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Communication capacity of quantum computation.

Abstract:
By considering quantum computation as a communication process, we relate its efficiency to its classical communication capacity. This formalism allows us to derive lower bounds on the complexity of search algorithms in the most general context. It enables us to link the mixedness of a quantum computer to its efficiency and also allows us to derive the critical level of mixedness beyond which there is no quantum advantage in computation.
Publication status:
Published

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Publisher copy:
10.1103/physrevlett.85.5448

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author


Publisher:
American Inst of Physics
Journal:
Physical Review Letters More from this journal
Volume:
85
Issue:
25
Pages:
5448-5451
Publication date:
2000-12-01
DOI:
EISSN:
1079-7114
ISSN:
0031-9007


Language:
English
Pubs id:
pubs:155841
UUID:
uuid:9c48e871-fa2c-45d7-aa46-65844e86ae6d
Local pid:
pubs:155841
Source identifiers:
155841
Deposit date:
2012-12-19

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