Szymańska, MH;
Marchetti, FM;
Sanvitto, D;
(2010)
Propagating wave packets and quantized currents in coherently driven polariton superfluids.
Physical Review Letters
, 105
(23)
, Article 236402. 10.1103/PhysRevLett.105.236402.
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Abstract
We study the properties of propagating polariton wave packets and their connection to the stability of doubly charged vortices. Wave-packet propagation and related photoluminescence spectra exhibit a rich behavior dependent on the excitation regime. We show that, because of the nonquadratic polariton dispersion, doubly charged vortices are stable only when initiated in wave packets propagating at small velocities. Vortices propagating at larger velocities, or those imprinted directly into the polariton optical parametric oscillator signal and idler, are unstable to splitting.
| Type: | Article |
|---|---|
| Title: | Propagating wave packets and quantized currents in coherently driven polariton superfluids |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.105.236402 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.105.236402 |
| Language: | English |
| Additional information: | © 2010 The American Physical Society |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1398719 |
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