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Dispersive optical systems for scalable Raman driving of hyperfine qubits

Levine, Harry and Bluvstein, Dolev and Keesling, Alexander and Wang, Tout T. and Ebadi, Sepehr and Semeghini, Giulia and Omran, Ahmed and Greiner, Markus and Vuletić, Vladan and Lukin, Mikhail D. (2022) Dispersive optical systems for scalable Raman driving of hyperfine qubits. Physical Review A, 105 (3). Art. No. 032618. ISSN 2469-9926. doi:10.1103/physreva.105.032618.

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Hyperfine atomic states are among the most promising candidates for qubit encoding in quantum information processing. In atomic systems, hyperfine transitions are typically driven through a two-photon Raman process by a laser field which is amplitude modulated at the hyperfine qubit frequency. Here we introduce a method for generating amplitude modulation by phase modulating a laser and reflecting it from a highly dispersive optical element known as a chirped Bragg grating. This approach is passively stable, offers high efficiency, and is compatible with high-power laser sources, enabling large Rabi frequencies and improved quantum coherence. We benchmark this approach by globally driving an array of approximately 300 neutral ⁸⁷Rb atomic qubits trapped in optical tweezers and obtain Rabi frequencies of 2 MHz with photon-scattering error rates of less than 2 × 10⁻⁴ per π pulse. This robust approach can be directly integrated with local addressing optics in both neutral atom and trapped ion systems to facilitate high-fidelity single-qubit operations for quantum information processing.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Levine, Harry0000-0001-8270-3233
Bluvstein, Dolev0000-0002-9934-9530
Keesling, Alexander0000-0003-3931-0949
Wang, Tout T.0000-0003-3107-2579
Ebadi, Sepehr0000-0003-4146-3637
Semeghini, Giulia0000-0001-9071-2279
Omran, Ahmed0000-0002-2253-0278
Greiner, Markus0000-0002-2935-2363
Vuletić, Vladan0000-0002-9786-0538
Lukin, Mikhail D.0000-0002-8658-1007
Additional Information:© 2022 American Physical Society. (Received 28 November 2021; accepted 1 March 2022; published 29 March 2022) We thank many members of the Harvard AMO community, particularly E. Urbach, S. Dakoulas, and J. Doyle for their efforts enabling operation of our laboratories. We additionally thank M. Endres, B. Buscaino, L. Kendrick, P. Samutpraphoot, and W. Campbell for helpful discussions. We acknowledge financial support from the Center for Ultracold Atoms, the National Science Foundation, the U.S. Department of Energy (through Grant No. DE-SC0021013 and LBNL QSA Center), the Army Research Office, ARO MURI, and the DARPA ONISQ program. H.L. acknowledges support from the National Defense Science and Engineering Graduate Fellowship. D.B. acknowledges support from the NSF Graduate Research Fellowship Program (Grant No. DGE1745303) and the Fannie and John Hertz Foundation. G.S. acknowledges support from a fellowship from the Max Planck Harvard Research Center for Quantum Optics. M.G., V.V., and M.D.L. are cofounders and shareholders of QuEra Computing. A.K. and A.O. are shareholders of QuEra Computing.
Group:AWS Center for Quantum Computing
Funding AgencyGrant Number
Harvard-MIT Center for Ultracold AtomsUNSPECIFIED
Department of Energy (DOE)DE-SC0021013
Lawrence Berkeley National LaboratoryUNSPECIFIED
Army Research Office (ARO)UNSPECIFIED
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
National Defense Science and Engineering Graduate (NDSEG) FellowshipUNSPECIFIED
NSF Graduate Research FellowshipDGE-1745303
Fannie and John Hertz FoundationUNSPECIFIED
Issue or Number:3
Record Number:CaltechAUTHORS:20220520-231737000
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:114856
Deposited By: George Porter
Deposited On:24 May 2022 17:43
Last Modified:24 May 2022 17:43

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