Dark-state sideband cooling in an atomic ensemble

We utilize the dark state in a ∧-type three-level system to cool an ensemble of ⁸⁵Rb atoms in an optical lattice [Morigi et al., Phys. Rev. Lett. 85, 4458 (2000)]. The common suppression of the carrier transition of atoms with different vibrational frequencies allows them to reach a subrecoil temper...

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Main Authors: Huang, Chang, Chai, Shijie, Lan, Shau-Yu
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2021
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Online Access:https://hdl.handle.net/10356/146879
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spelling sg-ntu-dr.10356-1468792023-02-28T19:27:14Z Dark-state sideband cooling in an atomic ensemble Huang, Chang Chai, Shijie Lan, Shau-Yu School of Physical and Mathematical Sciences Science::Physics Coherent Population Trapping Optical Lattices We utilize the dark state in a ∧-type three-level system to cool an ensemble of ⁸⁵Rb atoms in an optical lattice [Morigi et al., Phys. Rev. Lett. 85, 4458 (2000)]. The common suppression of the carrier transition of atoms with different vibrational frequencies allows them to reach a subrecoil temperature of 100 nK after being released from the optical lattice. A nearly zero vibrational quantum number is determined from the time-of-flight measurements and adiabatic expansion process. The features of sideband cooling are examined in various parameter spaces. Our results show that dark-state sideband cooling is a simple and compelling method for preparing a large ensemble of atoms into their vibrational ground state of a harmonic potential and can be generalized to different species of atoms and molecules for studying ultracold physics that demands recoil temperature and below. Ministry of Education (MOE) National Research Foundation (NRF) Published version This work is supported by the Singapore National Research Foundation under Grant No. NRFF2013-12 and QEP-P4, and the Singapore Ministry of Education under Grant No. MOE2017-T2-2-066. 2021-03-12T06:19:02Z 2021-03-12T06:19:02Z 2021 Journal Article Huang, C., Chai, S. & Lan, S. (2021). Dark-state sideband cooling in an atomic ensemble. Physical Review A, 103(1). https://dx.doi.org/10.1103/PhysRevA.103.013305 2469-9926 https://hdl.handle.net/10356/146879 10.1103/PhysRevA.103.013305 2-s2.0-85099119743 1 103 en NRFF2013-12 MOE2017-T2-2-066 Physical Review A © 2021 American Physical Society. All rights reserved. This paper was published in Physical Review A and is made available with permission of American Physical Society. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Science::Physics
Coherent Population Trapping
Optical Lattices
spellingShingle Science::Physics
Coherent Population Trapping
Optical Lattices
Huang, Chang
Chai, Shijie
Lan, Shau-Yu
Dark-state sideband cooling in an atomic ensemble
description We utilize the dark state in a ∧-type three-level system to cool an ensemble of ⁸⁵Rb atoms in an optical lattice [Morigi et al., Phys. Rev. Lett. 85, 4458 (2000)]. The common suppression of the carrier transition of atoms with different vibrational frequencies allows them to reach a subrecoil temperature of 100 nK after being released from the optical lattice. A nearly zero vibrational quantum number is determined from the time-of-flight measurements and adiabatic expansion process. The features of sideband cooling are examined in various parameter spaces. Our results show that dark-state sideband cooling is a simple and compelling method for preparing a large ensemble of atoms into their vibrational ground state of a harmonic potential and can be generalized to different species of atoms and molecules for studying ultracold physics that demands recoil temperature and below.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Huang, Chang
Chai, Shijie
Lan, Shau-Yu
format Article
author Huang, Chang
Chai, Shijie
Lan, Shau-Yu
author_sort Huang, Chang
title Dark-state sideband cooling in an atomic ensemble
title_short Dark-state sideband cooling in an atomic ensemble
title_full Dark-state sideband cooling in an atomic ensemble
title_fullStr Dark-state sideband cooling in an atomic ensemble
title_full_unstemmed Dark-state sideband cooling in an atomic ensemble
title_sort dark-state sideband cooling in an atomic ensemble
publishDate 2021
url https://hdl.handle.net/10356/146879
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