30 citations · 61 across the 8 of their papers we have counts for
8 papers
Floquet-Liouville Theory for Strongly Driven Open Quantum Systems
Kamran Akbari, Stephen Hughes
Periodically driven quantum systems are commonly modeled using master equations constructed in the eigenbasis of an undriven Hamiltonian, implicitly assuming that environmental dis…
Floquet Quasienergy-Resolved Dissipation, Dynamics, and Spectroscopy in Ultrastrong Cavity-QED
Kamran Akbari, Franco Nori, Stephen Hughes
Strong periodic driving of cavity-quantum electrodynamics (QED) in the ultrastrong-coupling regime creates nonequilibrium states whose dissipation is governed by Floquet quasienerg…
Resonance fluorescence of an artificial atom with a time-delayed coherent feedback
Ching-Yeh Chen, Gavin Crowder, Zheng-Qi Niu +7
The model of light-matter interaction in quantum electrodynamics typically relies on the Markovian approximation, which assumes that the system's future evolution depends solely on…
Theory of multi-qubit superradiance in a waveguide in the presence of finite delay times
Sofia Arranz Regidor, Franco Nori, Stephen Hughes
We study the quantum dynamics of multiple two-level atoms (qubits) in a waveguide quantum electrodynamics system, with a focus on modified superradiance effects between two or four…
Floquet engineering the quantum Rabi model in the ultrastrong coupling regime
Kamran Akbari, Franco Nori, Stephen Hughes
We study the quantum Rabi model for a two-level system coupled to a quantized cavity mode under periodic modulation of the cavity-dipole coupling in the ultrastrong coupling regime…
Quantum Phase Transitions in Many-Dipole Light-Matter Systems
Daniele Lamberto, Omar Di Stefano, Stephen Hughes +2
A potential phase transition between a normal ground state and a photon-condensed ground state in many-dipole light-matter systems is a topic of considerable controversy, exasperat…
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…
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…