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RANDOM NUMBER SEQUENCE GENERATION APPARATUS, QUANTUM ENCRYPTION TRANSMITTER, AND QUANTUM ENCRYPTION COMMUNICATION SYSTEM NEW

外国特許コード F170009156
整理番号 (S2016-0356-N0)
掲載日 2017年8月24日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2017JP004081
国際公開番号 WO 2017135444
国際出願日 平成29年2月3日(2017.2.3)
国際公開日 平成29年8月10日(2017.8.10)
優先権データ
  • 特願2016-019552 (2016.2.4) JP
発明の名称 (英語) RANDOM NUMBER SEQUENCE GENERATION APPARATUS, QUANTUM ENCRYPTION TRANSMITTER, AND QUANTUM ENCRYPTION COMMUNICATION SYSTEM NEW
発明の概要(英語) A random number sequence generation apparatus 1 comprises: a semiconductor laser device 11 that repeatedly generates pulse laser light in which phases of pulses are random; an interferometer 12 that has a first transmission channel 22 and a second transmission channel 23 having mutually different transmission channel lengths, a first port 24 which is connected to an input end 20 side and to which pulse laser light is input, a second port 25 which is connected to an output end 21 side, and which outputs pulse laser light that has passed through any of the transmission channels, and a third port 26 that is connected to the input end 20 side; a Faraday mirror 50 which is connected to the second port 25, and which reflects pulse laser light; a photodiode 51 which is connected to the third port 26, and which outputs an electric signal in accordance with interference light of pulse laser light that has been reflected by the Faraday mirror 50 and passed through any of the transmission channels; and an AD converter 53 that generates a random number sequence on the basis of a magnitude relationship between signal intensity of the electric signal and a threshold.
特許請求の範囲(英語) [claim1]
1. Pulse oscillating, the semiconductor laser device which repeatedly forms the pulsed laser light whose phase every of pulse is disordered and,
The 2nd port which outputs each one of the aforementioned pulsed laser light where the 1st transmission line which possesses the transmission line length which differs mutually and it is connected by the input edge side of the 2nd transmission line and the aforementioned 1st transmission line and the aforementioned 2nd transmission line, it is connected by the output edge side of the 1st port and the aforementioned 1st transmission line and the aforementioned 2nd transmission line where the aforementioned pulsed laser light is input, is input by the aforementioned 1st port and by way of the aforementioned 1st transmission line or the aforementioned 2nd transmission line and the 3rd port which is connected to the aforementioned input edge side and, the interferometer which it possesses,
Reflecting the aforementioned pulsed laser light which is connected by the aforementioned 2nd port, is output from the aforementioned 2nd port, the optical reflected section which it inputs into the aforementioned 2nd port again and,
It is connected by the aforementioned 3rd port, being input by the aforementioned 2nd port by the aforementioned optical reflected section, as interference light of the aforementioned pulsed laser light by way of the aforementioned 1st transmission line or the aforementioned 2nd transmission line is input, the photodiode which outputs the electric information according to the aforementioned interference light being input and,
The AD converter which forms the random number sequence on the basis of small and large relationship between signal strength of the aforementioned electric information and the threshold which is set beforehand and, it has, the random number sequence formation device.
[claim2]
2. Furthermore it has the random number sequence memory section which remembers the aforementioned random number sequence which is formed in the aforementioned AD converter, the random number sequence formation device of claim 1 statement.
[claim3]
3. Verification of random number characteristic is executed vis-a-vis the aforementioned random number sequence which is formed in the aforementioned AD converter, the random number characteristic official approval section which outputs the aforementioned random number sequence which conforms to the aforementioned verification to the aforementioned random number sequence memory section furthermore has, the random number sequence formation device of claim 2 statement.
[claim4]
4. Claim being the quantum cryptographic transmitter which has 2 or the random number sequence formation device of 3 statements,
The 4th port which outputs each one of the aforementioned pulsed laser light where the aforementioned interferometer is connected by the aforementioned output edge side, is input by the aforementioned 1st port and by way of the aforementioned 1st transmission line or the aforementioned 2nd transmission line furthermore possessing,
It has the irregularity section which is modulated optical strength and phase of the aforementioned pulsed laser light which is output from the aforementioned 4th port on the basis of the aforementioned random number sequence which is remembered in the aforementioned random number sequence memory section, the quantum cryptographic transmitter.
[claim5]
5. Being the quantum signal system which has the quantum cryptographic transmitter of claim 4 statement,
The aforementioned pulsed laser light which optical strength and phase is modulated the quantum is communicated it has the quantum cryptographic receiver which with the aforementioned quantum cryptographic transmitters due to the aforementioned irregularity section, the quantum signal system.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • HOKKAIDO UNIVERSITY
  • 発明者(英語)
  • TOMITA AKIHISA
  • NAKATA KENSUKE
国際特許分類(IPC)
指定国 (WO2017135444)
National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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