42 citations · 317 across the 16 of their papers we have counts for
17 papers
Dissipation in the Broadband and Ultrastrong Coupling Regimes of Cavity Quantum Electrodynamics: An Ab Initio Quantized Quasinormal Mode Approach
Chris Gustin, Juanjuan Ren, Sebastian Franke +1
Phenomenological approaches to photon loss have long been the workhorse of cavity-QED, but prove inadequate in the presence of sufficiently broadband light-matter interactions. We…
What is the spectral density of the reservoir for a lossy quantized cavity?
Chris Gustin, Juanjuan Ren, Stephen Hughes
By considering a two-level system weakly coupled to a single lossy three-dimensional cavity mode, and using a quasinormal mode expansion for the photonic medium, we show that the f…
Reconciling quantum and classical spectral theories of ultrastrong coupling: Role of cavity bath coupling and gauge corrections
Stephen Hughes, Chris Gustin, Franco Nori
Focusing on the widely adopted Hopfield model with cavity dissipation, we show how the linear spectrum of an ultrastrongly coupled cavity and a dipole can be described either class…
Dynamic resonance fluorescence in solid-state cavity quantum electrodynamics
Shunfa Liu, Chris Gustin, Hanqing Liu +7
The coherent interaction between a two-level system and electromagnetic fields serves as a foundation for fundamental quantum physics and modern photonic quantum technology. A prof…
Gauge-invariant theory of truncated quantum light-matter interactions in arbitrary media
Chris Gustin, Sebastian Franke, Stephen Hughes
The loss of gauge invariance in models of light-matter interaction which arises from material and photonic space truncation can pose significant challenges to conventional quantum…
All-optical Tuning of Indistinguishable Single-Photons Generated in Three-level Quantum Systems
Łukasz Dusanowski, Chris Gustin, Stephen Hughes +2
Resonance fluorescence of two-level quantum systems has emerged as a powerful tool in quantum information processing. Extension of this approach to higher-level systems provides ne…
Using the Autler-Townes and ac Stark effects to optically tune the frequency of indistinguishable single-photons from an on-demand source
Chris Gustin, Łukasz Dusanowski, Sven Höfling +1
We describe how a coherent optical drive that is near-resonant with the upper rungs of a three-level ladder system, in conjunction with a short pulse excitation, can be used to pro…
Regimes of Cavity-QED under Incoherent Excitation: From Weak to Deep Strong Coupling
Alberto Mercurio, Vincenzo Macrì, Chris Gustin +3
The prototypical system constituted by a two-level atom interacting with a quantized single-mode electromagnetic field is described by the quantum Rabi model (QRM). The QRM is pote…
Gauge-Independent Emission Spectra and Quantum Correlations in the Ultrastrong Coupling Regime of Open System Cavity-QED
Will Salmon, Chris Gustin, Alessio Settineri +5
A quantum dipole interacting with an optical cavity is one of the key models in cavity quantum electrodynamics (cavity-QED). To treat this system theoretically, the typical approac…
High-resolution spectroscopy of a quantum dot driven bichromatically by two strong coherent fields
Chris Gustin, Lukas Hanschke, Katarina Boos +5
We present spectroscopic experiments and theory of a quantum dot driven bichromatically by two strong coherent lasers. In particular, we explore the regime where the drive strength…
Efficient Pulse-Excitation Techniques for Single Photon Sources from Quantum Dots in Cavities
Chris Gustin, Stephen Hughes
We present rigorous and intuitive master equation models to study on-demand single photon sources from pulse-excited quantum dots coupled to cavities. We consider three methods of…
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-…
Nonlinear Quantum Behavior of Ultrashort-Pulse Optical Parametric Oscillators
Tatsuhiro Onodera, Edwin Ng, Chris Gustin +6
The quantum features of ultrashort-pulse optical parametric oscillators (OPOs) are investigated theoretically in the nonlinear regime near and above threshold. Viewing the pulsed O…
Theory and experiments of coherent photon coupling in semiconductor nanowire waveguides with quantum dot molecules
Chelsea Carlson, Dan Dalacu, Chris Gustin +6
We present a quantum optics theory, numerical calculations, and experiments on coupled quantumdots in semiconductor nanowire waveguides. We first present an analytical Green functi…
Pulsed excitation dynamics in quantum dot-cavity systems: limits to optimizing the fidelity of on-demand single photon sources
Chris Gustin, Stephen Hughes
A quantum dot coupled to an optical cavity has recently proven to be an excellent source of on-demand single photons. Typically, applications require simultaneous high efficiency o…
Spectral asymmetries in the resonance fluorescence of two-level systems under pulsed excitation
Chris Gustin, Ross Manson, Stephen Hughes
We present an open-system master equation study of the coherent and incoherent resonance fluorescence spectrum from a two-level quantum system under coherent pulsed excitation. Sev…
Influence of electron-phonon scattering for an on-demand quantum dot single-photon source using cavity-assisted adiabatic passage
Chris Gustin, Stephen Hughes
We study the role of electron-phonon scattering for a pulse-triggered quantum dot single-photon source which utilizes a modified version of stimulated Raman adiabatic passage and c…