RT Journal Article
T1 Cat states in a driven superfluid: role of signal shape and switching protocol
A1 Mateos Maroto, Jesús
A1 Pieplow, Gregor
A1 Creffield, Charles
A1 Sols Lucía, Fernando
AB We investigate the behavior of a one-dimensional Bose-Hubbard model whose kinetic energy is made to oscillate with zero time-average. The effective dynamics is governed by an atypical many-body Hamiltonian where only even-order hopping processes are allowed. At a critical value of the driving, the system passes from a Mott insulator to a superfluid formed by a cat-like superposition of two quasi-condensates with opposite non-zero momenta. We analyze the robustness of this unconventional ground state against variations of a number of system parameters. In particular we study the effect of the waveform and the switching protocol of the driving signal. Knowledge of the sensitivity of the system to these parameter variations allows us to gauge the robustness of the exotic physical behavior.
PB Springer Heidelberg
SN 1951-6355
YR 2021
FD 2021-04-14
LK https://hdl.handle.net/20.500.14352/8108
UL https://hdl.handle.net/20.500.14352/8108
LA eng
NO ©2021 Springer Heilderberg This work was supported by Spain's MINECO through Grant FIS2017-84368-P, and by the UCM through Grant FEI-EU-19-12.
NO Ministerio de Economía y Competitividad (MINECO)
NO Universidad Complutense de Madrid
DS Docta Complutense
RD 13 abr 2025