2D spatial emission of a polariton fluid expanding a fraction of a millimeter. The dark disk is the pumping spot and the V shape feature on the right is a natural defect.
From the article:
Macroscopic Two-Dimensional Polariton CondensatesDario Ballarini, Davide Caputo, Carlos Sánchez Muñoz, Milena De Giorgi, Lorenzo Dominici, Marzena H. Szymańska, Kenneth West, Loren N. Pfeiffer, Giuseppe Gigli, Fabrice P. Laussy, and Daniele Sanvitto
Phys. Rev. Lett. 118, 215301 (2017)
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