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Title:
RANDOM NUMBER SEQUENCE GENERATION APPARATUS, QUANTUM ENCRYPTION TRANSMITTER, AND QUANTUM ENCRYPTION COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/135444
Kind Code:
A1
Abstract:
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.

Inventors:
TOMITA AKIHISA (JP)
NAKATA KENSUKE (JP)
Application Number:
PCT/JP2017/004081
Publication Date:
August 10, 2017
Filing Date:
February 03, 2017
Export Citation:
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Assignee:
NAT UNIV CORP HOKKAIDO UNIV (JP)
International Classes:
G09C1/00; G02F1/21; G02F3/00; G06F7/58; H04B10/70; H04B10/85; H04L9/12
Foreign References:
JP2016006629A2016-01-14
US20130036145A12013-02-07
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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