Ultrafast quantum gates with fully quantized free-electron quantum optics

• URL: http://arxiv.org/abs/2511.11201v1
• Date: Fri, 14 Nov 2025 11:58:36 GMT
• Title: Ultrafast quantum gates with fully quantized free-electron quantum optics
• Authors: Yongcheng Ding,
• Abstract summary: Free-electron quantum optics provides a versatile platform for manipulating electrons at the quantum level.<n>We propose a grating-based architecture for fully quantized free-electron quantum optics.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• 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.

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