Extracting density-density correlations from in situ images of atomic quantum gases

Chen Lung Hung, Xibo Zhang, Li Chung Ha, Shih Kuang Tung, Nathan Gemelke, Cheng Chin

Research output: Contribution to journalReview article

51 Citations (Scopus)

Abstract

We present a complete recipe to extract the density-density correlations and the static structure factor of a two-dimensional (2D) atomic quantum gas from in situ imaging. Using images of non-interacting thermal gases, we characterize and remove the systematic contributions of imaging aberrations to the measured density-density correlations of atomic samples. We determine the static structure factor and report the results on weakly interacting 2D Bose gases, as well as strongly interacting gases in a 2D optical lattice. In the strongly interacting regime, we observe a strong suppression of the static structure factor at long wavelengths.

Original languageEnglish (US)
Article number075019
JournalNew Journal of Physics
Volume13
DOIs
StatePublished - Jul 1 2011

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Hung, Chen Lung ; Zhang, Xibo ; Ha, Li Chung ; Tung, Shih Kuang ; Gemelke, Nathan ; Chin, Cheng. / Extracting density-density correlations from in situ images of atomic quantum gases. In: New Journal of Physics. 2011 ; Vol. 13.
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Extracting density-density correlations from in situ images of atomic quantum gases. / Hung, Chen Lung; Zhang, Xibo; Ha, Li Chung; Tung, Shih Kuang; Gemelke, Nathan; Chin, Cheng.

In: New Journal of Physics, Vol. 13, 075019, 01.07.2011.

Research output: Contribution to journalReview article

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T1 - Extracting density-density correlations from in situ images of atomic quantum gases

AU - Hung, Chen Lung

AU - Zhang, Xibo

AU - Ha, Li Chung

AU - Tung, Shih Kuang

AU - Gemelke, Nathan

AU - Chin, Cheng

PY - 2011/7/1

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N2 - We present a complete recipe to extract the density-density correlations and the static structure factor of a two-dimensional (2D) atomic quantum gas from in situ imaging. Using images of non-interacting thermal gases, we characterize and remove the systematic contributions of imaging aberrations to the measured density-density correlations of atomic samples. We determine the static structure factor and report the results on weakly interacting 2D Bose gases, as well as strongly interacting gases in a 2D optical lattice. In the strongly interacting regime, we observe a strong suppression of the static structure factor at long wavelengths.

AB - We present a complete recipe to extract the density-density correlations and the static structure factor of a two-dimensional (2D) atomic quantum gas from in situ imaging. Using images of non-interacting thermal gases, we characterize and remove the systematic contributions of imaging aberrations to the measured density-density correlations of atomic samples. We determine the static structure factor and report the results on weakly interacting 2D Bose gases, as well as strongly interacting gases in a 2D optical lattice. In the strongly interacting regime, we observe a strong suppression of the static structure factor at long wavelengths.

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