Secure quantum optical communications system and method
    1.
    发明授权
    Secure quantum optical communications system and method 有权
    安全量子光通信系统及方法

    公开(公告)号:US07822342B1

    公开(公告)日:2010-10-26

    申请号:US11725718

    申请日:2007-03-20

    CPC classification number: H04L9/0852 H04B10/70

    Abstract: An optical communication system is provided. In one embodiment, a source creates a multiplicity of photon pairs, with each photon pair comprising a first photon and a second photon. The first photon is sent to a transmitter, and either remains in the transmitter or is transmitted by the transmitter to a receiver. The second photon is sent to the receiver. Data is decoded by determining a polarization direction and a time of detection of any photon pairs detected at the receiver.

    Abstract translation: 提供光通信系统。 在一个实施例中,源产生多个光子对,每个光子对包括第一光子和第二光子。 第一个光子被发送到发射机,并且保留在发射机中,或者由发射机发射到接收机。 第二个光子被发送到接收器。 通过确定在接收器处检测到的任何光子对的偏振方向和检测时间来解码数据。

    Quantum dense coding system
    2.
    发明授权
    Quantum dense coding system 失效
    量子密集编码系统

    公开(公告)号:US07330653B1

    公开(公告)日:2008-02-12

    申请号:US10989139

    申请日:2004-11-15

    CPC classification number: H04B10/70

    Abstract: A Quantum Dense Coding System. The system includes a source, a transmitter and a receiver. The source is capable of down-converting a pump photon into a signal photon and an idler photon and outputting probability amplitudes, the signal photon and the idler photon, wherein the signal photon and the idler photon have an equal probability of outputting to a transmission channel and a reception channel. The transmitter is capable of receiving probability amplitudes, signal photons and idler photons from the transmission channel; and selectively changing vertical and horizontal phases of probability amplitudes of signal photons and idler photons; and outputting probability amplitudes, signal photons and idler photons. The receiver is capable of receiving probability amplitudes, signal photons and idler photons from the reception channel and the transmitter; and identifying vertical and horizontal phase changes created by the transmitter. A method for the system is also described.

    Abstract translation: 量子密集编码系统。 该系统包括源,发射器和接收器。 源能够将泵浦光子下变频成信号光子和惰性光子并输出概率振幅,信号光子和惰性光子,其中信号光子和惰性光子具有输出到传输信道的相等概率 和接收频道。 发射机能够从传输信道接收概率幅度,信号光子和惰性光子; 并选择性地改变信号光子和空载光子的概率幅度的垂直和水平相位; 并输出概率幅度,信号光子和惰轮光子。 接收机能够从接收信道和发射机接收概率幅度,信号光子和惰性光子; 并识别发射机产生的垂直和水平相位变化。 还描述了该系统的方法。

    Quantum optical communications system
    3.
    发明授权
    Quantum optical communications system 失效
    量子光通信系统

    公开(公告)号:US07289738B1

    公开(公告)日:2007-10-30

    申请号:US10705799

    申请日:2003-11-10

    CPC classification number: H04B10/70

    Abstract: A communication system employs quantum entanglement by projecting photons through a nonlinear crystal. Some become parametrically down-converted into signal and idler photon pairs. The signal photons are projected to a receiver and the idler photons to a transmitter. The transmitter operator can alter the time width and a majority of the center wavelengths of the idler photons via a collapse event in the transmitter. Because of quantum entanglement, a corresponding change in the time width and center wavelengths of the signal photons as received at the receiver results. The purposeful causation of the collapse event or a lack of such purposeful causation can be used for binary communication. In addition, the sensing of an atmospheric condition may be performed by equating changes in received signal photon characteristics with changes in collapse conditions in the atmosphere.

    Abstract translation: 通信系统通过投射光子通过非线性晶体来采用量子纠缠。 有些变为参数下变换成信号和惰性光子对。 信号光子投射到接收器,惰轮光子传送到发射器。 发射机操作员可以通过发射机中的倒塌事件改变惰轮光子的时间宽度和大部分中心波长。 由于量子纠缠,在接收器处接收的信号光子的时间宽度和中心波长的相应变化导致。 崩溃事件的有目的的原因或缺乏这种有目的的因果关系可以用于二进制通信。 此外,大气条件的感测可以通过将接收的信号光子特性的变化与大气中的崩溃条件的变化相等来执行。

    Secure optical communication system
    4.
    发明授权
    Secure optical communication system 有权
    安全光通信系统

    公开(公告)号:US08068740B1

    公开(公告)日:2011-11-29

    申请号:US12182106

    申请日:2008-07-29

    CPC classification number: H04B10/70 H04B10/85 H04L9/0858

    Abstract: In various embodiments, a secure optical communication system is disclosed. Such a system may include a photon-pair generation circuit configured to generate pairs of photons with each photon pair including a first-channel photon and a second-channel photon, a transmitting circuit configured to receive first-channel photons, and modulate the first-channel photons according to a stream of data using a first optical circulator to produce first-modulated photons, and a receiving circuit configured to receive second-channel photons, pass the second-channel photons through a complementary optical circulator to produce second modulated photons, and detect relative timing between the first-modulated photons and the second modulated photons to recover the stream of data.

