Results 11 to 20 of about 9,112 (235)
ARO-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
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Ultimate quantum limit for amplification: a single atom in front of a mirror
New 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
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On the Renormalization in Quantum Electrodynamics [PDF]
Progress of Theoretical Physics, 1952 The new renonnalization procedure in quantum electrodynamics is presented in this paper. With this procedure, the finite S-matrix can be automatically obtained by· use of the modified commutation relations and propagation functions and, therefore, without introducing the counter tenns of mass- and charge-types.
Kamefuchi, Susumu, Umezawa, Hiroomi
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Quantum Hall phases emerging from atom–photon interactions
npj 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
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Atomic-waveguide quantum electrodynamics
Physical 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
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Quantum electrodynamical metamaterials
Physical Review A, 2023 Recent experiments have revealed ultrastrong coupling between light and matter as a promising avenue for modifying material properties, such as electrical transport, chemical reaction rates, and even superconductivity. Here, we explore (ultra)strong coupling as a means for manipulating the optical response of metamaterials based on ensembles of ...
Josephine J. Yu +3 more
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The Relation between Classical and Quantum Electrodynamics
Theoria, 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
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Visualizing the emission of a single photon with frequency and time resolved spectroscopy [PDF]
Quantum, 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
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Nonperturbative waveguide quantum electrodynamics
Physical 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
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Quasiperiodic circuit quantum electrodynamics
npj 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
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