High-Fidelity Control and Entanglement of Rydberg-Atom Qubits
Name
PhysRevLett.121.123603.pdf
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723.87 KB
Format
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Checksum (MD5)
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Author(s)
Levine, Harry
Keesling, Alexander
Omran, Ahmed
Bernien, Hannes
Schwartz, Sylvain
Zibrov, Alexander S.
Endres, Manuel
Greiner, Markus
Lukin, Mikhail D.
Vuletic, Vladan
Date Issued
September 2018
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Levine, Harry et al. "High-Fidelity Control and Entanglement of Rydberg-Atom Qubits." Physical Review Letters 121, 12 (September 2018): 123603 © 2018 American Physical Society
Version
Final published version
Abstract
Individual neutral atoms excited to Rydberg states are a promising platform for quantum simulation and quantum information processing. However, experimental progress to date has been limited by short coherence times and relatively low gate fidelities associated with such Rydberg excitations. We report progress towards high-fidelity quantum control of Rydberg-atom qubits. Enabled by a reduction in laser phase noise, our approach yields a significant improvement in coherence properties of individual qubits. We further show that this high-fidelity control extends to the multi-particle case by preparing a two-atom entangled state with a fidelity exceeding 0.97(3), and extending its lifetime with a two-atom dynamical decoupling protocol. These advances open up new prospects for scalable quantum simulation and quantum computation with neutral atoms.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.121.123603
