A Quantum Multi-Mode Approach to Diffraction and Nonlinear Interaction

报告人
Prof. Jonathan Dowling
单位
Louisiana State University
时间
2018-04-18 (周三) 16:00
地点
上海研究院4号楼331会议室(理化楼2003室同步视频)
摘要

Within the second-quantization framework, we develop a formalism for describing a spatially multimode optical field diffracted through a spatial mask or interacting with an optically nonlinear material and show that this process can be described as an effective interaction between various spatial modes. We first demonstrate a method to calculate the quantum state in the diffracted optical field for any given quantum state in the incident field and compare the result to experiment and suggest several new experiments using Laguerre-Gauss modes. We will also present a second-quantized multimode beam propagation formalism describing the spatial mode structure of the beam generated during a nonlinear interaction and describe several possible experiments to test the ideas using OAM modes.