Muñoz, Carlos Sánchez
De Giorgi, Milena
Szymańska, Marzena H.
Pfeiffer, Loren N.
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AbstractWe 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.
CitationBallarini D., Caputo D., Muñoz CS., De Giorgi M., Dominici L., Szymańska MH., West K., Pfeiffer LN., Gigli G., Laussy FP., Sanvitto D. 'Macroscopic two-dimensional polariton condensates', Physical Review Letters. 118 (21) doi: 10.1103/PhysRevLett.118.215301
PublisherAmerican Physical Society
JournalPhysical Review Letters
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