Results 141 to 150 of about 12,791 (220)

Superradiant Superconductivity

, 2012
We suggest possibility of Dicke superradiance in superconductors. The necessary 2-level atoms are identified with Anderson pseudo spins in k-space, seeing a k-dependent self consistent mean field. A way to couple these 2-level bose atoms to a macroscopically excited coherent boson mode and create a novel nonequilibrium superradiant superconductivity ...
openaire   +2 more sources

Cooperative Decay of N Atoms in a Ring Configuration

Atoms
We provide an analytic expression of the spectrum of the cooperative decay rate of N two-level atoms regularly distributed on a ring in the single-excitation configuration.
Nicola Piovella
doaj   +1 more source

Super- and subradiance of clock atoms in multimode optical waveguides

New Journal of Physics, 2019
The transversely confined propagating modes of an optical fiber mediate virtually infinite range energy exchanges among atoms placed within their field, which adds to the inherent free space dipole–dipole coupling.
Laurin Ostermann, Clément Meignant, Claudiu Genes, Helmut Ritsch   +3 more
doaj   +1 more source

Theory and design consideration of a THz superradiant waveguide FEL

Frontiers in Physics
We present theoretical analysis and design considerations of a THz superradiant FEL. We derive analytical expressions for the spectral parameter of THz radiation, emitted superradiantly in a rectangular waveguide using a Longitudinal Section Magnetic ...
Amir Weinberg, Avraham Gover, Ariel Nause, Aharon Friedman, Reuven Ianconescu, Andrew Fisher, Pietro Musumeci, Atsushi Fukasawa, James Rosenzweig   +8 more
doaj   +1 more source

Cavity sub- and superradiance for transversely driven atomic ensembles

Physical Review Research, 2023
Christoph Hotter, L. Ostermann, H. Ritsch   +2 more
semanticscholar   +1 more source

Measuring Zak phase in room-temperature atoms. [PDF]

Light Sci Appl, 2022
Mao R, Xu X, Wang J, Xu C, Qian G, Cai H, Zhu SY, Wang DW.   +7 more
europepmc   +1 more source

Revisiting superradiance dynamics from single diamond nanocrystals with a physically consistent model for fluorescence decay. [PDF]

Nat Commun
Borkowski JJ, Czerwinski A, Kolenderski P.   +2 more
europepmc   +1 more source

Isolated attosecond X-ray pulses from superradiant thomson scattering by a relativistic chirped electron mirror. [PDF]

Sci Rep, 2022
Schaap BH, Smorenburg PW, Luiten OJ.
europepmc   +1 more source

Superradiant terahertz free-electron laser driven by electron microbunch trains. [PDF]

Light Sci Appl
Liang Y, Li T, Sun J, Liu Z, Yang J, Wang X, Yu Y, Tian Q, He Z, Wang H, Zeng L, Yi H, Sun H, Dai Y, Deng X, Wu G, Zhang W, Yang X, Tang C, Yan L.   +19 more
europepmc   +1 more source

Jaynes-Cummings interaction between low-energy free electrons and cavity photons. [PDF]

Sci Adv, 2023
Karnieli A, Fan S.
europepmc   +1 more source