Generation of atomic momentum cluster and graph states via cavity QED

Generation of atomic momentum cluster and graph states via cavity QED We present an experimentally feasible method, based on currently available cavity QED technology, to generate n-partite linear cluster and graph states in external degree of freedom of atoms. The scheme is based on first tagging n two-level atoms with the respective cavity fields in momentum space. Later on an effective Ising interaction between such tagged atoms, realized through consecutive resonant and dispersive interactions of auxiliary atoms with the remanent cavity fields, can generate the desired atomic momenta states. The procedure is completed when the auxiliary atoms after passing through Ramsey zones are detected in either of their internal states. We also briefly explain the generation of weighted graph states in the atomic external degree of freedom. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Generation of atomic momentum cluster and graph states via cavity QED

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Publisher
Springer Journals
Copyright
Copyright © 2012 by Springer Science+Business Media, LLC
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-012-0359-x
Publisher site
See Article on Publisher Site

Abstract

We present an experimentally feasible method, based on currently available cavity QED technology, to generate n-partite linear cluster and graph states in external degree of freedom of atoms. The scheme is based on first tagging n two-level atoms with the respective cavity fields in momentum space. Later on an effective Ising interaction between such tagged atoms, realized through consecutive resonant and dispersive interactions of auxiliary atoms with the remanent cavity fields, can generate the desired atomic momenta states. The procedure is completed when the auxiliary atoms after passing through Ramsey zones are detected in either of their internal states. We also briefly explain the generation of weighted graph states in the atomic external degree of freedom.

Journal

Quantum Information ProcessingSpringer Journals

Published: Feb 2, 2012

References

  • Can quantum-mechanical description of physical reality be considered complete?
    Einstein, A.; Podolsky, B.; Rosen, N.
  • Can quantum-mechanical description of physical reality be considered complete?
    Bohr, N.
  • Engineering entanglement between external degrees of freedom of atoms via Bragg scattering
    Khalique, A.; Saif, F.
  • Measurement-based teleportation along quantum spin chains
    Tanamoto, T.; Liu, Y.X.; Fujita, S.; Hu, X.; Nori, F.
  • Theoretical and experimental study of the Bragg scattering of atoms from a standing light wave
    Giltner, D.M.; McGowan, R.W.; Lee, S.A.

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