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Quantum state transfer via temporal kicking of information

Source: Phys. Rev. A 81, 022319 (2010); doi:10.1103/PhysRevA.81.022319

Published 22 February 2010

PACS
  • 03.67.Hk
    Quantum communication
  • 75.10.Pq
    Spin chain models (magnetism)
  • YEAR: 2010
PUBLICATION DATA
ISSN:
1553-9644 (online)
Publisher:
AIP is a member of CrossRef APS
C. Di Franco,1 M. Paternostro,2 and M. S. Kim2
1Department of Physics, University College Cork, Cork, Republic of Ireland
2School of Mathematics and Physics, Queen's University, Belfast BT7 1NN, United Kingdom
We propose a strategy for perfect state transfer in spin chains based on the use of an unmodulated coupling Hamiltonian whose coefficients are explicitly time dependent. We show that, if specific and nondemanding conditions are satisfied by the temporal behavior of the coupling strengths, our model allows perfect state transfer. The paradigm put forward by our proposal holds the promises to set an alternative standard to the use of clever encoding and coupling-strength engineering for perfect state transfer. ©2010 The American Physical Society
History: Received 4 December 2009; published 22 February 2010
Permalink: http://link.aps.org/abstract/PRA/v81/e022319
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