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Towards coherent optical control of a single hole spin: Rabi rotation of a trion conditional on the spin state of the hole
A. J. Ramsay, S. J. Boyle, T. M. Godden +8
A hole spin is a potential solid-state q-bit, that may be more robust against nuclear spin induced dephasing than an electron spin. Here we propose and demonstrate the sequential p…
Persistent currents and quantised vortices in a polariton superfluid
D. Sanvitto, F. M. Marchetti, M. H. Szymanska +10
Semiconductor microcavity polaritons in the optical parametric scattering regime have been recently demonstrated to display a new variety of dissipationless superfluid behaviour. W…
Pumping of nuclear spins by the optical solid effect in a quantum dot
E. A. Chekhovich, M. N. Makhonin, K. V. Kavokin +3
We demonstrate that efficient optical pumping of nuclear spins in semiconductor quantum dots (QDs) can be achieved by resonant pumping of optically "forbidden" transitions. This pr…
Coexisting Non-Equilibrium Condensates with Long-Range Spatial Coherence in Semiconductor Microcavities
D. N. Krizhanovskii, K. G. Lagoudakis, M. Wouters +9
Real and momentum space spectrally resolved images of microcavity polariton emission in the regime of condensation are investigated under non resonant excitation using a laser sour…
Damping of Exciton Rabi Rotations by Acoustic Phonons in Optically Excited InGaAs/GaAs Quantum Dots
A. J. Ramsay, Achanta Venu Gopal, E. M. Gauger +4
We report experimental evidence identifying acoustic phonons as the principal source of the excitation-induced-dephasing (EID) responsible for the intensity damping of quantum dot…
Polarization freezing of 10000 optically-cooled nuclear spins by coupling to a single electron
E. A. Chekhovich, M. N. Makhonin, J. Skiba-Szymanska +5
The nature of the nano-scale environment presents a major challenge for solid-state implementation of spin-based qubits. In this work, a single electron spin in an optically pumped…