Results 21 to 30 of about 95,918 (256)

Mesoscopic electrodynamics at metal surfaces

open access: yesNanophotonics, 2021
Plasmonic phenomena in metals are commonly explored within the framework of classical electrodynamics and semiclassical models for the interactions of light with free-electron matter. The more detailed understanding of mesoscopic electrodynamics at metal
Mortensen N. Asger
doaj   +1 more source

Spontaneous Emission Enhancement of CdSe Quantum Dots Embedded in a Two-dimensional Photonic Crystal L3 Nanocavity

open access: yesARO-The Scientific Journal of Koya University, 2021
Two-dimensional photonic crystal nanocavities were designed to tailor cavity quantum electrodynamics. Enhancing the spontaneous emission of low-quality factor nanocavity with embedded CdSe quantum dots (QDs) emitters is the aim of this study.
Khalid N. Sediq
doaj   +1 more source

Ultimate quantum limit for amplification: a single atom in front of a mirror

open access: yesNew Journal of Physics, 2021
We investigate three types of amplification processes for light fields coupling to an atom near the end of a one-dimensional (1D) semi-infinite waveguide. We consider two setups where a drive creates population inversion in the bare or dressed basis of a
Emely Wiegand   +4 more
doaj   +1 more source

Nonequilibrium quantum electrodynamics [PDF]

open access: yesPhysical Review D, 1998
We employ the influence functional technique to trace out the photonic contribution from full quantum electrodynamics. The reduced density matrix propagator for the spinor field is then constructed. We discuss the role of time-dependent renormalization in the propagator and focus on the possibility of obtaining dynamically induced superselection rules.
Anastopoulos, C., Zoupas, A.
openaire   +2 more sources

The Relation between Classical and Quantum Electrodynamics

open access: yesTheoria, 2011
Quantum electrodynamics presents intrinsic limitations in the description of physical processes that make it impossible to recover from it the type of description we have in classical electrodynamics.
Mario Bacelar Valente
doaj   +1 more source

Quantum Hall phases emerging from atom–photon interactions

open access: yesnpj Quantum Information, 2021
We reveal the emergence of quantum Hall phases, topological edge states, spectral Landau levels, and Hofstadter butterfly spectra in the two-particle Hilbert space of an array of periodically spaced two-level atoms coupled to a waveguide (waveguide ...
Alexander V. Poshakinskiy   +6 more
doaj   +1 more source

Atomic-waveguide quantum electrodynamics

open access: yesPhysical Review Research, 2020
Atom arrays are a new type of quantum light-matter interface. Here we propose to employ one-dimensional ordered arrays as atomic waveguides. These arrays support optical guided modes that do not decay into free space.
Stuart J. Masson, Ana Asenjo-Garcia
doaj   +1 more source

Nonperturbative waveguide quantum electrodynamics

open access: yesPhysical Review Research, 2022
Understanding physical properties of quantum emitters strongly interacting with quantized electromagnetic modes is one of the primary goals in the emergent field of waveguide quantum electrodynamics (QED).
Yuto Ashida   +3 more
doaj   +1 more source

Quasiperiodic circuit quantum electrodynamics

open access: yesnpj Quantum Information, 2023
Superconducting circuits are an extremely versatile platform to realize quantum information hardware and to emulate topological materials. We here show how a simple arrangement of capacitors and conventional superconductor-insulator-superconductor ...
T. Herrig   +3 more
doaj   +1 more source

Visualizing the emission of a single photon with frequency and time resolved spectroscopy [PDF]

open access: yesQuantum, 2021
At the dawn of Quantum Physics, Wigner and Weisskopf obtained a full analytical description (a $\textit{photon portrait}$) of the emission of a single photon by a two-level system, using the basis of frequency modes (Weisskopf and Wigner, "Zeitschrift ...
Aleksei Sharafiev   +6 more
doaj   +1 more source

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