2020/03/31 by Yehoshua Winsten, Doron Cohen · 1 citation
Physics and Astronomy · #cond-mat.stat-mech #cond-mat.quant-gas
paper · pdf · doi:10.1038/s41598-021-82386-y
published as Sci Rep 11, 3136 (2021) · 15 pages, 10 figures
arxiv created 2021/02/05 · arxiv updated 2021/02/08
Quasi-static protocols for systems that feature a mixed phase-space with both chaos and quasi-regular regions are beyond the standard paradigm of adiabatic processes. We focus on a many-body system of atoms that are described by the Bose-Hubbard Hamiltonian, specifically a circuit that consists of bosonic sites. We consider a sweep process: slow variation of the rotation frequency of the device (time dependent Sagnac phase). The parametric variation of phase-space topology implies that the quasi-static limit is irreversible. Detailed analysis is essential in order to determine the outcome of such transfer protocol, and its efficiency.