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Detector performance in long-distance quantum key distribution using superconducting nanowire single-photon detectors

Published

Author(s)

Burm Baek, Lijun Ma, Alan Mink, Xiao Tang, Sae Woo Nam

Abstract

The recent advances in superconducting nanowire single-photon detector (SNSPD or SSPD) technology has enabled long distance quantum key distribution (QKD) over an optical fiber. We point out that the performance of SNSPDs play a crucial role in achieving a secure transmission distance of 100 km or longer. We analyze such an impact from a simplified model and use it to interpret results from our differential-phase-shift (DPS) QKD experiment. This allows us to discuss the optimization of the detection time window and the clock frequency given the detector characteristics such as dark count rate, detection efficiency, and timing jitter.
Proceedings Title
Proc., SPIE
Conference Dates
April 13-17, 2009
Conference Location
Orlando, FL
Conference Title
SPIE Defense, Security, and Sensing 2009

Keywords

Quantum key distribution, superconducting nanowire single-photon detector, optical fiber, single photon detector, superconducting detector, cryptography

Citation

Baek, B. , Ma, L. , Mink, A. , Tang, X. and Nam, S. (2009), Detector performance in long-distance quantum key distribution using superconducting nanowire single-photon detectors, Proc., SPIE, Orlando, FL, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=902216 (Accessed March 4, 2024)
Created April 12, 2009, Updated February 19, 2017