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西安交通大学王信副教授：Generating spatially separated correlated multiphoton states in nonlinear wQED
- 来源：
- 学校官网
- 收录时间：
- 2026-07-02 03:10:04
- 时间：
- 2026-07-03 10:00:00
- 地点：
- 物理与光电学院18楼220会议室
- 报告人：
- 王信 副教授
- 学校：
- 华南理工大学
- 关键词：
- quantum optics, quantum information, multiphoton states, nonlinear waveguide, quantum state engineering
- 简介：
- The generation of strongly correlated multi-photon states is fundamental for quantum technologies. In this talk we will discuss a new approach for generating correlated few-photon states via cascaded inelastic scattering in a nonlinear waveguide. Unlike standard point-like scattering, this process relies on an effective nonlocal potential arising from the spatial extent of the bound-state wavefunction, which we formalize using the concept of a “pseudo-giant atom”. Implementing this scheme with a real giant atom enables unidirectional, tunable photon conversion without backscattering. The final output is a programmable, time-bin encoded, atom-waveguide hyper-entangled state, where photon-number components are automatically sorted by their distinct group velocities. This work opens a new paradigm in quantum state engineering, enabling on-demand generation of complex multi-photon resources for quantum simulation, metrology, and scalable quantum networks.
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报告介绍：
The generation of strongly correlated multi-photon states is fundamental for quantum technologies. In this talk we will discuss a new approach for generating correlated few-photon states via cascaded inelastic scattering in a nonlinear waveguide. Unlike standard point-like scattering, this process relies on an effective nonlocal potential arising from the spatial extent of the bound-state wavefunction, which we formalize using the concept of a “pseudo-giant atom”. Implementing this scheme with a real giant atom enables unidirectional, tunable photon conversion without backscattering. The final output is a programmable, time-bin encoded, atom-waveguide hyper-entangled state, where photon-number components are automatically sorted by their distinct group velocities. This work opens a new paradigm in quantum state engineering, enabling on-demand generation of complex multi-photon resources for quantum simulation, metrology, and scalable quantum networks.
报告人介绍：
王信，西安交通大学物理学院副教授。2012年毕业于西安交通大学电气工程及其自动化专业，获得学士学位；2017年毕业于西安交通大学物理系，获得理学博士学位。2019年至2020年在日本理化学研究所从事博士后研究工作。主要研究方向为量子光学和量子信息，主持国家自然科学基金项目、省部级基金多项，2024年获得英国物理学会出版社“高被引论文奖”。目前已在Physical Review Letters、Communication Physics、Physical Review等期刊发表论文40余篇。
报告图片：
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