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Experimental quantum fingerprinting with weak coherent pulses

Author(s)
Xu, Feihu; Arrazola, Juan Miguel; Wei, Kejin; Wang, Wenyuan; Palacios-Avila, Pablo; Feng, Chen; Sajeed, Shihan; Lo, Hoi-Kwong; Norbert, Lutkenhaus; ... Show more Show less
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Abstract
Quantum communication holds the promise of creating disruptive technologies that will play an essential role in future communication networks. For example, the study of quantum communication complexity has shown that quantum communication allows exponential reductions in the information that must be transmitted to solve distributed computational tasks. Recently, protocols that realize this advantage using optical implementations have been proposed. Here we report a proof-of-concept experimental demonstration of a quantum fingerprinting system that is capable of transmitting less information than the best-known classical protocol. Our implementation is based on a modified version of a commercial quantum key distribution system using off-the-shelf optical components over telecom wavelengths, and is practical for messages as large as 100 Mbits, even in the presence of experimental imperfections. Our results provide a first step in the development of experimental quantum communication complexity.
Date issued
2015-10
URI
http://hdl.handle.net/1721.1/100902
Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
Journal
Nature Communications
Publisher
Nature Publishing Group
Citation
Xu, Feihu, Juan Miguel Arrazola, Kejin Wei, Wenyuan Wang, Pablo Palacios-Avila, Chen Feng, Shihan Sajeed, Norbert Lutkenhaus, and Hoi-Kwong Lo. “Experimental Quantum Fingerprinting with Weak Coherent Pulses.” Nat Comms 6 (October 30, 2015): 8735. © 2015 Macmillan Publishers Limited
Version: Final published version
ISSN
2041-1723

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