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Long distance decoy state quantum key distribution in optical fiber

Published

Author(s)

Danna Rosenberg, Jim A. Harrington, Patrick R. Rice, Philip A. Hiskett, Charles G. Peterson, Richard J. Hughes, Jane E. Nordholt, Adriana Lita, Sae Woo Nam

Abstract

The theoretical existence of photon-number-splitting attacks creates a security loophole for most quantum key distribution (QKD) demonstrations that use a highly attenuated laser source. Using ultralow-noise, high-efficiency transition-edge sensor photodetectors, we have implemented the first version of a decoy-state protocol that incorporates finite statistics without the use of Gaussian approximations in a one-way QKD system, enabling the creation of secure keys immune to photon-number-splitting attacks and highly resistant to Trojan horse attacks over 107 km of optical fiber.
Citation
Physical Review Letters
Volume
98
Issue
(1)

Keywords

quantum information, quantum key distribution, single photon detector, transition-edge sensor

Citation

Rosenberg, D. , Harrington, J. , Rice, P. , Hiskett, P. , Peterson, C. , Hughes, R. , Nordholt, J. , Lita, A. and Nam, S. (2007), Long distance decoy state quantum key distribution in optical fiber, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32497 (Accessed April 19, 2024)
Created January 4, 2007, Updated October 12, 2021