Field-installed fiber transmission of Y-00 quantum noise stream cipher with quantum deliberate signal randomization

Fumio Futami; Ken Tanizawa; Kentaro Kato

doi:10.1117/12.2645899

15 March 2023 Field-installed fiber transmission of Y-00 quantum noise stream cipher with quantum deliberate signal randomization

Fumio Futami, Ken Tanizawa, Kentaro Kato

Author Affiliations +

Proceedings Volume 12429, Next-Generation Optical Communication: Components, Sub-Systems, and Systems XII; 124291J (2023) https://doi.org/10.1117/12.2645899
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

This study demonstrates the optical fiber transmission of the Y-00 quantum stream cipher with quantum deliberate signal randomization (QDSR). QDSR is a deliberate signal randomization driven by a quantum random number generator, which substantially enhances signal masking using quantum noise to realize higher security. A 10-Gb/s line-rate dualpolarization phase-shift keying Y-00 cipher with QDSR is transmitted over a 400-km field-installed single-mode fiber link with optical amplifiers. When the phase levels after encryption and the index of QDSR are set to 2¹⁶ and 0.2, respectively, the quantum noise masking number increases by a factor of more than 40 compared to that without QDSR, which enhances security. However, the transmission penalty owing to QDSR remains small.

Conference Presentation

Citation Download Citation

Fumio Futami, Ken Tanizawa, and Kentaro Kato "Field-installed fiber transmission of Y-00 quantum noise stream cipher with quantum deliberate signal randomization", Proc. SPIE 12429, Next-Generation Optical Communication: Components, Sub-Systems, and Systems XII, 124291J (15 March 2023); https://doi.org/10.1117/12.2645899

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