公开(公告)号：US08233631B2

公开(公告)日：2012-07-31

申请号：US12798974

申请日：2010-04-15

申请人： Audrius Berzanskis

发明人： Audrius Berzanskis

IPC分类号： A61B7/04

CPC分类号： G06F19/3418 ,  G06F19/00 ,  G10L15/26 ,  G16H10/60

摘要： A medical voice data system includes a hand-held recording device, an electronic information carrier (EIC), and a host station. The hand-held device records medical information from a user that is examining a person in an extreme environment such as battlefield or disaster area. EICs are stored within a housing interior and can be dispensed therefrom by the user. Recording electronics within the housing interior are operably connected to at least one of the EICs. A microphone is operably connected to the recording electronics to record on a EIC medical information about the injured person. The EIC is configured to be attached to and travel with the person as they are evacuated so that the recorded medical information is immediately available to medical personnel at a care center via the host station. The medical voice data system may also employ a wireless EIC. A host station is used to receive and process the recorded information and convert it to text-based medical record.

摘要翻译： 医疗语音数据系统包括手持式记录装置，电子信息载体（EIC）和主机站。 手持设备记录正在检查诸如战场或灾区等极端环境中的人的用户的医疗信息。 EIC存储在壳体内部并且可以由用户从其中分配。 在壳体内部的记录电子装置可操作地连接到至少一个EIC。 麦克风可操作地连接到记录电子装置，以记录关于受伤者的EIC医疗信息。 EIC配置为在人员撤离时与人员连接并行进，以便通过主机站立即向医护人员提供所记录的医疗信息。 医疗语音数据系统也可以使用无线EIC。 主站用于接收和处理记录的信息并将其转换为基于文本的医疗记录。

公开(公告)号：US08073336B2

公开(公告)日：2011-12-06

申请号：US12223308

申请日：2007-01-31

申请人： Alexei Trifonov

发明人： Alexei Trifonov

IPC分类号： H04L9/00 ,  H04K3/00

CPC分类号： H04B10/70 ,  H04L9/0852

摘要： Entanglement-based QKD systems and methods with active phase tracking and stabilization are disclosed wherein pairs of coherent photons at a first wavelength are generated. Second harmonic generation and spontaneous parametric downconversion are used to generate from the pairs of coherent photons entangled pairs of photons having the first wavelength. Relative phase delays of the entangled photons are tracked using reference optical signals. Classical detectors detect the reference signals while single-photon detectors and a control unit generate a phase-correction signal that maintains the relative phases of phase-delay loops via adjustable phase-delay elements.

摘要翻译： 公开了基于纠缠的QKD系统和具有有源相位跟踪和稳定的方法，其中产生了第一波长的相干光子对。 二次谐波产生和自发参数下变换用于从具有第一波长的光子对缠结的相干光子对中产生。 使用参考光信号跟踪缠结光子的相对相位延迟。 经典检测器检测参考信号，而单光子检测器和控制单元产生相位校正信号，通过可调相位延迟元件维持相位延迟回路的相对相位。

公开(公告)号：US08059964B2

公开(公告)日：2011-11-15

申请号：US11880340

申请日：2007-07-20

申请人： Harry Vig

发明人： Harry Vig

IPC分类号： H04L9/08 ,  H04L9/28

CPC分类号： H04L9/0852 ,  H04B10/70

摘要： A QKD system (10) having two QKD stations (Alice and Bob) optically coupled by an optical fiber link (FL), wherein Bob includes a variable timing delay arranged between Bob's controller (CB) and modulator (MB) or detector unit (40). A set-up and calibration procedure is performed wherein delay DL2 is adjusted until the timings for the modulator and detector unit (TSB and TS42, respectively) are established. Delay DL2 is then fixed so that the detector unit and modulator operate in a common timing mode that is not changed if the synchronization signal is changed. The timing TSS of the synchronization (sync) signals (SS) sent from Alice to Bob is adjusted to arrive at optimum system performance. Once the QKD system is in operation, because the sync signal can drift, the sync signal timing TSS is dithered maintain optimum QKD system performance. Since the modulator and detector unit timing is tied together, dithering the sync signal also dithers the modulator and detector unit together in a “common mode,” rather than varying the timing of each of these elements separately.

