Expansion of a quantum gas released from an optical lattice

F. Gerbier; S. Trotzky; S. Fölling; U. Schnorrberger; J. D. Thompson; A. Widera; I. Bloch; L. Pollet; M. Troyer; B. Capogrosso-Sansone; N. V. Prokof'ev; B. V. Svistunov

doi:10.1103/PhysRevLett.101.155303

Expansion of a quantum gas released from an optical lattice

F. Gerbier, S. Trotzky, S. Fölling, U. Schnorrberger, J. D. Thompson, A. Widera, I. Bloch, L. Pollet, M. Troyer, B. Capogrosso-Sansone, N. V. Prokof'ev, B. V. Svistunov

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96 Scopus citations

Abstract

We analyze the interference pattern produced by ultracold atoms released from an optical lattice, commonly interpreted as the momentum distributions of the trapped quantum gas. We show that for finite times of flight the resulting density distribution can, however, be significantly altered, similar to a near-field diffraction regime in optics. We illustrate our findings with a simple model and realistic quantum Monte Carlo simulations for bosonic atoms and compare the latter to experiments.

Original language	English (US)
Article number	155303
Journal	Physical review letters
Volume	101
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.101.155303
State	Published - Oct 9 2008
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.101.155303

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title = "Expansion of a quantum gas released from an optical lattice",

abstract = "We analyze the interference pattern produced by ultracold atoms released from an optical lattice, commonly interpreted as the momentum distributions of the trapped quantum gas. We show that for finite times of flight the resulting density distribution can, however, be significantly altered, similar to a near-field diffraction regime in optics. We illustrate our findings with a simple model and realistic quantum Monte Carlo simulations for bosonic atoms and compare the latter to experiments.",

author = "F. Gerbier and S. Trotzky and S. F{\"o}lling and U. Schnorrberger and Thompson, {J. D.} and A. Widera and I. Bloch and L. Pollet and M. Troyer and B. Capogrosso-Sansone and Prokof'ev, {N. V.} and Svistunov, {B. V.}",

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AU - Gerbier, F.

AU - Trotzky, S.

AU - Fölling, S.

AU - Schnorrberger, U.

AU - Thompson, J. D.

AU - Widera, A.

AU - Bloch, I.

AU - Pollet, L.

AU - Troyer, M.

AU - Capogrosso-Sansone, B.

AU - Prokof'ev, N. V.

AU - Svistunov, B. V.

PY - 2008/10/9

Y1 - 2008/10/9

N2 - We analyze the interference pattern produced by ultracold atoms released from an optical lattice, commonly interpreted as the momentum distributions of the trapped quantum gas. We show that for finite times of flight the resulting density distribution can, however, be significantly altered, similar to a near-field diffraction regime in optics. We illustrate our findings with a simple model and realistic quantum Monte Carlo simulations for bosonic atoms and compare the latter to experiments.

AB - We analyze the interference pattern produced by ultracold atoms released from an optical lattice, commonly interpreted as the momentum distributions of the trapped quantum gas. We show that for finite times of flight the resulting density distribution can, however, be significantly altered, similar to a near-field diffraction regime in optics. We illustrate our findings with a simple model and realistic quantum Monte Carlo simulations for bosonic atoms and compare the latter to experiments.

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Expansion of a quantum gas released from an optical lattice

Abstract

All Science Journal Classification (ASJC) codes

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