Active stabilization of a one-way QKD system
    1.
    发明授权
    Active stabilization of a one-way QKD system 失效
    主动稳定单向QKD系统

    公开(公告)号:US07587049B2

    公开(公告)日:2009-09-08

    申请号:US10580959

    申请日:2004-12-08

    IPC分类号: H04L9/00 H04K1/00 G01B9/02

    CPC分类号: H04L9/0852

    摘要: A one-way stabilized QKD system (10) that utilizes a control signal (CS) and a quantum signal (QS) that travel the same path through the system from a first QKD station (Alice) to a second QKD station (Bob). The control signal is detected at Bob and used to stabilize Bob's side of the interferometer against phase variations. The system also includes a polarization control stage (200) that controls (e.g., scrambles) the polarization of the photons entering Bob. The combination of the polarization control and the active phase stabilization of the interferometer at Bob's end allows for the stable operation of the interferometer when used as part of a one-way QKD system.

    摘要翻译: 单向稳定的QKD系统(10)利用从第一QKD站(Alice)到第二QKD站(Bob)的行进通过系统的相同路径的控制信号(CS)和量子信号(QS)。 在Bob处检测控制信号,用于稳定干涉仪的鲍勃侧面以防止相位变化。 该系统还包括控制(例如,加扰)进入Bob的光子的偏振的偏振控制级(200)。 在Bob端的偏振控制和干涉仪的有源相位稳定的组合允许当用作单向QKD系统的一部分时干涉仪的稳定操作。

    Active stabilization of a one-way qkd system
    2.
    发明申请
    Active stabilization of a one-way qkd system 失效
    主动稳定单向qkd系统

    公开(公告)号:US20070110241A1

    公开(公告)日:2007-05-17

    申请号:US10580959

    申请日:2004-12-08

    CPC分类号: H04L9/0852

    摘要: A one-way stabilized QKD system (10) that utilizes a control signal (CS) and a quantum signal (QS) that travel the same path through the system from a first QKD station (Alice) to a second QKD station (Bob). The control signal is detected at Bob and used to stabilize Bob's side of the interferometer against phase variations. The system also includes a polarization control stage (200) that controls (e.g., scrambles) the polarization of the photons entering Bob. The combination of the polarization control and the active phase stabilization of the interferometer at Bob's end allows for the stable operation of the interferometer when used as part of a one-way QKD system.

    摘要翻译: 单向稳定的QKD系统(10)利用从第一QKD站(Alice)到第二QKD站(Bob)的行进通过系统的相同路径的控制信号(CS)和量子信号(QS)。 在Bob处检测控制信号,用于稳定干涉仪的鲍勃侧面以防止相位变化。 该系统还包括控制(例如,加扰)进入Bob的光子的偏振的偏振控制级(200)。 在Bob端的偏振控制和干涉仪的有源相位稳定的组合允许当用作单向QKD系统的一部分时干涉仪的稳定操作。

    Integrated adaptive chromatic dispersion/polarization mode dispersion compensation system
    3.
    发明授权
    Integrated adaptive chromatic dispersion/polarization mode dispersion compensation system 有权
    集成自适应色散/偏振模色散补偿系统

    公开(公告)号:US06889011B1

    公开(公告)日:2005-05-03

    申请号:US10004332

    申请日:2001-11-02

    CPC分类号: H04B10/2519 H04B10/2572

    摘要: The present invention is directed to an integrated system for performing dispersion compensation on wavelength channels in WDM or DWDM transmissions. The system includes a tunable integrated dispersion compensation module that performs chromatic dispersion compensation and polarization mode dispersion compensation on each of the wavelength channels in the transmission. Feedback is used to adjust the tunable integrated dispersion compensation module until receiver performance is optimized.

    摘要翻译: 本发明涉及一种用于在WDM或DWDM传输中对波长信道进行色散补偿的集成系统。 该系统包括可调整体色散补偿模块,其在透射中的每个波长通道上执行色散补偿和偏振模色散补偿。 反馈用于调整可调谐集成色散补偿模块,直到接收机性能得到优化。

    Method And Apparatus For Generating Optical Pulses For Qkd
    4.
    发明申请
    Method And Apparatus For Generating Optical Pulses For Qkd 审中-公开
    Qkd生成光脉冲的方法和装置

    公开(公告)号:US20080130888A1

    公开(公告)日:2008-06-05

    申请号:US11662560

    申请日:2005-09-12

    IPC分类号: H04K1/00 H04L9/00

    CPC分类号: H04L9/0852

    摘要: Methods and apparatus for generating coherent optical pulses (P1′, P2′) in a quantum key distribution (QKD) station (Alice-N) of a QKD system (10) without using an optical fiber interferometer (12) are disclosed. The method includes generating a continuous wave (CW) beam of coherent radiation (R) having a coherence length LC and modulating the CW beam within the coherence length. The invention obviates the need for an interferometer loop to form multiple optical pulses from a single optical pulse, thereby obviating the need for thermal stabilization of the interferometer loop at the QKD station Alice-N.

    摘要翻译: 公开了在不使用光纤干涉仪(12)的QKD系统(10)的量子密钥分配(QKD)站(Alice-N)中产生相干光脉冲(P 1',P 2')的方法和装置。 该方法包括产生具有相干长度LC的相干辐射(R)的连续波(CW)波束并在相干长度内调制CW波束。 本发明消除了对干涉仪环路从单个光脉冲形成多个光脉冲的需要,从而避免了在QKD站Alice-N处的干涉仪环路的热稳定性的需要。

    Diffraction grating with electrically controlled periodicity
    5.
    发明授权
    Diffraction grating with electrically controlled periodicity 失效
    具有电控周期性的衍射光栅

    公开(公告)号:US06188462B1

    公开(公告)日:2001-02-13

    申请号:US09145506

    申请日:1998-09-02

    IPC分类号: G02F1133

    CPC分类号: G02F1/13718 G02F2201/305

    摘要: The present invention is directed to liquid crystal diffraction gratings with electrically controlled periodicity. An electrical field is applied to liquid crystal device wherein the liquid crystals align to form a diffraction grating. The period of the diffraction grating is varied by changing the applied electrical field. The diffraction grating therefore has a period that can be varied by an electrical field.

    摘要翻译: 本发明涉及具有电控周期性的液晶衍射光栅。 将电场施加到其中液晶对准以形成衍射光栅的液晶器件。 通过改变施加的电场来改变衍射光栅的周期。 因此,衍射光栅具有可以通过电场改变的周期。