摘要翻译： 具有通过光纤链路（FL）光耦合的两个QKD站（Alice和Bob）的QKD系统（10），其中Bob包括布置在Bob的控制器（CB）和调制器（MB）或检测器单元（40）之间的可变定时延迟 ）。 执行设置和校准程序，其中调整延迟DL2直到建立调制器和检测器单元的时序（分别为TSB和TS42）。 延迟DL2然后固定，使得检测器单元和调制器以公共定时模式操作，如果同步信号改变则不改变。 从Alice发送到Bob的同步（同步）信号（SS）的定时TSS被调整以达到最佳的系统性能。 一旦QKD系统运行，由于同步信号可能漂移，同步信号定时TSS被抖动保持最佳的QKD系统性能。 由于调制器和检测器单元定时连接在一起，抖动同步信号也将调制器和检测器单元以“共模”方式进行抖动，而不是分别改变这些元件中的每个元件的时序。

公开(公告)号：US07899092B2

公开(公告)日：2011-03-01

申请号：US12154230

申请日：2008-05-21

申请人： Vladimir Malinovsky

发明人： Vladimir Malinovsky

IPC分类号： H01S3/30 ,  H01S3/10

CPC分类号： G02F3/026 ,  H01S3/0057 ,  H01S3/30

摘要： Apparatus and methods of performing fast single-qubit quantum gates using ultrafast femtosecond frequency chirped laser pulses are disclosed. The use of chirped pulses removes the demanding restrictions of prior art approaches and allows for the construction of fast quantum gates that operate at speeds on the of order several picoseconds. The apparatus includes two synchronized lasers (pump and Stokes) used to manipulate a qubit wave function in a select manner. Each laser system generates a train of optical pulses. Pulse pickers choose pump and Stokes pulses, which propagate though respective pulse shapers that apply necessary time-dependent phases. To achieve complete overlap between the pulses in time domain, necessary adjustments can be made by using an additional time delay line, which can be located in any path or in both paths.

摘要翻译： 公开了使用超快飞秒频率啁啾激光脉冲执行快速单量子门的装置和方法。 啁啾脉冲的使用消除了现有技术方法的苛刻限制，并且允许构造以几皮秒的速度工作的快速量子门。 该装置包括用于以选择的方式操纵量子位波函数的两个同步激光器（泵和斯托克斯）。 每个激光系统产生一列光脉冲。 脉冲选择器选择泵和斯托克斯脉冲，其通过各自的脉冲整形器传播，其中应用必要的时间相位相位。 为了实现时域中的脉冲之间的完全重叠，可以通过使用可以位于任何路径或两个路径中的附加时间延迟线进行必要的调整。

公开(公告)号：US07620182B2

公开(公告)日：2009-11-17

申请号：US10577625

申请日：2004-02-13

申请人： Audrius Berzanskis ,  Jonathan Young

发明人： Audrius Berzanskis ,  Jonathan Young

IPC分类号： H04K1/00 ,  H04L9/00

CPC分类号： H04L9/0858 ,  H04L9/065

摘要： A method for enhancing the security of a quantum key distribution (QKD) system having QKD stations Alice and Bob. The method includes encrypting key bits generated by a true random number generator (TRNG) and sent to a polarization or phase modulator to encode weak optical pulses as qubits to be shared between Alice and Bob. Key bit encryption is achieved by using a shared password and a stream cipher. Bob obtains at least a subset of the original key bits used by Alice by utilizing the same stream cipher and the shared password.

摘要翻译： 一种用于增强具有QKD站Alice和Bob的量子密钥分发（QKD）系统的安全性的方法。 该方法包括对由真实随机数发生器（TRNG）生成的密钥进行加密，并将其发送到偏振或相位调制器以将弱光脉冲编码为在Alice和Bob之间共享的量子位。 密钥位加密通过使用共享密码和流密码来实现。 Bob通过利用相同的流密码和共享密码获得Alice使用的原始密钥位的至少一个子集。

公开(公告)号：US07587049B2

公开(公告)日：2009-09-08

申请号：US10580959

申请日：2004-12-08

申请人： Alexel Trifonov ,  Anton Zavriyev ,  Darius Subacius

发明人： Alexel Trifonov ,  Anton Zavriyev ,  Darius Subacius

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。

公开(公告)号：US20090208220A1

公开(公告)日：2009-08-20

申请号：US12322379

申请日：2009-02-02

申请人： Michael J. Lagasse

发明人： Michael J. Lagasse

IPC分类号： H04B10/00

CPC分类号： H04B10/00 ,  H03K3/42 ,  H04B2210/006

摘要： Systems and methods for generating RF pulses that have a reduced phase error are disclosed. The systems are optical based and thus are highly linear, so that phase errors, including jitter, are significantly reduced as compared to electrical RF pulse generation systems and methods. The optical-based RF pulse generation methods includes generating laser light, imparting an envelope modulation to the laser light, imparting a carrier modulation to the laser light, and detecting the envelope-modulated and carrier-modulated light to form the electrical RF pulse. The electrical RF pulse can then be carried by a cable to an external device.

