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arXiv:2511.11201

Ultrafast quantum gates with fully quantized free-electron quantum optics

Yongcheng Ding

quant-phSubmitted Nov 14, 2025• Announced Nov 17, 2025• 0 citations
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Abstract

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.

Comments
21 pages, 5 figures

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