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Framework of Free-Electron Quantum Optics Using Photonic Integrated Circuits

Guanhao Huang, Nils J. Engelsen, Ofer Kfir, Claus Ropers, Tobias Jan Kippenberg

Published Jan 1, 2023• 0 citations
Publisher

Abstract

We develop a framework of using photonic integrated circuits for free-electron quantum optics applications. We formulate the interaction using a three-dimensional QED quantization procedure, and discuss a few fundamental limitations and specific application scenarios.
DOI
10.1364/cleo_fs.2023.fth3m.3

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Free-electron quantum optics provides a versatile platform for manipulating electrons at the quantum level with potential applications in quantum information technologies. We propose a grating-based architecture for fully quantized free-electron quantum optics, in which photon-electron interactions map onto Jaynes-Cummings and Tavis-Cummings models via Bloch-Floquet analysis. Within this framework, we design ultrafast single- and two-qubit gates with cavity-free flying electrons, enabling universal quantum computing in experimentally accessible setups. More broadly, this framework establishes a platform for probing free-electron quantum optics and advancing quantum technologies in simulation, sensing, and information processing.