656 papers
This category explores the fascinating world of quantum gases, where scientists cool atoms to temperatures near absolute zero to create exotic states of matter. In these extreme conditions, individual atoms begin to behave like a single giant wave, revealing strange quantum effects that are usually hidden in our everyday warm world. These experiments help researchers understand the fundamental rules governing matter and could one day lead to revolutionary new technologies like ultra-precise sensors or quantum computers.
On Gist.Science, we process every new preprint in this field directly from arXiv to make these complex discoveries accessible to everyone. Our team provides both plain-language overviews for the curious mind and detailed technical summaries for experts, ensuring you get the full picture without getting lost in the jargon. Below are the latest papers from arXiv in Cond-Mat — Quant-Gas, freshly summarized and ready for you to explore.
This chapter reviews theoretical and experimental advances in generating and observing extreme nonlinear wave events, known as rogue waves, within ultracold quantum gases by connecting exact integrable solutions to controllable dynamics in non-integrable many-body systems and highlighting their broader relevance across diverse physical settings.
This combined experimental and theoretical study of ultracold Bose gases in one-dimensional optical lattices reveals that while phase coherence in deep lattices aligns with zero-temperature predictions, the observed reduction in effective temperature at higher lattice depths is not due to cooling but rather results from the inhibition of thermalization caused by Mott domain formation, which paradoxically facilitates the preparation of low-entropy quantum gases in the trap center.
This paper proposes a scheme for simulating single-qubit gates in spin-orbit coupled Bose-Einstein condensates with cubic-quintic nonlinearity, demonstrating that specific nonlinear perturbations can induce distinct rotations on the Bloch sphere to realize various quantum logic operations.
This paper provides a pedagogical analysis of the singular band structures in one-dimensional topological normal and superfluid fermionic systems, demonstrating how nonanalyticities in Bloch eigenfunctions lead to obstructions in symmetric Wannier functions and bulk-boundary correspondence through detailed examinations of both noninteracting and interacting cases.
This paper reports the first experimental observation of Bell correlations in the motional states of momentum-entangled ultracold helium-4 atoms, demonstrating a violation of Bell's inequality for massive particles and opening new avenues for fundamental quantum and gravitational research.
This paper investigates tilt-induced localization transitions in interacting Bose-Einstein condensates across different lattice regimes using the Gross-Pitaevskii equation and Bose-Hubbard model, demonstrating that the condensate wavefunction can effectively probe quantum criticality and serve as a resource for quantum-enhanced precision gradient sensing.
This paper investigates the out-of-equilibrium dynamics of a driven one-dimensional Bose gas, demonstrating that it transitions from a weakly interacting soliton regime to a strongly turbulent state at high driving amplitudes, with each phase distinguished by unique power-law decays in the momentum distribution.
This study utilizes numerical exact diagonalization to demonstrate that strong quasiperiodic modulation of long-range interactions in a one-dimensional lattice of two identical spinless fermions induces a robust correlated dynamical regime characterized by constant inter-particle distance, suppressed entanglement, and distinct separation behaviors dependent on boundary conditions and initial states.
This paper introduces the Neural Operator Quantum State (NOQS), a foundation model that learns the solution operator mapping entire driving protocols to time-evolved quantum states, enabling efficient, single-pass predictions for both in-distribution and out-of-distribution dynamics without re-optimization.
This study demonstrates that repulsive three-body interactions combined with binary interactions enable the formation of dynamically stable vortices in exciton-polariton condensates, whereas attractive three-body interactions promote snake instability and vortex disintegration.