Polariton superfluidity

A key work was by Carusotto and Ciuti where they derived the linearization of the spectrum of excitations and showed a collapse of the Rayleigh scattering ring into a point, proof that the fluid does not get excited anymore.

Notable works

• Polariton laser and polariton superfluidity in microcavities. A. Kavokin, G. Malpuech and F. P. Laussy in Phys. Lett. A 306:187 (2003).
• Probing Microcavity Polariton Superfluidity through Resonant Rayleigh Scattering. I. Carusotto and C. Ciuti in Phys. Rev. Lett. 93:166401 (2004).
• Theory of superfluidity in a polariton system. Y. Lozovik and A. Semenov in Theor. Math. Phys. 154:319 (2008).
• Superfluidity and Critical Velocities in Nonequilibrium Bose-Einstein Condensates. M. Wouters and I. Carusotto in Phys. Rev. Lett. 105:020602 (2010).
• Superfluidity of a nonequilibrium Bose-Einstein condensate of polaritons. M. Wouters and V. Savona in Phys. Rev. B 81:054508 (2010).
• Perspectives in superfluidity in resonantly driven polariton fluids. I. Amelio and I. Carusotto in Phys. Rev. B 101:064505 (2020).
• Quantum hydrodynamics of a polariton fluid: Pure energy relaxation terms. D. Saltykova, A. Yulin and I. Shelykh in Phys. Rev. B 112:L060506 (2025).

Groups working on the problem

• I. Carusotto, C. Ciuti and M. Wouters, together or on their own.
• M. Szymanska (see her recent papers & her old website).