Cancellieri, E;
Marchetti, FM;
Szymańska, MH;
Sanvitto, D;
Tejedor, C;
(2012)
Frictionless Flow in a Binary Polariton Superfluid.
Physical Review Letters
, 108
(6)
, Article 065301. 10.1103/PhysRevLett.108.065301.
![[thumbnail of 1398730.pdf]](https://discovery.ucl.ac.uk/style/images/fileicons/application_pdf.png) Preview |
PDF
1398730.pdf Download (795kB) |
Abstract
We study the properties of a binary microcavity polariton superfluid coherently injected by two lasers at different momenta and energies. The crossover from the supersonic to the subsonic regime, where motion is frictionless, is described by evaluating the linear response of the system to a weak defect potential. We show that the coupling between the two components requires that either both components flow without friction or both scatter against the defect, though scattering can be small when the two fluids are weakly coupled. By analyzing the drag force exerted on a defect, we give a recipe to experimentally address the crossover from the supersonic to the subsonic regime.
| Type: | Article |
|---|---|
| Title: | Frictionless Flow in a Binary Polariton Superfluid |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.108.065301 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.108.065301 |
| Language: | English |
| Additional information: | © 2012 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.ucl.ac.uk/id/eprint/1398730 |
Archive Staff Only
 |
View Item |
