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Start Over Descriptor "OPTICAL fiber communication" Topic quantum dots Journal journal of optics a: pure & applied optics Publisher iop publishing
1 results on '"OPTICAL fiber communication"'

1. Quantum communication using single photons from a semiconductor quantum dot emitting at a telecommunication wavelength.

Author

Intallura, P M, Ward, M B, Karimov, O Z, Yuan, Z L, See, P, Atkinson, P, Ritchie, D A, and Shields, A J

Subjects
*QUANTUM communication, *QUANTUM dots, *PHOTONS, *TELECOMMUNICATION, *PUBLIC key cryptography, *OPTICAL fiber communication, *TEMPERATURE effect, *STATISTICAL correlation
Abstract

Quantum key distribution with single photons from a telecommunication-wavelength quantum dot source is performed over a standard optical fibre link. The source was operated at a temperature of 70 K and gave g(2)(0)[?]0.166 with an efficiency of 5% after coupling into the single-mode fibre. Correlation results are quoted without subtraction of detector dark counts and g(2)(0) as low as 0.1 was measured, at reduced efficiency. This source enabled a proof-of-principle demonstration of quantum key distribution over 35 km of fibre using the BB84 protocol and phase encoding. [ABSTRACT FROM AUTHOR]

Published
2009
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