Ballarini, D;
Caputo, D;
Muñoz, CS;
De Giorgi, M;
Dominici, L;
Szymańska, MH;
West, K;
... Sanvitto, D; + view all
(2017)
Macroscopic Two-Dimensional Polariton Condensates.
Physical Review Letters
, 118
, Article 215301. 10.1103/PhysRevLett.118.215301.
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Abstract
We report a record-size, two-dimensional polariton condensate of a fraction of a millimeter radius free from the presence of an exciton reservoir. This macroscopically occupied state is formed by the ballistically expanding polariton flow that relaxes and condenses over a large area outside of the excitation spot. The density of this trap-free condensate is <1 polariton/μm2, reducing the phase noise induced by the interaction energy. Moreover, the backflow effect, recently predicted for the nonparabolic polariton dispersion, is observed here for the first time in the fast-expanding wave packet.
| Type: | Article |
|---|---|
| Title: | Macroscopic Two-Dimensional Polariton Condensates |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.118.215301 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.118.215301 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| 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/1516910 |
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