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A quantum repeater based on decoherence free subspaces

Abstract:

We study a quantum repeater which is based on decoherence free quantum gates recently proposed by Klein et al. [Phys. Rev. A, 73, 012332 (2006)]. A number of operations on the decoherence free subspace in this scheme makes use of an ancilla qubit, which undergoes dephasing and thus introduces decoherence to the system. We examine how this decoherence affects entanglement swapping and purification as well as the performance of a quantum repeater. We compare the decoherence free quantum repeate...

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Publisher:
Rinton Press Inc.
Journal:
Quantum Information and Computation
Volume:
8
Issue:
5
Pages:
0468-0488
Publication date:
2008-05-01
ISSN:
1533-7146
Source identifiers:
161210
Language:
English
Keywords:
Pubs id:
pubs:161210
UUID:
uuid:c191ce16-e2a4-4c9b-bd01-48b2f5650ac2
Local pid:
pubs:161210
Deposit date:
2012-12-19

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