title: High-fidelity rapid ground-state loading of an ultracold gas into an optical lattice.
abstract: A protocol is proposed for the rapid coherent loading of a Bose-Einstein condensate into the ground state of an optical lattice, without residual excitation associated with the breakdown of adiabaticity. The driving potential required to assist the rapid loading is derived using the fast-forward technique, and generates the ground state in any desired short time. We propose an experimentally feasible loading scheme using a bichromatic lattice potential, which approximates the fast-forward driving potential with high fidelity.
authors.affiliation: The James Franck Institute, The University of Chicago, Chicago, Illinois 60637, USA and Department of Physics, Tohoku University, Sendai 980, Japan.
authors.forename: Shumpei
authors.initials: S
authors.lastname: Masuda
authors.affiliation: Turin Polytechnic University in Tashkent, 17 Niyazov Street, Tashkent 100095, Uzbekistan and Department of Applied Physics, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan.
authors.forename: Katsuhiro
authors.initials: K
authors.lastname: Nakamura
authors.affiliation: Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: Adolfo
authors.initials: A
authors.lastname: del Campo