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Long-lived multilevel coherences and spin-1 dynamics encoded in the rotational states of ultracold molecules [dataset] Open Access

Rotational states of ultracold polar molecules possess long lifetimes, microwave-domain coupling, and tunable dipolar interactions. The availability of numerous rotational states has inspired many applications, including simulating quantum magnetism, encoding high-dimensional qudits and generating large synthetic dimensions. However, engineering the coherent superpositions of multiple rotational states needed for these applications is difficult owing to strong differential light shifts. Here, we overcome this challenge using individual molecules confined in near-magic wavelength optical tweezers. Through precision Ramsey spectroscopy, we find the exact magic wavelengths and sensitivities to detuning errors for multiple rotational state superpositions. We find for traps polarised parallel to the quantisation axis, the magic wavelengths are closely clustered enabling long-lived coherence across multiple rotational states simultaneously. Using a generalised Ramsey sequence, we demonstrate second-scale coherent spin-1 dynamics encoded in three rotational states and perform multiparameter estimation. With modest experimental improvements, we predict second-scale coherence across ten rotational states is achievable.

Descriptions

Resource type

Dataset

Contributors

Creator: Hepworth, Tom R. ¹
Data collector: Ruttley, Dan K. ¹
Data collector: von Gierke, Fritz ¹
Data collector: Gregory, Phil D. ¹
Data collector: Guttridge, Alexander ¹
Data collector: Cornish, Simon L. ¹

¹ Durham, United Kingdom

Funder

Engineering and Physical Sciences Research Council
Royal Society
Durham University
UKRI Frontier Research Grant

Research methods

Other description

Keyword

Ultracold molecules
Coherent states
Optical Tweezers
Physics
Quantum systems
Quantum-enhanced metrology

Subject

Ultracold molecules
Coherent states
Optical Tweezers
Physics
Quantum systems

Location

Language

Cited in

doi:10.48550/arXiv.2412.15088

Identifier

ark:/32150/r2kk91fk55v
doi:10.15128/r2kk91fk55v

Rights

Creative Commons Attribution 4.0 International (CC BY)

Publisher

Durham University

Date Created

File Details

Depositor

T.R. Hepworth

Date Uploaded

12 December 2024, 16:12:26

Date Modified

15 July 2025, 13:07:14

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File format: zip (ZIP Format)

Mime type: application/zip

File size: 10586083

Last modified: 2025:07:15 12:56:21+01:00

Filename: dataset.zip

Original checksum: 4a9b517b2717f24da62e2577eccf43aa