Fast Preparation and Detection of a Rydberg Qubit Using Atomic Ensembles

Xu W, Venkatramani AV, Cantu SH, Sumarac T, Kluesener V, Lukin MD, Vuletic V (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Physical Review Letters American Physical Society

Book Volume: 127

Article Number: 050501

Journal Issue: 5

DOI: 10.1103/PhysRevLett.127.050501

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 Fp=0.93±0.02, rotate it, and read out its state in 6 μs with a single-shot fidelity of Fd=0.92±0.04. The ensemble-assisted detection is 103 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.

Additional Organisation(s)

Quantum Optics & Quantum Information

Involved external institutions

Massachusetts Institute of Technology (MIT) US United States (USA) (US) Harvard University US United States (USA) (US)

How to cite

APA:

Xu, W., Venkatramani, A.V., Cantu, S.H., Sumarac, T., Kluesener, V., Lukin, M.D., & Vuletic, V. (2021). Fast Preparation and Detection of a Rydberg Qubit Using Atomic Ensembles. Physical Review Letters, 127(5). https://dx.doi.org/10.1103/PhysRevLett.127.050501

MLA:

Xu, Wenchao, et al. "Fast Preparation and Detection of a Rydberg Qubit Using Atomic Ensembles." Physical Review Letters 127.5 (2021).

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