Authors
Ballarini, DarioCaputo, Davide
Muñoz, Carlos Sánchez
De Giorgi, Milena
Dominici, Lorenzo
Szymańska, Marzena H.
West, Kenneth
Pfeiffer, Loren N.
Gigli, Giuseppe
Laussy, Fabrice
Sanvitto, Daniele
Issue Date
2017-05-26
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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.Citation
Ballarini 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.118.215301Publisher
American Physical SocietyJournal
Physical Review LettersAdditional Links
http://link.aps.org/doi/10.1103/PhysRevLett.118.215301Type
Journal articleLanguage
enISSN
0031-9007ae974a485f413a2113503eed53cd6c53
10.1103/PhysRevLett.118.215301
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