45 citations · 46 across the 8 of their papers we have counts for
8 papers
Matrix Product State Theory of Few-Photon Squeezed Pulses Interacting with a Two-Level Emitter in a Waveguide
Sofia Arranz Regidor, Matthew Kozma, Stephen Hughes
Squeezed light states have a special place in quantum optics with potentially profound applications in emerging quantum technologies. We present a numerically-exact matrix product…
Decoherence in Waveguide Quantum Electrodynamics using Matrix Product States
Matias Bundgaard-Nielsen, Matthew Kozma, Sofia Arranz Regidor +1
We present a matrix product state (MPS) method for including decoherence processes in calculations involving waveguide quantum electrodynamics (waveguide QED) using density matrice…
Quantum dynamics of few-photon pulsed waveguide-QED with a single artificial atom: frequency-dependent scattering theory and time-dependent matrix product states
Sofia Arranz Regidor, Matthew Kozma, Stephen Hughes
We present a quantum dynamical study of pulsed few-photon scattering from a single artificial atom, consisting of a two-level system (TLS) or qubit, in a waveguide QED system, dire…
QwaveMPS: An efficient open-source Python package for simulating non-Markovian waveguide-QED using matrix product states
Sofia Arranz Regidor, Matthew Kozma, Stephen Hughes
QwaveMPS is an open-source Python library for simulating one-dimensional quantum many-body waveguide systems using matrix product states (MPS). It provides a user-friendly interfac…
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…
Theory and simulations of few-photon Fock state pulses strongly interacting with a single qubit in a waveguide: exact population dynamics and time-dependent spectra
Sofia Arranz Regidor, Andreas Knorr, Stephen Hughes
We present a detailed quantum theory and simulations of a few-photon Fock state pulse interacting with a two-level system (TLS) in a waveguide. For a rectangular pulse shape, we pr…
Dynamical spectra from one and two-photon Fock state pulses exciting a single chiral qubit in a waveguide
Sofia Arranz Regidor, Andreas Knorr, Stephen Hughes
We study the dynamical light emission from few-photon Fock states in waveguide-QED with a chiral two-level system. We first investigate the time dynamics of the system by calculati…
Modelling quantum light-matter interactions in waveguide-QED with retardation and a time-delayed feedback: matrix product states versus a space-discretized waveguide model
Sofia Arranz Regidor, Gavin Crowder, Howard Carmichael +1
We present two different methods for modelling non-Markovian quantum light-matter interactions in waveguide QED systems, using matrix product states (MPSs) and a space-discretized…