    Abstract translation: 在各种实施例中,公开了一种安全光通信系统。 这样的系统可以包括:光子对生成电路,被配置为生成成对光子,每个光子对包括第一通道光子和第二通道光子;发射电路,被配置为接收第一通道光子,并且调制第一通道光子, 根据使用第一光循环器的数据流产生第一调制光子的通道光子,以及被配置为接收第二通道光子的接收电路,使第二通道光子穿过互补光循环器以产生第二调制光子,以及 检测第一调制光子和第二调制光子之间的相对定时以恢复数据流。

    Minimum transmitted photon quantum optical communications system
    5.
    发明授权
    Minimum transmitted photon quantum optical communications system 失效
    最小透射光子量子光通信系统

    公开(公告)号:US07302187B1

    公开(公告)日:2007-11-27

    申请号:US11009845

    申请日:2004-12-08

    CPC classification number: H04B10/85

    Abstract: A system parametrically down-converts a photon into a pair of first and second quantum-entangled photons. A transmitter is coupled to receive the first photon and includes an irreversible collapse event device for collapsing the quantum-entangled state of each photon in the pair. The collapse is caused by attempting to detect the first photon at the transmitter. Because of quantum-entanglement, collapse of the first photon collapses the second photon of the pair. The transmitter can also be used to not cause the collapse. A receiver includes polarization detectors to detect whether the transmitter has collapsed or left uncollapsed the quantum-entangled state of the photon pair. Causing or not causing the collapse can be used for communication. Every down-converted photon can be used for communication, even though few of the photons actually leave the source and reach the transmitter. This allows communication with a minimal number of transmitted photons.

    Abstract translation: 一个系统将光子参数地下变换成一对第一和第二量子纠缠的光子。 发射机被耦合以接收第一光子并且包括用于折叠该对中的每个光子的量子纠缠状态的不可逆的崩溃事件装置。 崩溃是由于尝试检测发射机上的第一个光子造成的。 由于量子纠缠,第一光子的塌陷使该对的第二个光子塌陷。 变送器也可用于不导致塌陷。 接收器包括偏振检测器,用于检测发射器是否已折叠或未被光滑对齐的量子纠缠状态。 导致或不导致崩溃可以用于通信。 每个下变频光子都可以用于通信,即使很少的光子实际上离开源并到达发射器。 这允许与最少数量的传输光子进行通信。

    Compact birefringent spectrometer with electrically adjustable passband
    6.
    发明授权
    Compact birefringent spectrometer with electrically adjustable passband 失效
    紧凑型双折射光谱仪,具有电气可调通带

    公开(公告)号:US06833917B1

    公开(公告)日:2004-12-21

    申请号:US10653788

    申请日:2003-09-03

    Inventor: Mark W. Roberts

    CPC classification number: G01J3/28 G01J3/0256 G01J3/0259

    Abstract: An electrically adjustable spectrometer uses collimated, P-polarized light made incident on a surface of an optically transparent liquid crystal input material. The material transmits the light to a boundary surface between the input material and an output optically transparent material. The input material is preferably highly dispersive, making Snell component values at the boundary surface markedly different for different wavelengths. The output material is preferably of low dispersion and high birefringence. Only one wavelength at the boundary surface has a Snell component value tangent to its corresponding index surface in the output section. Within this section, the ray vector for this wavelength is parallel to the boundary surface. Because optical energy propagates in the ray vector direction, only the narrow range of wavelengths having ray vectors substantially parallel to the boundary surface reach an output of the device. This range comprises the passband of the spectrometer and is adjustable electrically.

    Abstract translation: 电可调光谱仪使用入射在光学透明液晶输入材料的表面上的准直的P偏振光。 该材料将光传输到输入材料和输出光学透明材料之间的边界表面。 输入材料优选是高度分散的,使得在不同波长处的边界表面上的Snell分量值显着不同。 输出材料优选为低分散性和高双折射性。 在边界面上只有一个波长的Snell分量值与输出部分的相对应的折射面相切。 在该部分内,该波长的射线矢量平行于边界面。 因为光能在射线向量方向上传播,所以只有具有基本上平行于边界表面的射线矢量的窄波长范围达到器件的输出。 该范围包括光谱仪的通带,可电气调节。

    Synthetic aperture radar systems and methods
    7.
    发明授权
    Synthetic aperture radar systems and methods 失效
    合成孔径雷达系统和方法

    公开(公告)号:US07589662B1

    公开(公告)日:2009-09-15

    申请号:US11765557

    申请日:2007-06-20

    CPC classification number: G01S13/9035 G01S2013/9058

    Abstract: A method of determining a radar receiver path, comprising the steps of: obtaining a transmitter position; obtaining a target position and velocity; obtaining a radar receiver position and velocity; determining a transmitter aspect angle gradient, a transmitter aspect angle time derivative and a transmitter co-state vector time derivative; determining a target aspect angle gradient, a target aspect angle time derivative and a target co-state vector time derivative; generating a radar platform heading variable, and a group of differential variables over a defined time span; inputting the group of differential variables into a differential equation solver; receiving a group of possible headings for the radar receiver path; and finding an optimum radar receiver path from the group of possible headings.

