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Optimal purification of single qubits

Abstract:
We introduce a new decomposition of the multiqubit states of the form $\rho^{\otimes N}$ and employ it to construct the optimal single qubit purification procedure. The same decomposition allows us to study optimal quantum cloning and state estimation of mixed states.
Publication status:
Published

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Publisher copy:
10.1103/PhysRevLett.82.4344

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Institution:
University of Oxford
Division:
MPLS
Department:
Mathematical Institute
Role:
Author
Journal:
Phys.Rev.Lett.
Volume:
82
Issue:
21
Pages:
4344-4347
Publication date:
1998-12-26
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Source identifiers:
20962
Language:
English
Keywords:
Pubs id:
pubs:20962
UUID:
uuid:12d9484b-53d7-4890-a38c-8ecb6871c870
Local pid:
pubs:20962
Deposit date:
2012-12-19

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