Cited by 64Cold Atom Physics and Bose-Einstein CondensatesQuantum Information and CryptographyQuantum optics and atomic interactions

Fast Preparation and Detection of a Rydberg Qubit Using Atomic Ensembles

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Xu, Wenchao, Venkatramani, Aditya V., Cantú, Sergio H., Šumarac, Tamara, Klüsener, Valentin, Lukin, Mikhail D., Vuletić, Vladan·2021·Physical Review Letters

Abstract

We demonstrate a new approach for fast preparation, manipulation, and collective readout of an atomic Rydberg-state qubit. By making use of Rydberg blockade inside a small atomic ensemble, we prepare a single qubit within $3\text{ }\text{ }\ensuremath{\mu}\mathrm{s}$ with a success probability of ${F}_{p}=0.93\ifmmode\pm\else\textpm\fi{}0.02$, rotate it, and read out its state in $6\text{ }\text{ }\ensuremath{\mu}\mathrm{s}$ with a single-shot fidelity of ${F}_{d}=0.92\ifmmode\pm\else\textpm\fi{}0.04$. The ensemble-assisted detection is ${10}^{3}$ times faster than imaging of a single atom with the same optical resolution, and enables fast repeated nondestructive measurement. We observe qubit coherence times of $15\text{ }\text{ }\ensuremath{\mu}\mathrm{s}$, much longer than the $\ensuremath{\pi}$ rotation time of 90 ns. Potential applications ranging from faster quantum information processing in atom arrays to efficient implementation of quantum error correction are discussed.

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Crossref · 10.1103/physrevlett.127.050501

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Authors
Xu, W., Venkatramani, A. V., Cantú, S. H., Šumarac, T., Klüsener, V., Lukin, M. D., & Vuletić, V.
Affiliations
  • Massachusetts Institute of Technology (US)
  • Harvard University (US)
  • Department of Physics and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
  • Friedrich-Alexander-Universität Erlangen-Nürnberg (DE)
Venue
Physical Review Letters
Published
2021-07-27
Volume
127
Issue
5
Pages
050501-050501
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W3164415272
Cited by
64
References
55
Citations by year
2026: 8 · 2025: 20 · 2024: 8 · 2023: 15 · 2022: 12 · 2021: 1
FWCI
3.93
Type
journal article
Language
en
Open access
Locations
  • Physical Review Letters (publishedVersion)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc)
  • arXiv (Cornell University)
Funders
  • National Science Foundation
  • Army Research Office
  • Army Research Laboratory
  • Air Force Office of Scientific Research
  • Defense Advanced Research Projects Agency
  • U.S. Department of Energy
  • Boeing
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Cold Atom Physics and Bose-Einstein Condensates
  • Physical Sciences › Computer Science › Artificial Intelligence › Quantum Information and Cryptography
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum optics and atomic interactions
Keywords
Rydberg blockade, atomic ensembles, qubit readout, single-shot measurement, non-destructive measurement, qubit coherence time, atom arrays, quantum error correction

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