Fast Preparation and Detection of a Rydberg Qubit Using Atomic Ensembles
Name
PhysRevLett.127.050501.pdf
Description
Published version
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657.04 KB
Format
Unknown
Checksum (MD5)
da42ef62604ad6b489768071d787f1d6
Author(s)
Xu, Wenchao
Venkatramani, Aditya V.
Cantú, Sergio H.
Šumarac, Tamara
Klüsener, Valentin
Lukin, Mikhail D.
Vuletić, Vladan
Date Issued
July 2021
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Xu, Wenchao, Venkatramani, Aditya V, Cantú, Sergio H, Šumarac, Tamara, Klüsener, Valentin et al. 2021. "Fast Preparation and Detection of a Rydberg Qubit Using Atomic Ensembles." Physical Review Letters, 127 (5).
Version
Final published version
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 μs with a success probability of F_{p}=0.93±0.02, rotate it, and read out its state in 6 μs with a single-shot fidelity of F_{d}=0.92±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 μs, much longer than the π 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.
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/physrevlett.127.050501
