Results 21 to 30 of about 414 (119)

Communication and the emergence of collective behavior in living organisms: a quantum approach. [PDF]

open access: yesMol Biol Int, 2013
Intermolecular interactions within living organisms have been found to occur not as individual independent events but as a part of a collective array of interconnected events. The problem of the emergence of this collective dynamics and of the correlated biocommunication therefore arises.
Bischof M, Del Giudice E.
europepmc   +2 more sources

Polariton dynamics in one-dimensional arrays of atoms coupled to waveguides

open access: yesNew Journal of Physics, 2022
Photons strongly coupled to material systems constitute a novel system for realizing non-linear optics at the level of individual photons and studying the dynamics of non-equilibrium quantum many-body system.
Björn Schrinski, Anders S Sørensen
doaj   +1 more source

Extreme subradiance from two-band Bloch oscillations in atomic arrays [PDF]

open access: yes, 2023
Atomic arrays provide an important quantum optical platform with photon-mediated dipoledipole interactions, which can be engineered to realize key applications in quantum information processing.
Chen, Xianfeng   +4 more
core   +3 more sources

Optimal subradiant spin wave exchange in dipole-coupled atomic ring arrays

open access: yesNew Journal of Physics, 2023
The subwavelength array of quantum emitters provides an ideal platform for exploring rich many-body dynamics, such as super- and subradiance. In this paper, we explore the dynamics of spin wave exchange between two dipole-coupled atomic ring arrays ...
Yu-xiang Han   +4 more
doaj   +1 more source

Many-Body Quantum Zeno Effect and Measurement-Induced Subradiance Transition [PDF]

open access: yesQuantum, 2021
It is well known that by repeatedly measuring a quantum system it is possible to completely freeze its dynamics into a well defined state, a signature of the quantum Zeno effect.
Alberto Biella, Marco Schiró
doaj   +1 more source

Parity‐time symmetry and coherent perfect absorption in a cooperative atom response

open access: yesNanophotonics, Volume 10, Issue 4, Page 1357-1366, March 2021., 2021
Abstract Parity‐Time (PT) symmetry has become an important concept in the design of synthetic optical materials, with exotic functionalities such as unidirectional transport and nonreciprocal reflection. At exceptional points, this symmetry is spontaneously broken, and solutions transition from those with conserved intensity to exponential growth or ...
Kyle E. Ballantine, Janne Ruostekoski
wiley   +1 more source

Mean-Field Description of Cooperative Scattering by Atomic Clouds

open access: yesAtoms, 2023
We present analytic expressions for the scattering of light by an extended atomic cloud. We obtain the solution for the mean-field excitation of different atomic spherical distributions driven by a uniform laser, including the initial build up, the ...
Nicola Piovella
doaj   +1 more source

Steady-state subradiance manipulated by the two-atom decay

open access: yes, 2022
We investigate theoretically the collective radiance characteristics of an atomic ensemble with the simultaneous decay of two atoms. We show that the two-atom decay can significantly suppress the steady-state collective radiance of the atoms, expanding ...
Lü, Xin-You, Bin, Qian
core   +1 more source

Fluorescence dynamics of an ensemble of cold atoms [PDF]

open access: yesEPJ Web of Conferences, 2019
We have calculated the fluorescence dynamics of cold atoms excited by pulsed radiation. We have considered both Radon-Nikodym spectral method and multi-stage relaxation model describing collective effects in cold atomic gases.
Bozhokin Sergey, Kuraptsev Alexey
doaj   +1 more source

Stability and decay of subradiant patterns in a quantum gas with photon-mediated interactions. [PDF]

open access: yesSci Adv
The phenomenon of subradiance, marked by its surprising suppression of spontaneous emission, challenges conventional expectations of the collective behavior of scatterers.
Baumgärtner A   +7 more
europepmc   +3 more sources

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