Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Conference on Lasers and Electro-Optics

Interferometric Implementation of Rydberg-Atom Entanglements

Hanlae Jo, Yunheung Song, Minhyuk Kim, Jaewook Ahn

Published May 1, 2019• 0 citations
Publisher

Abstract

We propose and experimentally demonstrate interferometrically controlled Rydberg-atom entanglements, for atoms separated farther than their blockade radius, where the interaction phase induced during the time interval between two control pulses implements distance-selective atom-atom entanglement. © 2019 The Author(s)
DOI
10.23919/cleo.2019.8749860

Related papers

Interferometric implementation of Rydberg-atom entanglements

Hanlae Jo, Yunheung Song, Minhyuk Kim +1 more

We propose and experimentally demonstrate interferometrically controlled Rydberg-atom entanglements, for atoms separated farther than their blockade radius, where the interaction phase induced during the time interval between two control pulses implements distance-selective atom-atom entanglement.

Conference on Lasers and Electro-Optics•Jan 1, 2019•0 citations

Rydberg Atom Entanglements in the Weak Coupling Regime

Hanlae Jo, Yunheung Song, Minhyuk Kim +1 more

We present an entanglement scheme for Rydberg atoms using the van der Waals interaction phase induced by Ramsey-type pulsed interactions. This scheme realizes not only controlled phase operations between atoms at a distance larger than Rydberg blockade distance, but also various counterintuitive entanglement examples, including two-atom entanglement in the presence of a closer third atom and W-state generation for three partially blockaded atoms. Experimental realization is conducted with single rubidium atoms in optical tweezer dipole traps, to demonstrate the proposed entanglement generations with an entanglement fidelity of F=0.59±0.11.

arXiv:1908.01436•Physical Review Letters•Jan 24, 2020•54 citations

High-fidelity non-adiabatic dark state gates for neutral atoms

Nader Mostaan, Kapil Goswami, Peter Schmelcher +1 more

Rydberg blockade gates are the most experimentally mature entangling operations in neutral-atom quantum processors, combining fast gate times with simple control, but their performance degrades at larger interatomic separations and remains sensitive to motional and technical noise. Non-blockade gate schemes, such as dark state and geometric protocols, offer complementary robustness but typically rely on complex and experimentally demanding control. Here we show that quantum optimal control enables non-blockade gate schemes to be implemented using the experimentally established pulse-shaping techniques developed for blockade-based gates. Focusing on the dark state gate, we construct non-adiabatic implementations that preserve the intrinsic robustness of adiabatic dark state protocols while achieving gate times comparable to time-optimal blockade gates using only smooth, experimentally feasible pulses. The resulting gates exhibit enhanced resilience to motional coupling, laser noise, and interaction inhomogeneity, particularly near and beyond the blockade radius. This work establishes a practical route to fast, robust non-blockade-based two-qubit gates without increased experimental complexity.

quant-pharXiv:2602.13885•Feb 17, 2026•0 citations

Rydberg-Mediated Quantum Manipulation of Atom Pairs and Ensembles

Thad G Walker

Interactions between n~100 Rydberg atoms localized within <10 μm prohibit multiple excitations. This “blockade” allows entanglement of spatially resolved atomic pairs and ensembles, including demonstration of a C-NOT gate and collective Rabi flopping.

Frontiers in Optics•Jan 1, 2013•0 citations

Entanglement of Two Atoms Using Rydberg Blockade

Thad G Walker, Mark E. Saffman

arXiv:1202.5328•Advances in atomic, molecular, and optical physics•Jan 1, 2012•18 citations

Towards entanglement of two individual atoms using Rydberg blockade

Alpha Gaétan, Charles Evellin, Y. Miroshnychenko +8 more

•Mar 8, 2008•0 citations
We present an entanglement scheme for Rydberg atoms using the van der Waals interaction phase induced by Ramsey-type pulsed interactions. This scheme realizes not only controlled phase operations between atoms at a distance larger than Rydberg blockade distance, but also various counterintuitive entanglement examples, including two-atom entanglement in the presence of a closer third atom and W-state generation for three partially blockaded atoms. Experimental realization is conducted with single rubidium atoms in optical tweezer dipole traps, to demonstrate the proposed entanglement generations with an entanglement fidelity of F=0.59±0.11.
Rydberg blockade gates are the most experimentally mature entangling operations in neutral-atom quantum processors, combining fast gate times with simple control, but their performance degrades at larger interatomic separations and remains sensitive to motional and technical noise. Non-blockade gate schemes, such as dark state and geometric protocols, offer complementary robustness but typically rely on complex and experimentally demanding control. Here we show that quantum optimal control enables non-blockade gate schemes to be implemented using the experimentally established pulse-shaping techniques developed for blockade-based gates. Focusing on the dark state gate, we construct non-adiabatic implementations that preserve the intrinsic robustness of adiabatic dark state protocols while achieving gate times comparable to time-optimal blockade gates using only smooth, experimentally feasible pulses. The resulting gates exhibit enhanced resilience to motional coupling, laser noise, and interaction inhomogeneity, particularly near and beyond the blockade radius. This work establishes a practical route to fast, robust non-blockade-based two-qubit gates without increased experimental complexity.