Momentum-space engineering of gaseous Bose-Einstein condensates

Details Momentum-space engineering of gaseous Bose-Einstein condensates Momentum-space engineering of gaseous Bose-Einstein condensates

2010-09-03

arxiv.org/abs/1009.0759v2

Phys. Rev. A 82, 063613 (2010)

Physics

Condensed Matter

Quantum Gases

13 pages, 4 figures

Scientific paper

10.1103/PhysRevA.82.063613

We show how the momentum distribution of gaseous Bose--Einstein condensates can be shaped by applying a sequence of standing-wave laser pulses. We present a theory, whose validity for was demonstrated in an earlier experiment [L.\ Deng, et al., \prl {\bf 83}, 5407 (1999)], of the effect of a two-pulse sequence on the condensate wavefunction in momentum space. We generalize the previous result to the case of $N$ pulses of arbitrary intensity separated by arbitrary intervals and show how these parameters can be engineered to produce a desired final momentum distribution. We find that several momentum distributions, important in atom-interferometry applications, can be engineered with high fidelity with two or three pulses.

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