Please use this identifier to cite or link to this item: https://doi.org/10.1088/1367-2630/ab60f4
Title: Ultracold polar molecules as qudits
Authors: Sawant, R.
Blackmore, J.A.
Gregory, P.D.
Mur-Petit, J.
Jaksch, D. 
Aldegunde, J.
Hutson, J.M.
Tarbutt, M.R.
Cornish, S.L.
Keywords: coherence
quantum computation
qudits
ultracold molecules
Issue Date: 2020
Publisher: Institute of Physics Publishing
Citation: Sawant, R., Blackmore, J.A., Gregory, P.D., Mur-Petit, J., Jaksch, D., Aldegunde, J., Hutson, J.M., Tarbutt, M.R., Cornish, S.L. (2020). Ultracold polar molecules as qudits. New Journal of Physics 22 (1) : 13027. ScholarBank@NUS Repository. https://doi.org/10.1088/1367-2630/ab60f4
Rights: Attribution 4.0 International
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 2? and 1? 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. © 2020 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft.
Source Title: New Journal of Physics
URI: https://scholarbank.nus.edu.sg/handle/10635/198049
ISSN: 1367-2630
DOI: 10.1088/1367-2630/ab60f4
Rights: Attribution 4.0 International
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