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Experimental Demonstration of a Detection-time-bin-shift Polarization Encoding Quantum Key Distribution System

Published

Author(s)

Lijun Ma, Tiejun Chang, Alan Mink, Oliver T. Slattery, Barry J. Hershman, Xiao Tang

Abstract

Detection-time-bin-shift (DTBS) is a scheme that uses time division multiplexing of a single photon detector between two photon bases in a quantum key distribution (QKD) system. This scheme can simplify the structure of a QKD system, reduce its cost and overcome the security problems caused by the dead-time induced self-correlation and the unbalanced characteristics of detectors.  In this paper, we introduce an improved DTBS scheme and implement it based on our previously developed conventional fiber-based QKD system using the B92 protocol.  Our DTBS QKD system generates sifted keys at a rate of more than 1 Mbit/s with a quantum bit error rate (QBER) lower than 2% over 1.1 km of fiber.
Citation
IEEE Communications Letters
Volume
12

Keywords

detection-time-bin-shift, quantum cryptography, quantum key distribution

Citation

Ma, L. , Chang, T. , Mink, A. , Slattery, O. , Hershman, B. and Tang, X. (2008), Experimental Demonstration of a Detection-time-bin-shift Polarization Encoding Quantum Key Distribution System, IEEE Communications Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=150674 (Accessed June 2, 2023)
Created June 5, 2008, Updated October 12, 2021