Optical switching based on dipole induced transparency
    2.
    发明授权
    Optical switching based on dipole induced transparency 有权
    基于偶极诱导透明度的光开关

    公开(公告)号:US07848603B2

    公开(公告)日:2010-12-07

    申请号:US12590728

    申请日:2009-11-12

    IPC分类号: G02B6/26 G02B6/42 G02F1/035

    摘要: A normally opaque waveguide interacting with a drop-filter cavity can be switched to a transparent state when the drop filter is also coupled to a dipole. This dipole induced transparency may be obtained even when the vacuum Rabi frequency of the dipole is much less than the cavity decay rate. The condition for transparency is a large Purcell factor. Dipole induced transparency can be used in quantum repeaters for long distance quantum communication.

    摘要翻译: 当液滴滤波器也耦合到偶极子时,与液滴滤光器腔相互作用的通常不透明的波导可以被切换到透明状态。 即使当偶极子的真空拉比频率远小于腔衰减速率时,也可以获得偶极诱导的透明度。 透明度的条件是一个很大的Purcell因子。 偶极诱导的透明度可用于长距离量子通信的量子中继器。

    Optical switching based on dipole induced transparency

    公开(公告)号:US20100135612A1

    公开(公告)日:2010-06-03

    申请号:US12590728

    申请日:2009-11-12

    IPC分类号: G02B6/42 G02B6/26

    摘要: A normally opaque waveguide interacting with a drop-filter cavity can be switched to a transparent state when the drop filter is also coupled to a dipole. This dipole induced transparency may be obtained even when the vacuum Rabi frequency of the dipole is much less than the cavity decay rate. The condition for transparency is a large Purcell factor. Dipole induced transparency can be used in quantum repeaters for long distance quantum communication.

    Quantum key distribution system and method using regulated single-photon source
    4.
    发明授权
    Quantum key distribution system and method using regulated single-photon source 失效
    量子密钥分配系统和方法采用调制单光子源

    公开(公告)号:US07346166B2

    公开(公告)日:2008-03-18

    申请号:US10712761

    申请日:2003-11-12

    IPC分类号: H04L9/00

    CPC分类号: H04L9/0858

    摘要: A system and method for quantum key distribution uses a regulated single-photon source to sequentially generate a first photon and a second photon separated by a time interval Δt. The two photons are directed through a beam splitter that directs each photon to one of two transmission lines, which lead to two respective receivers. When one of the photons arrives at a receiver, it passes through an interferometer. One arm of the interferometer has a path length longer than the other arm by an amount equivalent to a photon time delay of Δt. The photon is then detected in one of three time slots by one of two single-photon detectors associated with each of the two interferometer outputs. Due to quantum-mechanical entanglement in phase and time between the two photons, the receivers can determine a secret quantum key bit value from their measurements of the time slots in which the photons arrived, or of the detectors where the photons arrived.

    摘要翻译: 用于量子密钥分配的系统和方法使用调节的单光子源来顺序地产生由时间间隔Deltat分离的第一光子和第二光子。 两个光子被引导通过分束器,其将每个光子引导到两个传输线中的一个,其导致两个相应的接收器。 当一个光子到达接收器时,它通过一个干涉仪。 干涉仪的一个臂具有比另一个臂长的路径长度等于Deltat的光子时间延迟的量。 然后通过与两个干涉仪输出中的每一个相关联的两个单光子检测器中的一个检测三个时隙之一中的光子。 由于两个光子之间的相位和时间的量子力学纠缠,接收器可以根据其光子到达的时隙或者光子到达的检测器的测量来确定秘密的量子密钥位值。

    Dipole induced transparency drop-filter cavity-waveguide system
    5.
    发明授权
    Dipole induced transparency drop-filter cavity-waveguide system 失效
    偶极诱导透明液滴滤光腔腔波导系统

    公开(公告)号:US07630604B2

    公开(公告)日:2009-12-08

    申请号:US11977244

    申请日:2007-10-24

    IPC分类号: G02B6/26 G02B6/42 G02F1/035

    摘要: A normally opaque waveguide interacting with a drop-filter cavity can be switched to a transparent state when the drop filter is also coupled to a dipole. This dipole induced transparency may be obtained even when the vacuum Rabi frequency of the dipole is much less than the cavity decay rate. The condition for transparency is a large Purcell factor. Dipole induced transparency can be used in quantum repeaters for long distance quantum communication.

    摘要翻译: 当液滴滤波器也耦合到偶极子时,与液滴滤光器腔相互作用的通常不透明的波导可以被切换到透明状态。 即使当偶极子的真空拉比频率远小于腔衰减速率时,也可以获得偶极诱导的透明度。 透明度的条件是一个很大的Purcell因子。 偶极诱导的透明度可用于长距离量子通信的量子中继器。

    Quantum key distribution system and method using regulated single-photon source
    6.
    发明申请
    Quantum key distribution system and method using regulated single-photon source 失效
    量子密钥分配系统和方法采用调制单光子源

    公开(公告)号:US20050094818A1

    公开(公告)日:2005-05-05

    申请号:US10712761

    申请日:2003-11-12

    IPC分类号: H04L9/12 H04L9/08 H04L9/00

    CPC分类号: H04L9/0858

    摘要: A system and method for quantum key distribution uses a regulated single-photon source to sequentially generate a first photon and a second photon separated by a time interval Δt. The two photons are directed through a beam splitter that directs each photon to one of two transmission lines, which lead to two respective receivers. When one of the photons arrives at a receiver, it passes through an interferometer. One arm of the interferometer has a path length longer than the other arm by an amount equivalent to a photon time delay of Δt. The photon is then detected in one of three time slots by one of two single-photon detectors associated with each of the two interferometer outputs. Due to quantum-mechanical entanglement in phase and time between the two photons, the receivers can determine a secret quantum key bit value from their measurements of the time slots in which the photons arrived, or of the detectors where the photons arrived.

