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Dynamical control of cold bosons using oscillating potentials

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2009
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IOP Publishing Ltd
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The dynamics of cold bosonic atoms held in an optical lattice can be profoundly modified by using a periodic driving potential to induce the quantum interference effect termed ”coherent destruction of tunneling”. In this way the entanglement and localization of individual particles [1] can be very precisely controlled, pointing to the attractive possibility of using these systems for quantum information processing. This tunneling control also allows the effects of inter- particle interactions to be manipulated in a novel fashion, thereby giving precise control of the quantum phase transition [2] between the Mott insulator and the superfluid, and also providing a convenient means to manipulate the self-trapping effect [3].
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© 2009 IOP Publishing Ltd. The author acknowledges many stimulating discussions with Tania Monteiro, Fernando Sols, and Martin Holthaus.
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[1] Creffield CE, 2007 Phys. Rev. Lett 99, 110501 [2] Creffield CE and Monteiro TS, 2006 Phys. Rev. Lett. 96, 210403 [3] Creffield CE, 2007 Phys. Rev. A 75, 031607R [4] Grossmann F, Dittrich T, Jung P and H¨anggi P, 1991 Phys. Rev. Lett. 67, 516 [5] Lignier H, Sias C, Ciampini D, Singh Y, Zenesini A, Morsch O and Arimondo E, 2007 Phys. Rev. Lett. 99 220403 [6] Jaksch D, Bruder C, Cirac JI, Gardiner CW and Zoller P, 1998 Phys. Rev. Lett. 81, 3108 [7] Greiner M, Mandel O, Esslinger T, H¨ansch TW and Bloch I, 2002 Nature 415, 39 [8] Eckardt A, Jinasundera T, Weiss C and Holthaus M, 2005 Phys. Rev. Lett. 95, 200401
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