Multi-state detection and spatial addressing in a microscope for ultracold molecules [dataset]

Mortlock, Jonathan  (Durham University, UK); Raghuram, Adarsh (Durham University, UK); Maddox, Benjamin (Durham University, UK); Gregory, Phillip (Durham University, UK); Cornish, Simon (Durham University, UK)

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Multi-state detection and spatial addressing in a microscope for ultracold molecules [dataset] Open Access

Precise measurement of the particle number, spatial distribution and internal state is fundamental to all proposed experiments with ultracold molecules both in bulk gases and optical lattices. Here, we demonstrate in-situ detection of individual molecules in a bulk sample of 87Rb133Cs molecules. Extending techniques from atomic quantum gas microscopy, we pin the molecules in a deep two-dimensional optical lattice and, following dissociation, collect fluorescence from the constituent atoms using a high-numerical-aperture objective. This enables detection of individual molecules up to the resolution of the sub-micron lattice spacing. Our approach provides direct access to the density distribution of small samples of molecules, allowing us to obtain precise measurements of density-dependent collisional losses. Further, by mapping two internal states of the molecule to different atomic species, we demonstrate simultaneous detection of the position and rotational state of individual molecules. Finally, we implement local addressing of the sample using a focused beam to induce a spatially-dependent light shift on the rotational transitions of the molecules.

Descriptions

Resource type: Dataset
Contributors: Creator: Mortlock, Jonathan ¹
Contact person: Mortlock, Jonathan ¹
Creator: Raghuram, Adarsh ¹
Creator: Maddox, Benjamin ¹
Creator: Gregory, Phillip ¹
Creator: Cornish, Simon ¹

¹ Durham University, UK
Funder: Engineering and Physical Sciences Research Council
Royal Society
Durham University
Research methods
Other description: More details of how the lattice reconstruction algorithm works can be found in Mortlock's thesis: https://etheses.dur.ac.uk/15441/
Keyword: Ultracold atoms
Ultracold Molecules
Quantum Gas Microscopy
Multi-state detection
RbCs
Subject: Ultracold molecules
Optical lattices
Location
Language: English
Cited in
Identifier: ark:/32150/r1d504rk42h
doi:10.15128/r1d504rk42h
Rights: Creative Commons Attribution 4.0 International (CC BY)
Publisher: Durham University
Date Created

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Depositor: J.M. Mortlock
Date Uploaded: 6 June 2025, 13:06:09
Date Modified: 13 October 2025, 14:10:36
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