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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.
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 October 7, 2025)