High-Fidelity Rapid Ground-State Loading of an Ultracold Gas into an Optical Lattice

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High-Fidelity Rapid Ground-State Loading of an Ultracold Gas into an Optical Lattice

Shumpei Masuda, Katsuhiro Nakamura, and Adolfo del Campo

Phys. Rev. Lett. 113, 063003 – Published 7 August 2014

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.

Received 22 February 2014

DOI:https://doi.org/10.1103/PhysRevLett.113.063003

Authors & Affiliations

Shumpei Masuda^1,2, Katsuhiro Nakamura^3,4, and Adolfo del Campo^5,6

¹The James Franck Institute, The University of Chicago, Chicago, Illinois 60637, USA
²Department of Physics, Tohoku University, Sendai 980, Japan
³Turin Polytechnic University in Tashkent, 17 Niyazov Street, Tashkent 100095, Uzbekistan
⁴Department of Applied Physics, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
⁵Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
⁶Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA

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Issue

Vol. 113, Iss. 6 — 8 August 2014

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