Ground-state quantum Monte Carlo calculations demonstrate scale invariance of the polaron energy at the Mott-superfluid critical point in a lattice Bose gas and extract an unexplained scaling exponent.
Quantum-gas microscopy and Talbot interferometry of the Bose-glass phase
3 Pith papers cite this work. Polarity classification is still indexing.
abstract
Disordered potentials fundamentally affect transport and coherence in quantum systems, giving rise to a Bose-glass phase in interacting bosonic systems -- an insulating yet compressible phase lacking long-range coherence. Directly measuring a reduced coherence length of the Bose glass has been an outstanding challenge. We address this by employing Talbot interferometry combined with single-atom-resolved detection in a quantum-gas microscope. Using ultracold bosonic atoms in a two-dimensional lattice with site-resolved, reproducible disorder, we identify the Bose-glass phase through in-situ density distributions and particle-number fluctuations, quantified via the Edwards-Anderson parameter, and through the visibility of interference patterns after time-of-flight. By driving the system across the Bose-glass phase, we further observe signatures of non-ergodic dynamics. Our studies provide a starting point to further explore disordered systems in and out of equilibrium, and are relevant for understanding the dynamics and stability of disordered and glass-like quantum states in solid-state systems.
representative citing papers
Experimental identification of the Bose-glass phase in a disordered 2D optical lattice using single-atom imaging, Edwards-Anderson parameter, and Talbot interferometry visibility.
Diffusion maps identify quantum phase transitions in Bose-Hubbard systems, including symmetry-protected topological phases and ergodic vs. many-body localized regimes, without prior order parameters or handcrafted observables.
citing papers explorer
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Scale invariance of the polaron energy at the Mott-superfluid critical point
Ground-state quantum Monte Carlo calculations demonstrate scale invariance of the polaron energy at the Mott-superfluid critical point in a lattice Bose gas and extract an unexplained scaling exponent.
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Quantum-gas microscopy and Talbot interferometry of the Bose-glass phase
Experimental identification of the Bose-glass phase in a disordered 2D optical lattice using single-atom imaging, Edwards-Anderson parameter, and Talbot interferometry visibility.
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Unsupervised Learning of Quantum Phase Transitions for Bose-Hubbard lattice systems
Diffusion maps identify quantum phase transitions in Bose-Hubbard systems, including symmetry-protected topological phases and ergodic vs. many-body localized regimes, without prior order parameters or handcrafted observables.