Dynamical Casimir effects: The need for nonlocality in time-varying dispersive nanophotonics

作     者：S. Ali Hassani Gangaraj George W. Hanson Francesco Monticone 

作者机构：Optical Physics Division Department of Electrical Engineering School of Electrical and Computer Engineering 

出 版 物：《Physical Review A》 (Phys. Rev. A)

年 卷 期：2024年第110卷第4期

页      面：L041502页

核心收录：

基　　金：Air Force Office of Scientific Research, AFOSR, (FA9550-22-1-0204) Air Force Office of Scientific Research, AFOSR Office of Naval Research, ONR, (N00014-22-1-2486) Office of Naval Research, ONR 

主　　题：Casimir effect & related phenomena Nanophotonics Quantum optics 

摘      要：We study the role of material nonlocality (spatial dispersion) in dynamical Casimir effects in time-varying frequency-dispersive nanophotonic systems. We first show that local models may lead to nonphysical predictions, such as diverging emission rates of entangled polariton pairs. We then theoretically demonstrate that nonlocality regularizes this behavior by correcting the asymptotic response of the system for large wave vectors and leads to physical effects missed by local models, including a significant broadening of the emission rate distribution, which are relevant for future experimental observations. Our work sheds light on the importance of nonlocal effects in this new frontier of nanophotonics.