Hanbury-Brown and Twiss bunching of phonons and of the quantum depletion in a strongly-interacting Bose gas
arXiv:2006.11792 · doi:10.1103/PhysRevLett.125.165301
Abstract
We report the realisation of a Hanbury-Brown and Twiss (HBT)-like experiment with a gas of strongly interacting bosons at low temperatures. The regime of large interactions and low temperatures is reached in a three-dimensional optical lattice and atom-atom correlations are extracted from the detection of individual metastable Helium atoms after a long free-fall. We observe a HBT bunching in the non-condensed fraction of the gas whose properties strongly deviate from the HBT signals expected for non-interacting bosons. In addition, we show that the measured correlations reflect the peculiar quantum statistics of atoms belonging to the quantum depletion and of the Bogoliubov phonons, i.e., of collective excitations of the many-body quantum state. Our results demonstrate that atom-atom correlations provide information about the quantum state of strongly-interacting particles, extending the interest of HBT-like experiments beyond the case of non-interacting particles.
arXiv comment10 pages, 7 figures
References in corpus (22)
- Quantum fluids of light
- Probing many-body states of ultra-cold atoms via noise correlations
- Spatial quantum noise interferometry in expanding ultracold atom clouds
- Camparison of the Hanbury Brown-Twiss effect for bosons and fermions
- Hanbury Brown Twiss effect for ultracold quantum gases
- Correlations and Counting Statistics of an Atom Laser
- Spatial coherence and density correlations of trapped Bose gases
- Free fermion antibunching in a degenerate atomic Fermi gas released from an optical lattice
- Ground state of a homogeneous Bose gas: a diffusion Monte Carlo calculation
- Quantum depletion of a homogeneous Bose-Einstein condensate
- Macroscopic dynamics of a trapped Bose-Einstein condensate in the presence of 1D and 2D optical lattices
- Hanbury Brown and Twiss correlations across the Bose-Einstein condensation threshold
- Ideal n-body correlations with massive particles
- Noise Correlations in low-dimensional systems of ultracold atoms
- Theory of correlations between ultra-cold bosons released from an optical lattice
- High-Contrast Interference of Ultracold Fermions
- Single-atom-resolved probing of lattice gases in momentum space
- Hanbury Brown and Twiss correlations in atoms scattered from colliding condensates
- Momentum-space atom correlations in a Mott insulator
- Two-body collisions in the time-of-flight dynamics of lattice Bose superfluids
- Thermal counting statistics in an atomic two-mode squeezed vacuum state
- Hanburry Brown and Twiss, Hong Ou and Mandel effects and other landmarks in Quantum Optics: from photons to atoms
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