Plug&Play subcarrier wave quantum key distribution with deep modulation

Autor:	Bannik, Oleg I., Moiseev, E. S.
Rok vydání:	2021
Předmět:	Quantum Physics
Zdroj:	Optics Express Vol. 29, Issue 23, pp. 38858-38869 (2021)
Druh dokumentu:	Working Paper
DOI:	10.1364/OE.441619
Popis:	We report a quantum key distribution using subcarrier wave encoding in Plug&Play configuration. Our detailed study shows how subcarrier encoding operates in a presence of Rayleigh back-scattering, chromatic dispersion and other experimental negative factors that occur in Plug&Play configuration. We propose and experimentally demonstrate a novel regime for the subcarrier wave encoding, where simultaneous detection of two logical states in a single basis is combined with robustness and simplicity of the original protocol. This deep modulation regime shows reliable quantum communication with losses up to 20 dB and promises a twice increase in secret key generation rate in comparison with the original subcarrier wave quantum key distribution in one-way or Plug&Play configurations. Comment: 12 pages, 4 figures, 1 table
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2111.04546 Zobrazit plný text záznamu View this record from Arxiv