Few-body Bose gases in low dimensions—A laboratory for quantum dynamics
Cold atomic gases have become a paradigmatic system for exploring fundamental physics,
which at the same time allows for applications in quantum technologies. The accelerating …
which at the same time allows for applications in quantum technologies. The accelerating …
Excited-state quantum phase transitions
We review the effects of excited-state quantum phase transitions (ESQPTs) in interacting
many-body systems with finite numbers of collective degrees of freedom. We classify typical …
many-body systems with finite numbers of collective degrees of freedom. We classify typical …
Observation of a dissipation-induced classical to quantum transition
Here, we report the experimental observation of a dynamical quantum phase transition in a
strongly interacting open photonic system. The system studied, comprising a Jaynes …
strongly interacting open photonic system. The system studied, comprising a Jaynes …
Nonlinear dynamics in a synthetic momentum-state lattice
The scope of analog simulation in atomic, molecular, and optical systems has expanded
greatly over the past decades. Recently, the idea of synthetic dimensions—in which …
greatly over the past decades. Recently, the idea of synthetic dimensions—in which …
Spread complexity and dynamical transition in multimode Bose-Einstein condensates
B Zhou, S Chen - Physical Review B, 2024 - APS
We study the spread complexity in two-mode Bose-Einstein condensates and unveil that the
long-time average of the spread complexity C¯ K can probe the dynamical transition from …
long-time average of the spread complexity C¯ K can probe the dynamical transition from …
Excited-state quantum phase transitions in many-body systems with infinite-range interaction: Localization, dynamics, and bifurcation
Excited-state quantum phase transitions (ESQPTs) are generalizations of quantum phase
transitions to excited levels. They are associated with local divergences in the density of …
transitions to excited levels. They are associated with local divergences in the density of …
Cold bosons in optical lattices: a tutorial for exact diagonalization
Exact diagonalization (ED) techniques are a powerful method for studying many-body
problems. Here, we apply this method to systems of few bosons in an optical lattice, and use …
problems. Here, we apply this method to systems of few bosons in an optical lattice, and use …
Dynamic generation of spin-squeezed states in bosonic Josephson junctions
We analyze the formation of squeezed states in a condensate of ultracold bosonic atoms
confined by a double-well potential. The emphasis is set on the dynamical formation of such …
confined by a double-well potential. The emphasis is set on the dynamical formation of such …
Chaos and quantum scars in Bose-Josephson junction coupled to a bosonic mode
We consider a model describing Bose-Josephson junction (BJJ) coupled to a single bosonic
mode exhibiting quantum phase transition (QPT). Onset of chaos above QPT is observed …
mode exhibiting quantum phase transition (QPT). Onset of chaos above QPT is observed …
Coherence and entanglement in the ground state of a bosonic Josephson junction: From macroscopic Schrödinger cat states to separable Fock states
We consider a bosonic Josephson junction made of N ultracold and dilute atoms confined
by a quasi-one-dimensional double-well potential within the two-site Bose-Hubbard model …
by a quasi-one-dimensional double-well potential within the two-site Bose-Hubbard model …