A low-noise single-photon detector for long-distance free-space quantum communication

Autor:	Anisimova, Elena, Nikulov, Dmitri, Hu, Simeng Simone, Bourgon, Mark, Neumann, Sebastian Philipp, Ursin, Rupert, Jennewein, Thomas, Makarov, Vadim
Rok vydání:	2020
Předmět:	Quantum Physics Physics - Instrumentation and Detectors
Zdroj:	EPJ Quantum Technol. 8, 23 (2021)
Druh dokumentu:	Working Paper
DOI:	10.1140/epjqt/s40507-021-00111-0
Popis:	We build and test a single-photon detector based on a Si avalanche photodiode Excelitas 30902SH thermoelectrically cooled to -100 deg. C. Our detector has dark count rate below 1 Hz, 500 um diameter photosensitive area, photon detection efficiency around 50%, afterpulsing less than 0.35%, and timing jitter under 1 ns. These characteristics make it suitable for long-distance free-space quantum communication links, which we briefly discuss. We also report an improved method that we call long-time afterpulsing analysis, used to determine and visualise long trap lifetimes at different temperatures. Comment: 10 pages, 9 figures, 1 table
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2007.12768 Zobrazit plný text záznamu View this record from Arxiv