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Large-alphabet time-frequency entangled quantum key distribution by means of time-to-frequency conversion.

Abstract:

We introduce a novel time-frequency quantum key distribution (TFQKD) scheme based on photon pairs entangled in these two conjugate degrees of freedom. The scheme uses spectral detection and phase modulation to enable measurements in the temporal basis by means of time-to-frequency conversion. This allows large-alphabet encoding to be implemented with realistic components. A general security analysis for TFQKD with binned measurements reveals a close connection with finite-dimensional QKD prot...

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Publication status:
Published

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Publisher copy:
10.1364/oe.21.015959

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
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Publisher:
Optical Society of American (OSA)
Journal:
Optics express
Volume:
21
Issue:
13
Pages:
15959-15973
Publication date:
2013-07-01
DOI:
EISSN:
1094-4087
ISSN:
1094-4087
Source identifiers:
411203
Language:
English
Pubs id:
pubs:411203
UUID:
uuid:096c90c8-ee3d-43d4-b961-20dcf2b3bd33
Local pid:
pubs:411203
Deposit date:
2013-11-16

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