Polariton Superfluid Ring

Snoke 2015 image
Image: Gangqiang Liu and David Snoke, University of Pittsburgh

Interference pattern showing the phase coherence of a polariton superfluid circulating in a ring. The polaritons are produced when photons in a specially designed optical medium are altered to have mass and repulsive interactions, so that they act like a gas of atoms. From Liu et al., Proc. Nat. Acad. Sci. (USA), (2015).

Related Abstract

Gray arrow  http://www.pnas.org/content/early/2015/02/11/1424549112