Creffield, CE;
Monteiro, TS;
(2006)
Tuning the Mott transition in a Bose-Einstein condensate by multiple photon absorption.
PHYS REV LETT
, 96
(21)
, Article 210403. 10.1103/PhysRevLett.96.210403.
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Abstract
We study the time-dependent dynamics of a Bose-Einstein condensate trapped in an optical lattice. Modeling the system as a Bose-Hubbard model, we show how applying a periodic driving field can induce coherent destruction of tunneling. In the low-frequency regime, we obtain the novel result that the destruction of tunneling displays extremely sharp peaks when the driving frequency is resonant with the depth of the trapping potential ("multi-photon resonances"), which allows the quantum phase transition between the Mott insulator and the superfluid state to be controlled with high precision. We further show how the waveform of the field can be chosen to maximize this effect.
| Type: | Article |
|---|---|
| Title: | Tuning the Mott transition in a Bose-Einstein condensate by multiple photon absorption |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.96.210403 |
| Keywords: | OPTICAL LATTICES, ATOMS |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/9847 |
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