Results 31 to 40 of about 2,656 (211)

Superradiance of a global monopole in Reissner–Nordström(–AdS) space-time

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
In this article, the behavior of a charged and massive scalar field around a global monopole swallowed by a Reissner–Nordström–Anti-de Sitter (RN–AdS) black hole is investigated by considering the Klein–Gordon equation in this geometry. The superradiance
M. Haluk Seçuk, Özgür Delice
doaj   +1 more source

SUPERRADIANCE OF NANOLASERS IN INFORMATION-MEASURING PROCEDURES [PDF]

open access: yesРадиофизика и электроника, 2018
Subject and purpose. The subject of the paper is superradiation of nanolasers and its process of quantum dot formation, increased concentration of nonequilibrium charge carriers, as well as physical principles of nanolasers operation with superradiation ...
Yu. P. Machekhin   +3 more
doaj   +1 more source

The many faces of superradiance [PDF]

open access: yes, 2015
Inertial motion superradiance, the emission of radiation by an initially unexcited system moving inertially but superluminally through a medium, has long been known. Rotational superradiance, the amplification of radiation by a rotating rigid object, was
Bekenstein, JD, Schiffer, M
core   +1 more source

Dark photon superradiance quenched by dark matter

open access: yes, 2022
Black-hole superradiance has been used to place very strong bounds on avariety of models of ultralight bosons such as axions, new light scalars, anddark photons.
Pani, P.   +7 more
core   +1 more source

Multidimensional super- and subradiance in waveguide quantum electrodynamics

open access: yesPhysical Review Research, 2020
We study the collective decay rates of multidimensional quantum networks in which one-dimensional waveguides form an intersecting hyperrectangular lattice, with qubits located at the lattice points.
Fatih Dinc   +2 more
doaj   +1 more source

A modern approach to superradiance [PDF]

open access: yesJournal of High Energy Physics, 2017
In this paper, we provide a simple and modern discussion of rotational superradiance based on quantum field theory. We work with an effective theory valid at scales much larger than the size of the spinning object responsible for superradiance.
Endlich, Solomon, Penco, Riccardo
openaire   +4 more sources

Multimode Collective Atomic Recoil Lasing in Free Space

open access: yesAtoms, 2020
Cold atomic clouds in collective atomic recoil lasing are usually confined by an optical cavity, which forces the light-scattering to befall in the mode fixed by the resonator.
Angel T. Gisbert, Nicola Piovella
doaj   +1 more source

Spin superradiance versus atomic superradiance [PDF]

open access: yesLaser Physics Letters, 2005
A comparative analysis is given of spin superradiance and atomic superradiance. Their similarities and distinctions are emphasized. It is shown that, despite a close analogy, these phenomena are fundamentally different. In atomic systems, superradiance is a self-organized process, in which both the initial cause, being spontaneous emission, as well as ...
openaire   +2 more sources

Room-temperature spontaneous superradiance from single diamond nanocrystals

open access: yesNature Communications, 2017
Previously, superradiance was observed from sizeable crystals or close to liquid-helium temperatures. Here, Bradec et al. report the observation of room-temperature superradiance from single, highly luminescent diamond nanocrystals with spatial ...
Carlo Bradac   +7 more
doaj   +1 more source

Dicke phase transition with multiple superradiant states in quantum chaotic resonators [PDF]

open access: yes, 2014
A. F. acknowledges funding from KAUST (Grant No. CRG-1-2012-FRA-005). A. D. F. acknowledges support from the EPSRC (Fellowships No. EP/I004602/1 and No. EP/J004200/1).We experimentally investigate the Dicke phase transition in chaotic optical resonators ...
Liu, Changxu   +6 more
core   +1 more source

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