Shortcut to adiabaticity in spinor condensates
Quantum Gases
2016-11-03 v1
Abstract
We devise a method to shortcut the adiabatic evolution of a spin-1 Bose gas with an external magnetic field as the control parameter. An initial many-body state with almost all bosons populating the Zeeman sublevel , is evolved to a final state very close to a macroscopic spin-singlet condensate, a fragmented state with three macroscopically occupied Zeeman states. The shortcut protocol, obtained by an approximate mapping to a harmonic oscillator Hamiltonian, is compared to linear and exponential variations of the control parameter. We find a dramatic speedup of the dynamics when using the shortcut protocol.
Cite
@article{arxiv.1607.04119,
title = {Shortcut to adiabaticity in spinor condensates},
author = {Arnau Sala and David López Núñez and Joan Martorell and Luigi De Sarlo and Tilman Zibold and Fabrice Gerbier and Artur Polls and Bruno Juliá-Díaz},
journal= {arXiv preprint arXiv:1607.04119},
year = {2016}
}
Comments
10 pages, 7 figures