Mesoscopic one-way channels for quantum state transfer via the quantum hall effect

Stace, T. M., Barnes, C. H. W. and Milburn, G. J. (2004) Mesoscopic one-way channels for quantum state transfer via the quantum hall effect. Physical Review Letters, 93 12: 126804-1-126804-4. doi:10.1103/PhysRevLett.93.126804

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Author Stace, T. M.
Barnes, C. H. W.
Milburn, G. J.
Title Mesoscopic one-way channels for quantum state transfer via the quantum hall effect
Journal name Physical Review Letters   Check publisher's open access policy
ISSN 0031-9007
1079-7114
Publication date 2004-01-01
Sub-type Article (original research)
DOI 10.1103/PhysRevLett.93.126804
Open Access Status File (Publisher version)
Volume 93
Issue 12
Start page 126804-1
End page 126804-4
Total pages 4
Editor Martin Blume
Place of publication College Pk
Publisher The American Physical Society
Collection year 2004
Language eng
Subject C1
240402 Quantum Optics and Lasers
780102 Physical sciences
02 Physical Sciences
020604 Quantum Optics
Abstract We show that the one-way channel formalism of quantum optics has a physical realization in electronic systems. In particular, we show that magnetic edge states form unidirectional quantum channels capable of coherently transporting electronic quantum information. Using the equivalence between one-way photonic channels and magnetic edge states, we adapt a proposal for quantum state transfer to mesoscopic systems using edge states as a quantum channel, and show that it is feasible with reasonable experimental parameters. We discuss how this protocol may be used to transfer information encoded in number, charge, or spin states of quantum dots, so it may prove useful for transferring quantum information between parts of a solid-state quantum computer
Keyword Quantum Computation
Conductors
Scattering
Physics, Multidisciplinary
Q-Index Code C1

 
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Created: Wed, 15 Aug 2007, 14:17:53 EST