    Abstract translation: 一种确定雷达接收机路径的方法,包括以下步骤:获得发射机位置; 获得目标位置和速度; 获得雷达接收机的位置和速度; 确定发射机角度梯度,发射机角度时间导数和发射机协同向量时间导数; 确定目标方位角梯度,目标方位角时间导数和目标同态向量时间导数; 在定义的时间跨度上生成雷达平台标题变量和一组差分变量; 将差分变量组输入微分方程求解器; 接收雷达接收机路径的一组可能的标题; 并从一组可能的标题中找到最佳的雷达接收器路径。

    Broadband antennas
    8.
    发明授权
    Broadband antennas 失效
    宽带天线

    公开(公告)号:US06859189B1

    公开(公告)日:2005-02-22

    申请号:US10086042

    申请日:2002-02-26

    CPC classification number: H01Q9/16 H01Q1/28 H01Q1/34 H01Q9/14

    Abstract: The fast switching multifunction antenna of the present invention is a variable length antenna that may be switched to provide the equivalent function of a broadband antenna. The variable length antenna quasi-continuously transmits or receives signals at a plurality of frequencies by changing the effective length of the antenna using a variety of switching mechanisms. The present invention may comprise a plurality of antenna segments, a plurality of selectively actuable switches for interconnecting the antenna segments, and a switching mechanism operably coupled to the plurality of selectively actuable switches for switching them at a switching rate that is greater than twice the highest frequency to be transmitted or received. The switching rate will be fast enough to allow the antenna to sample the highest frequency and all of the required lower frequencies within the desired frequency range without the loss of information at any frequency. However, the switching rate is slow enough to allow sampling of the frequency at each antenna length before the next antenna length is activated.

    Abstract translation: 本发明的快速开关多功能天线是可以切换为提供宽带天线的等效功能的可变长度天线。 可变长度天线通过使用各种切换机制改变天线的有效长度来准确地连续地以多个频率发送或接收信号。 本发明可以包括多个天线段,用于互连天线段的多个可选择性致动的开关,以及可操作地耦合到多个可选择性致动的开关的开关机构,用于以大于两倍的开关速率切换它们 要发送或接收的频率。 开关速率将足够快以允许天线在所需频率范围内采样最高频率和所有所需的较低频率,而不会以任何频率丢失信息。 然而,切换速率足够慢,以允许在下一个天线长度被激活之前在每个天线长度处对频率进行采样。

    Compact birefringent spectrometer
    9.
    发明授权
    Compact birefringent spectrometer 失效
    紧凑型双折射光谱仪

    公开(公告)号:US06618142B1

    公开(公告)日:2003-09-09

    申请号:US09891704

    申请日:2001-06-26

    Inventor: Mark W. Roberts

    CPC classification number: G01J3/28 G01J3/0256 G01J3/0259

    Abstract: A spectrometer uses collimated, P-polarized light made incident on a surface of an optically transparent material at angle &thgr;INC. The material transmits the light which reaches a boundary surface between the input material and an output optically transparent material. The input material is preferably highly dispersive, making Snell component values at the boundary surface markedly different for different wavelengths. The output material is preferably of low dispersion and high birefringence. Only one wavelength at the boundary surface has a Snell component value tangent to its corresponding index surface in the output section. Within this section, the ray vector for this wavelength is parallel to the boundary surface. Because optical energy propagates in the ray vector direction, only the narrow range of wavelengths having ray vectors substantially parallel to the boundary surface reach an output surface of the device. This narrow range of wavelengths comprises the passband incident on a detector.

    Abstract translation: 光谱仪使用以角度θINC入射在光学透明材料的表面上的准直的P偏振光。 该材料透射到达输入材料和输出光学透明材料之间的边界表面的光。 输入材料优选是高度分散的,使得在不同波长处的边界表面上的Snell分量值显着不同。 输出材料优选为低分散性和高双折射性。 在边界面上只有一个波长的Snell分量值与输出部分的相对应的折射面相切。 在该部分内,该波长的射线矢量平行于边界面。 因为光能在光线向量方向传播,所以只有具有基本上平行于边界表面的射线矢量的窄波长范围到达装置的输出表面。 这种窄的波长范围包括入射到检测器上的通带。

Patent Agency Ranking