Work

Degree of simplicity of Floquet states of a periodically driven Bose-Hubbard dimer

Year: 2025

Type: article

Abstract: We demonstrate longtime coherent subharmonic motion of a many-boson system subjected to an external time-periodic driving force. The underlying mechanism is exemplified numerically through analysis of a periodically driven Bose-Hubbard dimer, and clarified conceptually by semiclassical requantization of invariant tubes pertaining to the system’s mean-field description. In this way, one arrives at pre-Floquet states that relate to the actual many-body Floquet states in a manner similar to the relation of site-localized Wannier states to lattice-extended Bloch states in solid-state physics. It is argued that even high-order subharmonic response can be systematically engineered, and be observed experimentally, with weakly interacting Floquet condensates comprising a sufficiently large number of particles.

Source: Physical Review Research

DOI: 10.1103/nqg9-788r

Authors: Steffen Seligmann, Hamed Koochaki Kelardeh, Martin Holthaus

Institution: Carl von Ossietzky Universität Oldenburg

Language: English

Topic: Cold Atom Physics and Bose-Einstein Condensates

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,625

Funder: Deutsche Forschungsgemeinschaft