摘要翻译： 公开了用于产生具有减小的相位误差的RF脉冲的系统和方法。 这些系统是基于光学的，因此是高度线性的，使得与电RF脉冲发生系统和方法相比，包括抖动在内的相位误差显着降低。 基于光的RF脉冲产生方法包括产生激光，向激光施加包络调制，向激光施加载波调制，以及检测包络调制和载波调制的光以形成电RF脉冲。 然后可以通过电缆将电RF脉冲携带到外部设备。

公开(公告)号：US07492904B2

公开(公告)日：2009-02-17

申请号：US11110227

申请日：2005-04-20

申请人： Jonathan Young

发明人： Jonathan Young

IPC分类号： H04L9/00 ,  H04K1/00

CPC分类号： H04L9/0852

摘要： In a quantum key distribution (QKD) system, a method of autocalibrating the gating of a single-photon detector (SPD) unit is disclosed. The method includes exchanging photon signals (P1, P2) to establish a bit-error rate (BER). The method also includes performing a detector gate signal timing scan (314) that varies the signal arrival time (T) to establish an optimum arrival time (TMIN) corresponding to an optimum (e.g., minimum) BER. Detector gate signal timing dithering is then performed (318). This involves varying the detector gate signal arrival times about the optimum arrival time to ensure that the QKD system operates at or near an optimum BER.

摘要翻译： 在量子密钥分配（QKD）系统中，公开了一种自动校准单光子检测器（SPD）单元门控的方法。 该方法包括交换光子信号（P1，P2）以建立误码率（BER）。 该方法还包括执行检测器门信号定时扫描（314），其改变信号到达时间（T）以建立对应于最佳（例如最小）BER的最佳到达时间（TMIN）。 然后执行检测器门信号定时抖动（318）。 这涉及到关于最佳到达时间的检测器门信号到达时间的变化，以确保QKD系统在最佳BER或接近最佳BER时工作。

公开(公告)号：US20090034737A1

公开(公告)日：2009-02-05

申请号：US11881972

申请日：2007-07-30

申请人： Alexei Trifonov

发明人： Alexei Trifonov

IPC分类号： H04L9/08 ,  H04L9/22

CPC分类号： H04B10/85 ,  H04L9/0852

摘要： A single-photon source (SPS) (10) adapted to output single-photons (P3) at telecommunication wavelengths is disclosed. The SPS includes a color-centered diamond-nanocrystal (CCDN) single-photon source (SPS) (20) adapted to emit input photons (P1) having a wavelength A1 that lies outside of the main telecommunication wavelength bands. A non-linear optical medium (50) pumped using pump photons (P2) of wavelength A2 receives the input photons and optically downconverts them to output photons (P3) having a wavelength λ3>λ1 wherein λ3 is within a telecommunication wavelength band. An optical filter (60) arranged downstream of the non-linear optical medium substantially blocks the pump photons (P2) while allowing for the transmission of the output photons. A QKD system that uses the SPS source of the present invention is also disclosed.

摘要翻译： 公开了一种适于以通信波长输出单光子（P3）的单光子源（SPS）（10）。 SPS包括适于发射具有位于主通信波长带外的波长A1的输入光子（P1）的色心中心金刚石纳米晶体（CCDN）单光子源（SPS）（20）。 使用波长A2的泵浦光子（P2）泵浦的非线性光学介质（50）接收输入光子并将其光学下变频以输出波长λ3>λ1的光子（P3），其中λ3在通信波长带内。 布置在非线性光学介质下游的滤光器（60）基本上阻挡泵浦光子（P2），同时允许输出光子的传输。 还公开了使用本发明的SPS源的QKD系统。

公开(公告)号：US20090028340A1

公开(公告)日：2009-01-29

申请号：US11881550

申请日：2007-07-27

申请人： Alexel Trifonov

发明人： Alexel Trifonov

IPC分类号： H04L9/08

CPC分类号： G02F1/39 ,  G02F2001/3548 ,  H04B10/70

摘要： A robust, quickly tunable narrow-linewidth entangled photon source system based on Spontaneous Parametric Down Conversion (SPDC) of the pump light in periodically polled LiNbO3 (PPLN) waveguides. The photon source provides narrow-linewidth, entangled output photons having a wavelength in the telecom C-Band wavelength. To tailor the output spectrum of the output photons, the PPLN waveguide is arranged between two end waveguides having LiNbO3-embedded Bragg gratings, thereby forming a tunable Fabry-Perot cavity. The resulting narrow output linewidth of the output photons makes the system desirable for use in a long-distance quantum key distribution (QKD) system.

摘要翻译： 基于自发参数降频转换（SPDC）的鲁棒，快速可调窄线宽纠缠光子源系统，其定期轮询的LiNbO3（PPLN）波导中的泵浦光。 光子源提供具有在电信C波段波长中的波长的窄线宽，纠缠的输出光子。 为了调整输出光子的输出光谱，PPLN波导布置在具有LiNbO3嵌入布拉格光栅的两个端波导之间，从而形成可调的法布里 - 珀罗腔。 所产生的输出光子的窄输出线宽使得该系统期望用于长距离量子密钥分配（QKD）系统。