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).
*We acknowledge support from NSF Grant No. 2016136 for the QLCI center Hybrid Quantum Architectures and Networks and the U.S. Department of Energy Office of Science National Quantum Information Science Research Centers as part of the Q-NEXT center, as well as support from NSF Grant No. 2228725.
–
Presenters
-
Hansub Hwang
- University of Wisconsin - Madison