Preparation of one 87Rb and one 133Cs atom in a single optical tweezer [dataset]

Cornish, Simon (Department of Physics, Durham University, UK); Brooks, Vincent (Department of Physics, Durham University, UK); Alampounti, Alexandros (Department of Physics, Durham University, UK); Guttridge, Alexander (Department of Physics, Durham University, UK); Hutson, Jeremy  (Department of Chemistry, Durham University, UK); Spence, Stefan (Department of Physics, Durham University, UK); Rakonjac, Ana (Department of Physics, Durham University, UK); McArd, Lewis (Department of Physics, Durham University, UK)

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Preparation of one 87Rb and one 133Cs atom in a single optical tweezer [dataset] Open Access

We report the preparation of exactly one 87Rb atom and one 133Cs atom in the same optical tweezer as the essential first step towards the construction of a tweezer array of individually trapped 87Rb133Cs molecules. Through careful selection of the tweezer wavelengths, we show how to engineer species-selective trapping potentials suitable for high-fidelity preparation of Rb + Cs atom pairs. Using a wavelength of 814 nm to trap Rb and 938 nm to trap Cs, we achieve loading probabilities of 0.508(6) for Rb and 0.547(6) for Cs using standard red-detuned molasses cooling. Loading the traps sequentially yields exactly one Rb and one Cs atom in 28.4(6) % of experimental runs. Using a combination of an acousto-optic deflector and a piezo-controlled mirror to control the relative position of the tweezers, we merge the two tweezers, retaining the atom pair with a probability of 0.99(+0.01)(−0.02).We use this capability to study hyperfine-state-dependent collisions of Rb and Cs in the combined tweezer and compare the measured two-body loss rates with coupled-channel quantum scattering calculations.

Descriptions

Resource type: Dataset
Contributors: Creator: Brooks, Vincent ¹
Spence, Stefan ¹
Guttridge, Alexander ¹
Alampounti, Alexandros ¹
Rakonjac, Ana ¹
McArd, Lewis ¹
Hutson, Jeremy ²
Contact person: Cornish, Simon ¹

¹ Department of Physics, Durham University, UK
² Department of Chemistry, Durham University, UK
Funder: Engineering and Physical Sciences Research Council
Research methods
Other description
Keyword: Optical tweezers
Cold atoms
RbCs
Cold molecules
Laser cooling
Subject: Optical tweezers
Location
Language: English
Cited in
Identifier: ark:/32150/r1k3569440m
doi:10.15128/r1k3569440m
Rights: Creative Commons Attribution 4.0 International (CC BY)
Publisher: Durham University
Date Created: 07/04/2021

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Depositor: R.V. Brooks
Date Uploaded: 7 April 2021, 15:04:48
Date Modified: 8 April 2021, 11:04:12
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Last modified: 2021:04:07 16:46:59+01:00

Filename: Preparation of one 87Rb and one 133Cs atom in a single optical tweezer.zip

Original checksum: 2efd076ce3ce9f433afc4d25603b3971

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User N. Syrotiuk has updated Preparation of one 87Rb and one 133Cs atom in a single optical tweezer [dataset]	over 3 years ago
User N. Syrotiuk has updated Preparation of one 87Rb and one 133Cs atom in a single optical tweezer [dataset]	over 3 years ago
User R.V. Brooks has updated Preparation of one 87Rb and one 133Cs atom in a single optical tweezer [dataset]	over 3 years ago
User R.V. Brooks has updated Preparation of one 87Rb and one 133Cs atom in a single optical tweezer dataset	over 3 years ago
User R.V. Brooks has updated Preparation of one 87Rb and one 133Cs atom in a single optical tweezer.zip	over 3 years ago
User R.V. Brooks has deposited Preparation of one 87Rb and one 133Cs atom in a single optical tweezer.zip	over 3 years ago