Title:
SINGLE-PHOTON DETECTOR TIMING ADJUSTMENT METHOD AND DEVICE IN QUANTUM KEY DISTRIBUTION SYSTEM, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2018/159656
Kind Code:
A1
Abstract:
Provided are: a timing adjustment method and device that are capable of setting a timing at which main pulse detection efficiency is highest and capable of shortening adjustment time; and a recording medium. The method for adjusting the detection timing of a single-photon detector for detecting a weak photon pulse in a quantum key distribution system (QKD) comprises: recording the number of detected photons at each timing by scanning a gate application timing within a prescribed scanning range; extracting the peaks at at least two points adjacent to each other in the recorded number of detected photons; evaluating error rates at the extracted peaks at at least two points; and setting the detection timing at the peak of the lower error rate.
Inventors:
YOSHINO KEN-ICHIRO (JP)
Application Number:
PCT/JP2018/007426
Publication Date:
September 07, 2018
Filing Date:
February 28, 2018
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04B10/70; H04B10/69
Domestic Patent References:
| WO2014132609A1 | 2014-09-04 |
Foreign References:
| JP4663651B2 | 2011-04-06 | |||
| JP2016163079A | 2016-09-05 | |||
| US20090022326A1 | 2009-01-22 |
Attorney, Agent or Firm:
SHIMOSAKA Naoki (JP)
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