Demonstration of Single Cesium Atom-Photon Entanglement for Dual Species Quantum Networking
Oral
Abstract
Quantum networks for modular quantum computing benefit from atom-photon interfaces with photons that can be transmitted with low loss in telecom fiber.
Motivated by dual-species neutral-atom architectures that suppress optical crosstalk by separating communication and processor species while enabling interspecies Rydberg coupling [1], we are demonstrating a single-atom Cs atom-photon entanglement for Rb–Cs dual species networking. Single-atom atom–photon entanglement has been demonstrated with 87Rb, but not yet with single Cs atoms. We generate polarization-encoded photons correlated with a Cs Zeeman qubit states and measure Z- and X-basis parity fringes, from which we extract an atom–photon entanglement fidelity. These results establish key milestones toward future dual-species telecom-network integration.
[1] C. B. Young et al., “An architecture for quantum networking of neutral atom processors,” Appl. Phys. B 128, 151 (2022).
Motivated by dual-species neutral-atom architectures that suppress optical crosstalk by separating communication and processor species while enabling interspecies Rydberg coupling [1], we are demonstrating a single-atom Cs atom-photon entanglement for Rb–Cs dual species networking. Single-atom atom–photon entanglement has been demonstrated with 87Rb, but not yet with single Cs atoms. We generate polarization-encoded photons correlated with a Cs Zeeman qubit states and measure Z- and X-basis parity fringes, from which we extract an atom–photon entanglement fidelity. These results establish key milestones toward future dual-species telecom-network integration.
[1] C. B. Young et al., “An architecture for quantum networking of neutral atom processors,” Appl. Phys. B 128, 151 (2022).
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Presenters
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Hansub Hwang
- University of Wisconsin - Madison