Journal article
Ultracold polar molecules as qudits
- Abstract:
- We discuss how the internal structure of ultracold molecules, trapped in the motional ground state of optical tweezers, can be used to implement qudits. We explore the rotational, fine and hyperfine structure of 40Ca19F and 87Rb133Cs, which are examples of molecules with 2Σ and 1Σ electronic ground states, respectively. In each case we identify a subset of levels within a single rotational manifold suitable to implement a four-level qudit. Quantum gates can be implemented using two-photon microwave transitions via levels in a neighboring rotational manifold. We discuss limitations to the usefulness of molecular qudits, arising from off-resonant excitation and decoherence. As an example, we present a protocol for using a molecular qudit of dimension d = 4 to perform the Deutsch algorithm.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, 1.6MB, Terms of use)
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- Publisher copy:
- 10.1088/1367-2630/ab60f4
Authors
- Publisher:
- IOP Publishing
- Journal:
- New Journal of Physics More from this journal
- Volume:
- 22
- Issue:
- 1
- Pages:
- 013027
- Publication date:
- 2020-01-20
- Acceptance date:
- 2019-12-11
- DOI:
- EISSN:
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1367-2630
- Pubs id:
-
1084087
- Local pid:
-
pubs:1084087
- Deposit date:
-
2020-01-30
Terms of use
- Copyright holder:
- Sawant et al.
- Copyright date:
- 2020
- Rights statement:
- © 2020 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.
- Licence:
- Other
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