Reference-Frame-Independent Quantum-Key-Distribution Server with a Telecom Tether for an On-Chip Client

Reference-Frame-Independent Quantum-Key-Distribution Server with a Telecom Tether for an On-Chip... We demonstrate a client-server quantum key distribution (QKD) scheme. Large resources such as laser and detectors are situated at the server side, which is accessible via telecom fiber to a client requiring only an on-chip polarization rotator, which may be integrated into a handheld device. The detrimental effects of unstable fiber birefringence are overcome by employing the reference-frame-independent QKD protocol for polarization qubits in polarization maintaining fiber, where standard QKD protocols fail, as we show for comparison. This opens the way for quantum enhanced secure communications between companies and members of the general public equipped with handheld mobile devices, via telecom-fiber tethering. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review Letters American Physical Society (APS)

Reference-Frame-Independent Quantum-Key-Distribution Server with a Telecom Tether for an On-Chip Client

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Publisher
American Physical Society (APS)
Copyright
© 2014 American Physical Society
Subject
LETTERS; General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.
ISSN
0031-9007
eISSN
1079-7114
D.O.I.
10.1103/PhysRevLett.112.130501
Publisher site
See Article on Publisher Site

Abstract

We demonstrate a client-server quantum key distribution (QKD) scheme. Large resources such as laser and detectors are situated at the server side, which is accessible via telecom fiber to a client requiring only an on-chip polarization rotator, which may be integrated into a handheld device. The detrimental effects of unstable fiber birefringence are overcome by employing the reference-frame-independent QKD protocol for polarization qubits in polarization maintaining fiber, where standard QKD protocols fail, as we show for comparison. This opens the way for quantum enhanced secure communications between companies and members of the general public equipped with handheld mobile devices, via telecom-fiber tethering.

Journal

Physical Review LettersAmerican Physical Society (APS)

Published: Apr 2, 2014

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