Work

Macroscopic Two-Dimensional Polariton Condensates

Year: 2017

Type: article

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/μm^{2}, 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.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.118.215301

Authors: Dario Ballarini, Davide Caputo, Carlos Sánchez Muñoz, Milena De Giorgi, Lorenzo Dominici, Marzena H. Szymańska, Kenneth West, Loren N. Pfeiffer, Giuseppe Gigli, Fabrice P. Laussy, Daniele Sanvitto

Institutions: Istituto di Nanotecnologia, University of Salento, RIKEN, RIKEN Center for Emergent Matter Science, University College London, Princeton University, University of Wolverhampton, Russian Quantum Center, Istituto Nazionale di Fisica Nucleare, Sezione di Lecce

Language: English

Topic: Strong Light-Matter Interactions

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: Engineering and Physical Sciences Research Council, H2020 European Research Council

Awards: G1182189486, G1464326824, G150127308, G3425352224, Coherent quantum matter out of equilibrium - from fundamental physics towards applications, Coherent quantum matter out of equilibrium - from fundamental physics towards applications, Novel superfluid phenomena in semiconductor microcavities

OpenAlex ID: W3155543267

FWCI: 4.152

Cites: 45

Cited by: 57

Related to: 10