papers

Publications (18)

cond-mat.mes-hall2019

Quantization of quasinormal modes for open cavities and plasmonic cavity-QED

Sebastian Franke, Stephen Hughes, Mohsen Kamandar Dezfouli +4

We introduce a second quantization scheme based on quasinormal modes, which are the dissipative modes of leaky optical cavities and plasmonic resonators with complex eigenfrequenci…

quant-ph2025

Gain-modified emission dynamics between two quantum emitters in a plasmonic gain cavity system

Becca VanDrunen, Juanjuan Ren, Sebastian Franke +1

We present a general theory of gain-modified emission dynamics between two quantum emitters (two level systems) in a linear gain medium, demonstrating how gain modifies the usual r…

cond-mat.mes-hall2020

Quantized quasinormal mode description of non-linear cavity QED effects from coupled resonators with a Fano-like resonance

Sebastian Franke, Marten Richter, Juanjuan Ren +2

We employ a recently developed quantization scheme for quasinormal modes (QNMs) to study a nonperturbative open cavity-QED system consisting of a hybrid metal-dielectric resonator…

cond-mat.mes-hall2026

Correlation functions for quantum dynamics of coupled quasinormal modes and quantum emitters interacting via finite-delay propagating photons

Robert Meiners Fuchs, Juanjuan Ren, Sebastian Franke +2

The paper develops a time‑dependent framework describing how lossy cavities and quantum emitters interact through delayed photons, using quantized quasinormal modes and non‑bosonic…

#quasinormal modes#cavity quantum electrodynamics#time-delayed interactions#quantum emitters
physics.optics2022

Impact of mode regularization for quasinormal mode perturbation theories

Sebastian Franke, Juanjuan Ren, Stephen Hughes

We give insight into the critical problem of an open resonator that is subject to a perturbation outside of its cavity region. We utilize the framework of quasinormal modes (QNMs),…

quant-ph2019

Theory and limits of on-demand single photon sources using plasmonic resonators: a quantized quasinormal mode approach

Stephen Hughes, Sebastian Franke, Chris Gustin +3

Quantum emitters coupled to plasmonic resonators are known to allow enhanced broadband Purcell factors, and such systems have been recently suggested as possible candidates for on-…