Quantum key distribution at telecom wavelengths with noise-free detectors

Published

January 13, 2006

Author(s)

Danna Rosenberg, Sae Woo Nam, Philip A. Hiskett, Charles G. Peterson, Richard J. Hughes, Jane E. Nordholt, Adriana Lita, Aaron J. Miller

Abstract

The length of a secure link over which a quantum key can be distributed depends on the efficiency and dark-count rate of the detectors used at the receiver. We report on the first demonstration of quantum key distribution using transition-edge sensors with high efficiency and negligible dark-count rates. Using two methods of synchronization, a bright optical pulse scheme and an electrical signal scheme, we have successfully distributed key material at 1550 nm over 50 km of optical fiber. We discuss how use of these detectors in a quantum key distribution system can result in dramatic increases in range and performance.

Citation

Applied Physics Letters

Volume

88

Issue

2

Pub Type

Journals

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Keywords

fiber optic, quantum information, quantum key distribution, quatnum communication, single photon detectors, transition-edge sensor

Citation

Rosenberg, D. , Nam, S. , Hiskett, P. , Peterson, C. , Hughes, R. , Nordholt, J. , Lita, A. and Miller, A. (2006), Quantum key distribution at telecom wavelengths with noise-free detectors, Applied Physics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32126 (Accessed September 20, 2024)