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Loading and cooling in an optical trap via hyperfine dark states

Loading and cooling in an optical trap via hyperfine dark states
Loading and cooling in an optical trap via hyperfine dark states
We present an optical cooling scheme that relies on hyperfine dark states to enhance loading and cooling atoms inside deep optical dipole traps. We demonstrate a sevenfold increase in the number of atoms loaded in the conservative potential with strongly shifted excited states. In addition, we use the energy selective dark state to efficiently cool the atoms trapped inside the conservative potential rapidly and without losses. Our findings open
the door to optically assisted cooling of trapped atoms and molecules which lack the closed cycling transitions normally needed to achieve low temperatures and the high initial densities required for evaporative cooling.
2643-1564
Naik, D.S.
fa20798f-c873-4095-83bd-6e8f416c713d
Eneriz-imaz, Hodei
113b22dd-466b-4d96-9e7b-9301d111dcb3
Carey, Max
c2b2911d-e3a9-4537-b16e-9bbfd3b68c6c
Freegarde, Timothy
01a5f53b-d406-44fb-a166-d8da9128ea7d
Minardi, Francesco
7eba23ee-18ad-4e10-9d02-a63cb6ed85d8
Battelier, Baptiste
65c5c8a5-bb31-45ea-b4d9-ebdd8bf34634
Bouyer, Philippe
79553644-f7d3-47ef-8e84-672def27b5db
Bertoldi, Andrea
6acfaa7e-6feb-4c9f-b158-7b4c828b0cd1
Naik, D.S.
fa20798f-c873-4095-83bd-6e8f416c713d
Eneriz-imaz, Hodei
113b22dd-466b-4d96-9e7b-9301d111dcb3
Carey, Max
c2b2911d-e3a9-4537-b16e-9bbfd3b68c6c
Freegarde, Timothy
01a5f53b-d406-44fb-a166-d8da9128ea7d
Minardi, Francesco
7eba23ee-18ad-4e10-9d02-a63cb6ed85d8
Battelier, Baptiste
65c5c8a5-bb31-45ea-b4d9-ebdd8bf34634
Bouyer, Philippe
79553644-f7d3-47ef-8e84-672def27b5db
Bertoldi, Andrea
6acfaa7e-6feb-4c9f-b158-7b4c828b0cd1

Naik, D.S., Eneriz-imaz, Hodei, Carey, Max, Freegarde, Timothy, Minardi, Francesco, Battelier, Baptiste, Bouyer, Philippe and Bertoldi, Andrea (2020) Loading and cooling in an optical trap via hyperfine dark states. Physical Review Research, 2 (1), [013212]. (doi:10.1103/PhysRevResearch.2.013212).

Record type: Article

Abstract

We present an optical cooling scheme that relies on hyperfine dark states to enhance loading and cooling atoms inside deep optical dipole traps. We demonstrate a sevenfold increase in the number of atoms loaded in the conservative potential with strongly shifted excited states. In addition, we use the energy selective dark state to efficiently cool the atoms trapped inside the conservative potential rapidly and without losses. Our findings open
the door to optically assisted cooling of trapped atoms and molecules which lack the closed cycling transitions normally needed to achieve low temperatures and the high initial densities required for evaporative cooling.

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Accepted/In Press date: 28 January 2020
Published date: 26 February 2020

Identifiers

Local EPrints ID: 439032
URI: http://eprints.soton.ac.uk/id/eprint/439032
ISSN: 2643-1564
PURE UUID: 881c1590-9fe8-4806-b8e5-d572d4e92303
ORCID for Timothy Freegarde: ORCID iD orcid.org/0000-0002-0680-1330

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Date deposited: 01 Apr 2020 16:32
Last modified: 18 Feb 2021 17:01

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Contributors

Author: D.S. Naik
Author: Hodei Eneriz-imaz
Author: Max Carey
Author: Francesco Minardi
Author: Baptiste Battelier
Author: Philippe Bouyer
Author: Andrea Bertoldi

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