    摘要翻译: 用于量子密钥分配的系统和方法使用调节的单光子源来顺序地产生由时间间隔Deltat分离的第一光子和第二光子。 两个光子被引导通过分束器,其将每个光子引导到两个传输线中的一个,其导致两个相应的接收器。 当一个光子到达接收器时,它通过一个干涉仪。 干涉仪的一个臂具有比另一个臂长的路径长度等于Deltat的光子时间延迟的量。 然后通过与两个干涉仪输出中的每一个相关联的两个单光子检测器中的一个检测三个时隙之一中的光子。 由于两个光子之间的相位和时间的量子力学纠缠,接收器可以根据其光子到达的时隙或者光子到达的检测器的测量来确定秘密量子密钥位值。

    Differential phase shift keying quantum key distribution
    8.
    发明授权
    Differential phase shift keying quantum key distribution 失效
    差分相移键控量子密钥分布

    公开(公告)号:US08675876B2

    公开(公告)日:2014-03-18

    申请号:US12084197

    申请日:2005-11-04

    IPC分类号: H04L9/08

    CPC分类号: H04L9/0858

    摘要: Differential phase shift (DPS) quantum key distribution (QKD) is provided, where the average number of photons per transmitted pulse is predetermined such that the secure key generation rate is maximal or nearly maximal, given other system parameters. These parameters include detector quantum efficiency, channel transmittance and pulse spacing (or clock rate). Additional system parameters that can optionally be included in the optimization include baseline error rate, sifted key error rate, detector dead time, detector dark count rate, and error correction algorithm performance factor. The security analysis leading to these results is based on consideration of a hybrid beam splitter and intercept-resend attack.

    摘要翻译: 提供了差分相移(DPS)量子密钥分布(QKD),其中给定其他系统参数的情况下,每个发射脉冲的平均光子数是预定的,使得安全密钥生成速率最大或接近最大。 这些参数包括检测器量子效率,通道透射率和脉冲间隔(或时钟频率)。 可选地包括在优化中的附加系统参数包括基线误差率,筛选关键误差率,检测器死区时间,检测器暗计数率和误差校正算法性能因子。 导致这些结果的安全性分析基于混合分束器和拦截重发攻击的考虑。

    Differential Phase Shift Keying Quantum Key Distribution
    9.
    发明申请
    Differential Phase Shift Keying Quantum Key Distribution 失效
    差分相移键控量子密钥分布

    公开(公告)号:US20100034390A1

    公开(公告)日:2010-02-11

    申请号:US12084197

    申请日:2005-11-04

    IPC分类号: H04L9/08 H04K1/00

    CPC分类号: H04L9/0858

    摘要: Differential phase shift (DPS) quantum key distribution (QKD) is provided, where the average number of photons per transmitted pulse is predetermined such that the secure key generation rate is maximal or nearly maximal, given other system parameters. These parameters include detector quantum efficiency, channel transmittance and pulse spacing (or clock rate). Additional system parameters that can optionally be included in the optimization include baseline error rate, sifted key error rate, detector dead time, detector dark count rate, and error correction algorithm performance factor. The security analysis leading to these results is based on consideration of a hybrid beam splitter and intercept-resend attack.

    摘要翻译: 提供了差分相移(DPS)量子密钥分布(QKD),其中给定其他系统参数的情况下,每个发射脉冲的平均光子数是预定的,使得安全密钥生成速率最大或接近最大。 这些参数包括检测器量子效率,通道透射率和脉冲间隔(或时钟频率)。 可选地包括在优化中的附加系统参数包括基线误差率,筛选关键误差率,检测器死区时间,检测器暗计数率和误差校正算法性能因子。 导致这些结果的安全性分析基于混合分束器和拦截重发攻击的考虑。

    Dipole induced transparency drop-filter cavity-waveguide system
    10.
    发明申请
    Dipole induced transparency drop-filter cavity-waveguide system 失效
    偶极诱导透明液滴滤光腔腔波导系统

    公开(公告)号:US20080101800A1

    公开(公告)日:2008-05-01

    申请号:US11977244

    申请日:2007-10-24

    IPC分类号: H04B10/00 G02F1/035

    摘要: A normally opaque waveguide interacting with a drop-filter cavity can be switched to a transparent state when the drop filter is also coupled to a dipole. This dipole induced transparency may be obtained even when the vacuum Rabi frequency of the dipole is much less than the cavity decay rate. The condition for transparency is a large Purcell factor. Dipole induced transparency can be used in quantum repeaters for long distance quantum communication.

    摘要翻译: 当液滴滤波器也耦合到偶极子时,与液滴滤光器腔相互作用的通常不透明的波导可以被切换到透明状态。 即使当偶极子的真空拉比频率远小于腔衰减速率时,也可以获得偶极诱导的透明度。 透明度的条件是一个很大的Purcell因子。 偶极诱导的透明度可用于长距离量子通信的量子中继器。