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公开(公告)号：EP1406412A4
公开(公告)日：2005-09-21
申请号：EP02743887
申请日：2002-07-09
CPC分类号： H04L9/0858 , H04L2209/34
摘要： Tentatively shared data is divided into a refining block and a disposable block, the refining block is agitated by a humming distance amplification effect by the both to extend a humming distance, a transmitter (1) transmits this agitation data as a Vernam cipher by means of disposable data, and a receiver (2) decodes the received Vernam cipher in its disposable block, compares data that has agitated it own refining block with a humming distance, and judges whether sharing is possible or not.
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2.发明公开PHOTON DETECTING APPARATUS AND OPTICAL COMMUNICATION SYSTEM 有权PHOTONENDETEKTIONSVORRICHTUNG UND OPTISCHUN KOMMUNIKATIONSSYSTEM
公开(公告)号：EP1783931A4
公开(公告)日：2007-11-28
申请号：EP04747396
申请日：2004-07-12
IPC分类号： H04B10/516 , H04B10/524 , H04B10/61 , H04B10/70 , H04J14/00 , H04J14/02 , H04J14/08 , H04L9/08 , H04L9/12
CPC分类号： H04L9/0852 , G01J11/00 , H04B10/70 , H04J14/02
摘要： A photon detecting apparatus for use in a quantum encryption receiver apparatus or the like, wherein a plurality of photon detectors are used to improve the response speed of the photon detecting apparatus. There are included wavelength branching means (12) for branching a wavelength-multiplexed incident photon pulse sequence for each of wavelengths; a plurality of photon detectors (13-1, ···, 13-n) for detecting the photons as branched by the wavelength branching means (12); bias applying means (14) for applying gate pulses, as bias voltages, to the respective ones of the plurality of photon detectors (13-1, ···, 13-n) in conformity with the timings at which the output lights of the wavelength branching means (12) are incident on the plurality of photon detectors (13-1, ···, 13-n); and data processing means (15) for converting the detection signals from the plurality of photon detectors (13-1, ···, 13-n) to time series signals.
摘要翻译： 一种用于量子加密接收机装置等的光子检测装置，其中使用多个光子检测器来提高光子检测装置的响应速度。 包括波长分支装置（12），用于分支每个波长的波长复用入射光子脉冲序列; 多个光子检测器（13-1，...，13-n），用于检测由波长分支装置（12）分支的光子; 偏置施加装置（14），用于根据所述多个光子检测器（13-1，...，13-n）中的输出光的定时将栅极脉冲作为偏置电压施加到所述多个光子检测器 波长分支装置（12）入射到多个光子检测器（13-1，...，13-n）上。 和数据处理装置（15），用于将来自多个光子检测器（13-1，...，13-n）的检测信号转换成时间序列信号。
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公开(公告)号：EP1324531A4
公开(公告)日：2008-05-21
申请号：EP01963504
申请日：2001-09-07
IPC分类号： G02F1/01 , H04B10/00 , H04B10/548 , H04B10/564 , H04B10/70 , H04L9/08 , H04L9/38 , H04L27/20
CPC分类号： H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/548 , H04L9/0858
摘要： The rise time until the voltage applied to a phase modulator increases up to a target value and the fall until the voltage decreases to zero voltage are ignorable during high-speed operation. First and second phase modulators (71, 73) are provided parallel. A switch section (55) of a control unit (51) switches first and second optical switches (33, 35) to change the optical path. The switch section (55) supplies phase modulation data (31) stored in a phase modulation data memory (53) to a first or second voltage generator (57, 59), which generates a voltage necessary for phase modulation.
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公开(公告)号：EP1445890A4
公开(公告)日：2005-01-26
申请号：EP02770218
申请日：2002-09-26
CPC分类号： H04B10/70 , H04L9/0858
摘要： A quantum transmission apparatus (100) and a quantum reception apparatus (200) perform quantum modulation or quantum demodulation according to a pseudo-random number generated from secret common information shared in secret by the apparatuses (100, 200).
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5.发明公开PHASE MODULATION DEVICE, TRANSMISSION DEVICE, RECEPTION DEVICE, AND PHASE MODULATION METHOD 审中-公开相位调制设备，传输设备，接收装置与相位调制方法
公开(公告)号：EP2328011A4
公开(公告)日：2015-03-04
申请号：EP08876984
申请日：2008-09-22
IPC分类号： G02F1/01 , H04B10/548 , H04B10/70 , H04L9/12
CPC分类号： G02F1/0121 , H04B10/548 , H04B10/70 , H04L9/0858
摘要： It is aimed to provide a phase modulation apparatus that realizes high-precision phase modulation in high-speed phase modulation of dual optical pulses. A phase modulator 105 included in the phase modulation apparatus, when a dual optical pulse with a time difference composed of a signal optical pulse SP and a reference optical pulse RP passes therethrough, phase-modulates this dual optical pulse in proportion to an applied voltage of an electrical pulse. As a result, a phase-modulated SP' and a phase-modulated RP' are output. A modulation signal generator 106 outputs an electrical pulse of a predetermined bias at an input timing of a trigger signal, according to an input of a four-valued data signal, for example. The modulation signal generator 106 outputs, for one input of the trigger signal, a dual electrical pulse having a time difference and having opposite polarities. The time difference of this dual electrical pulse corresponds to the time difference of the dual optical pulse that passes through the phase modulator 105.
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公开(公告)号：EP1324101A4
公开(公告)日：2007-11-14
申请号：EP01963439
申请日：2001-09-05
IPC分类号： H04B10/50 , H04L9/08 , G02F1/01 , H04B10/00 , H04B10/2507 , H04B10/516 , H04B10/524 , H04B10/556 , H04B10/61 , H04B10/70 , H04B10/85 , H04L9/38
CPC分类号： H04B10/505 , H04B10/5057 , H04L9/0858
摘要： The optical system of a transmitter for quantum cipher comprises a Faraday mirror and a phase modulator. The phase modulator has a double refraction power, and therefore a very large insertion loss attributed to the optical path structure is inevitable. As a result, the S/N ratio is low and the adjustment at start is difficult. Two different optical pulses, an optical pulse of TE polarization and an optical pulse of TM polarization enter the transmitter and pass through a phase modulator (8). The optical pulse of TE polarization is changed to an optical pulse of TM polarization and the optical pulse of TM polarization is changed to an optical pulse of TE polarization because of rotation of polarization plane by a Faraday mirror (7) and reflected by the mirror (7) and outputted from the transmitter. Two polarization beam splitters (5, 6) are used, and the optical pulse of TM polarization is made to bypass the phase modulator (8). Only the optical pulse of TE polarization is made to pass through the phase modulator (8).
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