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Phases of the disordered Bose-Hubbard model with attractive interactions
We study the quantum ground-state phases of the one-dimensional disordered Bose-
Hubbard model with attractive interactions, realized by a chain of superconducting transmon …
Hubbard model with attractive interactions, realized by a chain of superconducting transmon …
Effects of a rotating periodic lattice on coherent quantum states in a ring topology: The case of positive nonlinearity
H Huang, KK Das - Physical Review A, 2021 - APS
We study the landscape of solutions of the coherent quantum states in a ring-shaped lattice
potential in the context of ultracold atoms with an effective positive nonlinearity induced by …
potential in the context of ultracold atoms with an effective positive nonlinearity induced by …
Resonant persistent currents for ultracold bosons on a lattice ring
We consider a one-dimensional bosonic gas on a ring lattice, in the presence of a localized
barrier, and under the effect of an artificial gauge field. By means of exact diagonalization we …
barrier, and under the effect of an artificial gauge field. By means of exact diagonalization we …
Semiclassical theory of strong localization for quantum thermalization
We introduce a semiclassical theory for strong localization that may arise in the context of
many-body thermalization. As a minimal model for thermalization we consider a few-site …
many-body thermalization. As a minimal model for thermalization we consider a few-site …
Quantum irreversibility of quasistatic protocols for finite-size quantized systems
Quantum mechanically, a driving process is expected to be reversible in the quasistatic limit,
also known as the adiabatic theorem. This statement stands in opposition to classical …
also known as the adiabatic theorem. This statement stands in opposition to classical …
Monodromy and chaos for condensed bosons in optical lattices
We introduce a theory for the stability of a condensate in an optical lattice. We show that the
understanding of the stability-to-ergodicity transition involves the fusion of monodromy and …
understanding of the stability-to-ergodicity transition involves the fusion of monodromy and …
Chaos-induced breakdown of Bose-Hubbard modeling
We show that the Bose-Hubbard approximation fails due to the emergence of chaos, even
when excited modes are far detuned and the standard validity condition is satisfied. This is …
when excited modes are far detuned and the standard validity condition is satisfied. This is …
Generating accessible entanglement in bosons via pair-correlated tunneling
We consider an extended Bose-Hubbard model that includes pair-correlated tunneling. We
demonstrate that a minimal four-mode implementation of this model exhibits a pair …
demonstrate that a minimal four-mode implementation of this model exhibits a pair …
Theoretical description of atomtronic Josephson junctions in an optical lattice
Experimental realizations of``atomtronic" Josephson junctions have recently been created in
annular traps in relative rotation with respect to potential barriers that generate the weak …
annular traps in relative rotation with respect to potential barriers that generate the weak …
Chaos onset in large rings of Bose-Einstein condensates
We consider large rings of weakly coupled Bose-Einstein condensates, analyzing their
transition to chaotic dynamics and loss of coherence. Initially, a ring is considered to be in an …
transition to chaotic dynamics and loss of coherence. Initially, a ring is considered to be in an …