分类号： G01J1/44 , G01J1/08 , G01J1/42 , G01J2001/442 , G01J2001/4466
摘要： Operational parameters of a single-photon detector are determined with a continuous wave laser source. At a fixed trigger, a dark count probability and a series of count probabilities at different optical powers are determined. A particular optical power is selected by using a wide-range variable attenuator to attenuate the optical power of the continuous wave laser. The dark count probability and the count probabilities are determined for different trigger rates. The operational parameters include efficiency, afterpulsing constant, and detrap time. The operational parameters are computed by fitting the computed dark count probabilities and count probabilities to a user-defined relationship.
摘要翻译：用连续波激光源确定单光子检测器的工作参数。在固定的触发条件下，确定不同光功率下的暗计数概率和一系列计数概率。通过使用宽范围可变衰减器来选择特定的光功率来衰减连续波激光器的光功率。为不同的触发速率确定暗计数概率和计数概率。操作参数包括效率，脉冲后常数和去除时间。通过将计算的暗计数概率和计数概率拟合到用户定义的关系来计算操作参数。

9. 发明申请

US20140119729A1 Bandwidth Provisioning for an Entangled Photon System 有权
标题翻译：纠缠光子系统的带宽配置
公开(公告)号：US20140119729A1
公开(公告)日：2014-05-01
申请号：US14146307
申请日：2014-01-02
申请人： AT&T Intellectual Property I, L.P.
发明人： Michael Brodsky , Cristian Antonelli , Jungmi Oh
IPC分类号： H04L9/08 , H04Q11/00
CPC分类号： H04Q11/0005 , H04B10/70 , H04L9/0852
摘要： A quantum key distribution system is deployed in an optical fiber network transporting classical data traffic. A source of entangled photon pairs is used to generate quantum keys. Classical data traffic is typically transported over channels in the C-band. If a pair of channels for transport of quantum data is available within the C-band, then the source of entangled photon pairs is tuned to emit in a pair of channels in the C-band. If a pair of channels for transport of quantum data is not available within the C-band, then the source of entangled photon pairs is tuned to emit in a pair of channels in a combined S-band and L-band. When a periodically-poled lithium niobate waveguide pumped with a laser is used for the source of entangled photon pairs, the output spectral properties are tuned by varying the temperature of the waveguide.
摘要翻译：量子密钥分发系统部署在传输经典数据流量的光纤网络中。纠缠光子对的来源被用来产生量子密钥。典型数据流量通常在C波段的信道上传输。如果用于传输量子数据的一对通道在C波段内可用，则纠缠的光子对的源被调谐以在C波段中的一对通道中发射。如果用于传输量子数据的一对通道在C波段内不可用，则纠缠的光子对的源被调谐以在组合的S波段和L波段中的一对通道中发射。当用激光泵浦的周期性极化的铌酸锂波导用于纠缠光子对的源时，通过改变波导的温度来调节输出光谱性质。

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