Single-photon interference over 150 km transmission using silica-based integrated-optic interferometers for quantum cryptography

Tadamasa Kimura, Yoshihiro Nambu, Takaaki Hatanaka, Akihisa Tomita, Hideo Kosaka, Kazuo Nakamura

Research output: Contribution to journalArticlepeer-review

65 Citations (Scopus)

Abstract

We have demonstrated single-photon interference over 150km using time-division interferometers for quantum cryptography, which were composed of two integrated-optic asymmetric Mach-Zehnder interferometers, and balanced gated-mode photon detectors. The observed fringe visibility was more than 80% after 150km transmission.

Original languageEnglish
Pages (from-to)L1217-L1219
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume43
Issue number9 AB
DOIs
Publication statusPublished - 2004 Sep 15

Keywords

  • Integrated optoelectronics
  • Optical communication
  • Quantum cryptography

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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