Spin currents and superfluidity of microcavity polaritons
Lead Research Organisation:
University of Southampton
Department Name: Sch of Physics and Astronomy
Abstract
The overall goal of the project is to detect experimentally exciton-polariton superfluids and spin currents in microcavities and to develop a full quantum theory of exciton-polariton superfluidity. The fingerprints of polariton superfluidity will be searched for in spatially- and directionally-resolved optical measure-ments with spectral, temporal and polarization-detection, with or without application of external magnetic fields, on improved quality strain free microcavity samples. We shall look for conventional and superfluid polariton spin currents in the regime of the optical spin Hall effect. We expect theoretically important dif-ferences between polariton and conventional superfluids caused by a peculiar dispersion and spin structure of exciton-polaritons. We aim to study theoretically and experimentally the polarization dynamics of both resonantly and non-resonantly excited polariton condensates to reveal the specifics of polariton superfluid-ity and search for new effects including the optical spin-Hall effect and the spin analogue of the Meissner effect.
Organisations
Publications
Amo A
(2010)
Exciton-polariton spin switches
in Nature Photonics
Askitopoulos A
(2013)
Polariton condensation in an optically induced two-dimensional potential
in Physical Review B
Askitopoulos A
(2015)
Robust platform for engineering pure-quantum-state transitions in polariton condensates
in Physical Review B
Baumberg J
(2008)
Room temperature polariton lasing and BEC in semiconductor microcavities
Christogiannis N
(2013)
Characterizing the Electroluminescence Emission from a Strongly Coupled Organic Semiconductor Microcavity LED
in Advanced Optical Materials
Cilibrizzi P
(2014)
Polariton condensation in a strain-compensated planar microcavity with InGaAs quantum wells
in Applied Physics Letters
Cilibrizzi P
(2014)
Linear wave dynamics explains observations attributed to dark solitons in a polariton quantum fluid.
in Physical review letters
Coles D
(2013)
Imaging the polariton relaxation bottleneck in strongly coupled organic semiconductor microcavities
in Physical Review B
Coles DM
(2014)
Polariton-mediated energy transfer between organic dyes in a strongly coupled optical microcavity.
in Nature materials
Eldridge P
(2010)
Nonlinear birefringence and time-resolved Kerr measurement of spin lifetimes in (110) GaAs / Al y Ga 1 - y As quantum wells
in Physical Review B
Eldridge P
(2009)
Rashba Conduction Band Spin-Splitting for Asymmetric Quantum Well Potentials
in Journal of Superconductivity and Novel Magnetism
Eldridge P
(2008)
All-optical measurement of Rashba coefficient in quantum wells
in Physical Review B
Eldridge P
(2010)
Rashba spin-splitting of electrons in asymmetric quantum wells
in Physical Review B
English D
(2011)
Strain-induced spin relaxation anisotropy in symmetric (001)-oriented GaAs quantum wells
in Physical Review B
Grundy A
(2009)
Observing odd numbers of polaritons in pillar microcavities
Kammann E
(2012)
Crossover from photon to exciton-polariton lasing
in New Journal of Physics
Kammann E
(2012)
Nonlinear optical spin Hall effect and long-range spin transport in polariton lasers.
in Physical review letters
Kavokin AV
(2015)
Exciton-photon correlations in bosonic condensates of exciton-polaritons.
in Scientific reports
Kochereshko VP
(2016)
Lasing in Bose-Fermi mixtures.
in Scientific reports
Kotsifaki D
(2015)
Near-field enhanced optical tweezers utilizing femtosecond-laser nanostructured substrates
in Applied Physics Letters
Lagoudakis KG
(2011)
Probing the dynamics of spontaneous quantum vortices in polariton superfluids.
in Physical review letters
Lagoudakis P
(2014)
Polariton condensates: Going soft.
in Nature materials
Liao Y
(2014)
Highly Efficient Flexible Hybrid Nanocrystal-Cu(In,Ga)Se 2 (CIGS) Solar Cells
in Advanced Energy Materials
Maragkou M
(2010)
Longitudinal optical phonon assisted polariton laser
in Applied Physics Letters
Maragkou M
(2010)
Spontaneous nonground state polariton condensation in pillar microcavities
in Physical Review B
Maragkou M
(2011)
Optical analogue of the spin Hall effect in a photonic cavity.
in Optics letters
Maragkou M
(2009)
Mode selection in GaAs micropillar polariton lasers
Maragkou Maria
(2011)
Optical analogue of the spin Hall effect in a photonic cavity
in OPTICS LETTERS
Ohadi H
(2012)
Spontaneous symmetry breaking in a polariton and photon laser.
in Physical review letters
Ohadi H
(2016)
Nontrivial Phase Coupling in Polariton Multiplets
in Physical Review X
Poltavtsev S
(2014)
Optics of spin-noise-induced gyrotropy of an asymmetric microcavity
in Physical Review B
Poltavtsev S
(2014)
Spin noise spectroscopy of a single quantum well microcavity
in Physical Review B
Ryzhov I
(2015)
Spin noise amplification and giant noise in optical microcavity
in Journal of Applied Physics
Tsotsis P
(2014)
Tuning the Energy of a Polariton Condensate via Bias-Controlled Rabi Splitting
in Physical Review Applied
| Description | Our research has underpinned some of the recent advances in the first observations of organic polariton condensation and polariton-mediated energy transfer achieved between different organic materials. |
| Exploitation Route | We believe that our research will make polaritonics the basis for future optoelectronic technologies, including thresholdless lasers, THz emitters (with applications in non-invasive medical imaging and explosives detection), and a range of new quantum information technologies. Indeed, by modifying the basic electronic functionality of materials, hybrid polaritonics could have even wider impact in the areas from chemical sensing to catalysis and photo-biology. |
| Sectors | Electronics,Energy |
| URL | http://www.hybrid.soton.ac.uk/ |
| Description | The research output has been published in high impact journals, presented as invited talks at international conference. |
| First Year Of Impact | 2012 |
| Sector | Education |
| Impact Types | Societal |