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Proceedings Paper

Single photon detector comparison in a quantum key distribution test
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Paper Abstract

We provide a direct comparison between the InGaAs avalanche photodiode (APD) and the NbN superconducting single photon detector (SSPD) for applications in fiber-based quantum cryptography. The quantum efficiency and dark count rate were measured for each detector, and used to calculate the quantum bit error rate (QBER) and shared key rate for a QKD link. The results indicate that, despite low quantum efficiency, the speed of the SSPD makes it a superior detector for quantum information applications. Finally, we present results of an initial integration of an SSPD into a receiver node of the DARPA quantum network to perform quantum key distribution.

Paper Details

Date Published: 3 November 2006
PDF: 6 pages
Proc. SPIE 6372, Advanced Photon Counting Techniques, 63720Z (3 November 2006); doi: 10.1117/12.685552
Show Author Affiliations
Jonathan L. Habif, BBN Technologies (United States)
David S. Pearson, BBN Technologies (United States)
Robert H. Hadfield, National Institute of Standards and Technology (United States)
Robert E. Schwall, National Institute of Standards and Technology (United States)
Sae Woo Nam, National Institute of Standards and Technology (United States)
Aaron J. Miller, Albion College (United States)


Published in SPIE Proceedings Vol. 6372:
Advanced Photon Counting Techniques
Wolfgang Becker, Editor(s)

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