Results 21 to 30 of about 3,283 (102)

Quantum phase transitions of light

open access: yes, 2006
Recently, condensed matter and atomic experiments have reached a length-scale and temperature regime where new quantum collective phenomena emerge. Finding such physics in systems of photons, however, is problematic, as photons typically do not interact ...
A Albus   +46 more
core   +1 more source

Decoherence in a crystal-phase defined double quantum dot charge qubit strongly coupled to a high-impedance resonator

open access: yesPhysical Review Research
Decoherence of a charge qubit is usually credited to charge noise in the environment. Here we show that charge noise may not be the limiting factor for the qubit coherence.
Antti Ranni   +10 more
doaj   +1 more source

A photonic crystal realization of a phase driven two-level atom

open access: yes, 2013
We propose a set of photonic crystals that realize a nonlinear quantum Rabi model equivalent to a two-level system driven by the phase of a quantized electromagnetic field. The crystals are exactly soluble in the weak-coupling regime and their dispersion
Cárdenas, Alejandro Zárate   +3 more
core   +1 more source

Population inversion and entanglement in single and double glassy Jaynes-Cummings models

open access: yes, 2020
We find that a suppression of the collapse and revival of population inversion occurs in response to insertion of Gaussian quenched disorder in atom-cavity interaction strength in the Jaynes-Cummings model.
Das, Sreetama   +3 more
core   +1 more source

Quantum state transmission in a cavity array via two-photon exchange

open access: yes, 2012
The dynamical behavior of a coupled cavity array is investigated when each cavity contains a three-level atom. For the uniform and staggered intercavity hopping, the whole system Hamiltonian can be analytically diagonalized in the subspace of single-atom
A. Zeilinger   +4 more
core   +1 more source

Density operator of a system pumped with polaritons: A Jaynes-Cummings like approach

open access: yes, 2010
We investigate the effects of considering two different incoherent pumpings over a microcavity-quantum dot system modelled using the Jaynes-Cummings Hamiltonian.
Boris A Rodríguez   +7 more
core   +1 more source

Multielectron Ground State Electroluminescence

open access: yes, 2019
The ground state of a cavity-electron system in the ultrastrong coupling regime is characterized by the presence of virtual photons. If an electric current flows through this system, the modulation of the light-matter coupling induced by this non ...
Cirio, Mauro   +4 more
core   +1 more source

Collective effects in the collapse-revival phenomenon and squeezing in the Dicke model

open access: yes, 1998
Resonant interaction of a collection of two-level atoms with a single-mode coherent cavity field is considered in the framework of the Dicke model. We focus on the role of collective atomic effects in the phenomenon of collapses and revivals of the Rabi ...
Brif, C., Mann, A., Ramon, G.
core   +1 more source

Generation of Entangled N-Photon States in a Two-Mode Jaynes-Cummings Model

open access: yes, 2003
We describe a mathematical solution for the generation of entangled N-photon states in two field modes. A simple and compact solution is presented for a two-mode Jaynes-Cummings model by combining the two field modes in a way that only one of the two ...
A. Quattropani   +17 more
core   +1 more source

Quantum Many-Body Phenomena in Coupled Cavity Arrays

open access: yes, 2008
The increasing level of experimental control over atomic and optical systems gained in the past years have paved the way for the exploration of new physical regimes in quantum optics and atomic physics, characterised by the appearance of quantum many ...
Aichhorn   +96 more
core   +1 more source

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