Single-particle model of a strongly driven, dense, nanoscale quantum ensemble

  title={Single-particle model of a strongly driven, dense, nanoscale quantum ensemble},
  author={Christopher DiLoreto and Chitra Rangan},
  journal={Physical Review A},
We study the effects of interatomic interactions on the quantum dynamics of a dense, nanoscale, atomic ensemble driven by a strong electromagnetic field. We use a self-consistent, mean-field technique based on the pseudo-spectral time-domain method, and a full, three-directional basis to solve the coupled Maxwell-Liouville equations. We find that interatomic interactions generate a decoherence in the state of an ensemble on a much faster timescale than the excited state lifetime of individual… 

Figures and Tables from this paper

Decoherent Excitation of Transverse Free Currents in Dielectric Liquids via Inter-Molecular Interactions
We present a theoretical model for a class of optical scattering experiments in which short-duration, linearly-polarized electromagnetic pulses scatter off dielectric liquids. The pattern of


Spontaneous decay of an atom excited in a dense and disordered atomic ensemble: Quantum microscopic approach
On the basis of general theoretical results developed previously in [I. M. Sokolov et al., J. Exp. Theor. Phys. 112, 246 (2011)], we analyze spontaneous decay of a single atom inside cold atomic
Numerical studies of the interaction of an atomic sample with the electromagnetic field in two dimensions
We consider the interaction of electromagnetic radiation of arbitrary polarization with multilevel atoms in a self-consistent manner, taking into account both spatial and temporal dependencies of
Microscopic theory of scattering of weak electromagnetic radiation by a dense ensemble of ultracold atoms
Based on the developed quantum microscopic theory, the interaction of weak electromagnetic radiation with dense ultracold atomic clouds is described in detail. The differential and total cooperative
Modal theory of modified spontaneous emission of a quantum emitter in a hybrid plasmonic photonic-crystal cavity system
We present an analytical modal description of the rich physics involved in hybrid plasmonic-photonic devices that is confirmed by full dipole solutions of Maxwell's equations. Strong
Shifts of a resonance line in a dense atomic sample.
In a homogeneously broadened atomic sample there is no overt Lorentz-Lorenz local field shift of the resonance, nor a collective Lamb shift, but the addition of inhomogeneous broadening restores the usual mean-field phenomenology.
Superradiance in inverted multilevel atomic clouds
This work examines superradiance in initially inverted clouds of multilevel atoms. We develop a set of equations that can approximately calculate the temporal evolution of $N$ coupled atoms. This
Fast quantum gates for neutral atoms
We propose several schemes for implementing a fast two-qubit quantum gate for neutral atoms with the gate operation time much faster than the time scales associated with the external motion of the
Stimulated Raman adiabatic passage as a route to achieving optical control in plasmonics
Optical properties of ensembles of three-level quantum emitters coupled to plasmonic systems are investigated employing a self-consistent model. It is shown that the stimulated Raman adiabatic
Molecular spectra in collective Dicke states
We introduce a model describing the competition of interactions between $N$ two-level systems (TLSs) against decoherence. We apply it to analyze dye molecules in an optical microcavity, where