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Tomographic quantum cryptography: equivalence of quantum and classical key distillation.

Abstract:

The security of a cryptographic key that is generated by communication through a noisy quantum channel relies on the ability to distill a shorter secure key sequence from a longer insecure one. For an important class of protocols, which exploit tomographically complete measurements on entangled pairs of any dimension, we show that the noise threshold for classical advantage distillation is identical with the threshold for quantum entanglement distillation. As a consequence, the two distillati...

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Publication status:
Published

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Authors


Christandl, M More by this author
Englert, BG More by this author
Kaszlikowski, D More by this author
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Journal:
Physical review letters
Volume:
91
Issue:
9
Pages:
097901
Publication date:
2003-08-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:2a2d99fb-f880-44af-8237-4575ad1b8055
Source identifiers:
155847
Local pid:
pubs:155847
Language:
English
Keywords:

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