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Second-scale rotational coherence and dipolar interactions in a gas of ultracold polar molecules [dataset] Open Access
Ultracold polar molecules uniquely combine a rich structure of long-lived internal states with access to controllable long-range, anisotropic dipole-dipole interactions. In particular, the rotational states of polar molecules confined in optical tweezers or optical lattices may be used to encode interacting qubits for quantum computation or pseudo-spins for simulating quantum magnetism. As with all quantum platforms, the engineering of robust coherent superpositions of states is vital. However, for optically trapped molecules, the coherence time between rotational states is typically limited by inhomogeneous light shifts. Here we demonstrate a rotationally-magic optical trap for RbCs molecules that supports a Ramsey coherence time of 0.78(4) seconds in the absence of dipole-dipole interactions. This extends to >1.4 seconds at the 95% confidence level using a single spin-echo pulse. In our magic trap, dipolar interactions become the dominant mechanism by which Ramsey contrast is lost for superpositions that generate oscillating dipoles. By changing the states forming the superposition, we tune the effective dipole moment and show that the coherence time is inversely proportional to the strength of the dipolar interaction. Our work unlocks the full potential of the rotational degree of freedom in molecules for quantum computation and quantum simulation.
Descriptions
- Resource type
- Dataset
- Contributors
- Creator:
Gregory, Philip
1
Contact person: Gregory, Philip 1
Data collector: Gregory, Philip 1
Contact person: Cornish, Simon 1
Data collector: Fernley, Luke 1
1 Durham University
- Funder
-
Engineering and Physical Sciences Research Council
- Research methods
- Other description
-
Chiefly CSV files.
- Keyword
- RbCs molecules
- Subject
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Quantum theory
- Location
- Language
- Cited in
- doi:10.48550/arXiv.2306.02991
- Identifier
- ark:/32150/r19593tv218
doi:10.15128/r19593tv218
- Rights
- Creative Commons Attribution 4.0 International (CC BY)
- Publisher
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Durham University
- Date Created
File Details
- Depositor
- P.D. Gregory
- Date Uploaded
- 7 September 2023, 12:09:01
- Date Modified
- 8 September 2023, 11:09:02
- Audit Status
- Audits have not yet been run on this file.
- Characterization
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File format: zip (ZIP Format)
Mime type: application/zip
File size: 31252
Last modified: 2023:09:07 13:59:05+01:00
Filename: Second-scale rotational coherence and dipolar interactions in a gas of ultracold polar molecules .zip
Original checksum: 7037b56ba3e6a5bfb541f5c79bc4e433
User Activity | Date |
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User N. Syrotiuk has updated Second-scale rotational coherence and dipolar interactions in a gas of ultracold polar molecules [dataset] | about 1 year ago |