F. M. Marchetti, J. Keeling
We consider the collective behavior of microcavity polaritons tuned near a bipolariton Feshbach resonance. We show that as well as the regular polariton superfluid phase a "molecular" superfluid phase exists, with (quasi-)long-range order only for pairs of polaritons. We describe the experimental signatures of this phase. Using variational approaches we find the phase diagram (critical temperature, density and exciton-photon detuning). Unlike ultracold atoms, the molecular superfluid phase is not inherently unstable, and our phase diagram suggests it is attainable in current experiments.
View original:
http://arxiv.org/abs/1308.1032
No comments:
Post a Comment