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

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 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.

15 pages, 5 figures

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• Camparison of the Hanbury Brown-Twiss effect for bosons and fermions
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Cited by in corpus (73)

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• Density Fluctuations across the Superfluid-Supersolid Phase Transition in a Dipolar Quantum Gas
• Negative quench induced excitation dynamics for ultracold bosons in one-dimensional lattices
• The Planck distribution of phonons in a Bose-Einstein condensate
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• Quench-induced resonant tunneling mechanisms of bosons in an optical lattice with harmonic confinement
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• Observation of scale invariance in two-dimensional matter-wave Townes solitons
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• Revealing single-trap condensate fragmentation by measuring density-density correlations after time of flight
• Scanning Quantum Cryogenic Atom Microscope
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• Many-body processes in black and grey matter-wave solitons
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• Roton entanglement in quenched dipolar Bose-Einstein condensates
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• Universal quantum behaviors of interacting fermions in 1D traps: from few particles to the trap thermodynamic limit
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• Dynamics of correlations in a quasi-2D dipolar Bose gas following a quantum quench
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• Critical parameters from trap-size scaling in trapped particle systems
• Beliaev Damping in Spin-$\frac{1}{2}$ Interacting Bosons with Spin-Orbit Coupling
• Dynamics of correlations in shallow optical lattices
• Trapping ultracold gases near cryogenic materials with rapid reconfigurability
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• Optimally focused cold atom systems obtained using density-density correlations
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• Relaxation of Shannon entropy for trapped interacting bosons with dipolar interactions
• Stripe and checkerboard patterns in a stack of driven quasi-one-dimensional dipolar condensates
• Spin-dependent Bragg spectroscopy of a spinor Bose gas
• A Non-Gaussian Variational Approach to Fermi Polarons in One- and Two-dimensional Lattices
• Fluctuations of spinor Bose-Einstein condensates
• Multiple-camera defocus imaging of ultracold atomic gases
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• Finite resolution fluctuation measurements of a trapped Bose-Einstein condensate
• Trapped imbalanced fermionic superfluids in one dimension: A variational approach
• Thermal-induced Local Imbalance in Repulsive Binary Bose Mixtures
• Towards a measurement of the Debye length in very large Magneto-Optical traps
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• Observation of self-oscillating supersonic flow across an acoustic horizon in two dimensions
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• Spectroscopic localization of atomic sample plane for precise digital holography
• Hyperfine Structure of Quantum Entanglement
• Non-equilibrium dynamics of an ultracold Bose gas under a multi-pulsed quantum quench in interaction
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• One-to-one correspondence between thermal structure factors and coupling constants of general bilinear Hamiltonians
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• Suppression and enhancement of bosonic stimulation by atomic interactions
• Self-Bayesian Aberration Removal via Constraints for Ultracold Atom Microscopy