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Feasibility of free space quantum key distribution with coherent polarization states

Abstract:

We demonstrate for the first time the feasibility of free space quantum key distribution with continuous variables under real atmospheric conditions. More specifically, we transmit coherent polarization states over a 100 m free space channel on the roof of our institute's building. In our scheme, signal and local oscillator (LO) are combined in a single spatial mode, which auto-compensates atmospheric fluctuations and results in an excellent interference. Furthermore, the LO acts as a spatial...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1088/1367-2630/11/4/045014

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
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European Union More from this funder
Publisher:
IOP Publishing Publisher's website
Journal:
New Journal of Physics Journal website
Volume:
11
Issue:
4
Article number:
045014
Publication date:
2009-04-01
DOI:
EISSN:
1367-2630
ISSN:
1367-2630
Source identifiers:
220931
UUID:
uuid:76633789-3c4f-493f-a156-56f5a1b496bb
Local pid:
pubs:220931
Deposit date:
2012-12-19

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