Entanglement of Two Individual Neutral Atoms Using Rydberg Blockade
Open accessAbstract
We report the generation of entanglement between two individual 87Rb atoms in hyperfine ground states |F=1,M=1> and |F=2,M=2> which are held in two optical tweezers separated by 4 microm. Our scheme relies on the Rydberg blockade effect which prevents the simultaneous excitation of the two atoms to a Rydberg state. The entangled state is generated in about 200 ns using pulsed two-photon excitation. We quantify the entanglement by applying global Raman rotations on both atoms. We measure that 61% of the initial pairs of atoms are still present at the end of the entangling sequence. These pairs are in the target entangled state with a fidelity of 0.75.
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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 [36]
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- Authors
- Wilk, T., Gaëtan, A., Evellin, C., Wolters, J., Miroshnychenko, Y., Grangier, P., & Browaeys, A.
- Affiliations
- Centre National de la Recherche Scientifique (FR)
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2010-01-08
- Volume
- 104
- Issue
- 1
- Pages
- 010502-010502
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2050330900
- Cited by
- 730
- References
- 3
- Citations by year
- 2026: 23 · 2025: 38 · 2024: 30 · 2023: 45 · 2022: 39 · 2021: 43 · 2020: 49 · 2019: 70 · 2018: 35 · 2017: 50 · 2016: 46 · 2015: 37 · 2014: 51 · 2013: 28 · 2012: 54
- FWCI
- 29.67
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- HAL (submittedVersion, other-oa)
- HAL (submittedVersion)
- arXiv (Cornell University)
- Funders
- Institut Francilien de Recherche sur les Atomes Froids
- Intelligence Advanced Research Projects Activity
- 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
- entanglement generation, Rydberg blockade, neutral atoms, rubidium-87, optical tweezers, two-photon excitation, entanglement fidelity, quantum memory
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