Demonstration of a Neutral Atom Controlled-NOT Quantum Gate
Open accessAbstract
We present the first demonstration of a CNOT gate between two individually addressed neutral atoms. Our implementation of the CNOT uses Rydberg blockade interactions between neutral atoms held in optical traps separated by >8 microm. Using two different gate protocols we measure CNOT fidelities of F=0.73 and 0.72 based on truth table probabilities. The gate was used to generate Bell states with fidelity F=0.48+/-0.06. After correcting for atom loss we obtain an a posteriori entanglement fidelity of F=0.58.
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The necessary interaction for two-qubit gates in neutral atom quantum computers is realised by exciting atoms to Rydberg states.
“The necessary interaction is realised by exciting atoms to states with very high energy, called Rydberg states [34][35][36].”
From Neutral atom quantum computing hardware: performance and end-user perspective (2023) · cites this paper as [34]
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- Authors
- Isenhower, L., Urban, E., Zhang, X. L., Gill, A. T., Henage, T., Johnson, T. A., Walker, T. G., & Saffman, M.
- Affiliations
- University of Wisconsin–Madison (US)
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2010-01-08
- Volume
- 104
- Issue
- 1
- Pages
- 010503-010503
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2134477962
- Cited by
- 848
- References
- 5
- Citations by year
- 2026: 36 · 2025: 47 · 2024: 35 · 2023: 42 · 2022: 44 · 2021: 38 · 2020: 54 · 2019: 81 · 2018: 50 · 2017: 42 · 2016: 58 · 2015: 45 · 2014: 54 · 2013: 46 · 2012: 65
- FWCI
- 37.73
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- 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
- CNOT gate, neutral atoms, Rydberg blockade, optical tweezers, quantum gates, Bell states, entanglement fidelity, gate fidelity, atom loss, quantum computing
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