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Now showing items 11-20 of 20
Breakdown of counterflow superfluidity in a disordered quantum Hall bilayer
(2011)
We present a theory for the regime of coherent interlayer tunneling in a disordered quantum Hall
bilayer at total filling factor one, allowing for the effect of static vortices. We find that the system
consists of domains ...
Population inversion in a single InGaAs quantum dot using the method of adiabatic rapid passage
(2011)
Preparation of a speci c quantum state is a required step for a variety of proposed practical uses of
quantum dynamics. We report an experimental demonstration of optical quantum state preparation
in a semiconductor ...
Microcavity quantum-dot systems for non-equilibrium Bose-Einstein condensation
(2010)
We review the practical conditions required to achieve a non-equilibrium BEC
driven by quantum dynamics in a system comprising a microcavity field mode and a distribution
of localised two-level systems driven to a step-like ...
Population inversion in quantum dot ensembles via adiabatic rapid passage
(2010)
Electrical detection of adiabatic rapid passage (ARP) in quantum dot ensembles is explored by extension of a simple physical model. We include exciton and biexciton states and model the current flow into the external circuit ...
Finite-momentum condensation in a pumped microcavity
(2010)
We calculate the absorption spectra of a semiconductor microcavity into which a nonequilibrium exciton population has been pumped. We predict strong peaks in the spectrum corresponding to collective modes analogous to the ...
The creation and annihilation of optical vortices using cascade conical diffraction
(2011)
Internal conical diffraction produces a superposition of orthogonally polarised zero- and first-order Bessel like beams from an incident circularly polarised Gaussian beam. For right-circularly polarised light, the first-order ...