Coherent control of atomic tunnelling

[en] We study the tunnelling of a two-level atom in a double well potential while the atom is coupled to a single electromagnetic field mode of a cavity. The coupling between internal and external degrees of freedom, due to the mechanical effect on the atom from photon emission into the cavity mode, can dramatically change the tunnelling behaviour. We predict that in general the tunnelling process becomes quasiperiodic. In a certain regime of parameters a collapse and revival of the tunnelling occurs. Accessing the internal degrees of freedom of the atom with a laser allows us to coherently manipulate the atom position, and in particular to prepare the atom in one of the two wells.

Disciplines :

Physics

Author, co-author :

Martin, John ; Université de Liège - ULiège > Département de physique > Physique des atomes froids

Braun, Daniel

Language :

English

Title :

Coherent control of atomic tunnelling

Publication date :

2008

Journal title :

Journal of the Physics B: Atomic and Molecular Physics

ISSN :

0022-3700

Publisher :

Institute of Physics (IOP)

Volume :

Pages :

5502

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://adsabs.harvard.edu/abs/2008JPhB...41k5502M

Commentary :

http://de.arxiv.org/abs/0704.0763

Available on ORBi :

since 30 November 2009

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