Continuous-wave all-optical single-photon transistor based on a Rydberg-atom ensemble
arXiv:2309.10804 · doi:10.1103/7q3h-nvm6
Abstract
Continuous-wave (cw) architectures provide a promising route to interface disparate quantum systems by relaxing the need for precise synchronization. While essential cw components, including microwave single-photon transistors and microwave-optical converters, have been explored, an all-optical cw single-photon transistor has remained a missing piece. We propose a high-efficiency, high-gain implementation using Rydberg atoms, in which a control photon disrupts the transmission of a continuous probe beam via the van der Waals interaction. This device completes the set of components required for cw processing of quantum signals and paves the way for all-optical processing at the quantum level.
7 pages, 3 figures. Published version. See also companion paper Phys. Rev. A 113, 013710 (2026) [arXiv:2309.10873]
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