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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 100m 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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Journal:
New Journal of Physics
Volume:
11
Publication date:
2009-04-30
DOI:
ISSN:
1367-2630
URN:
uuid:ab3545ee-f954-4710-9c0a-6241ee98be56
Source identifiers:
220929
Local pid:
pubs:220929
Language:
English

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