Polariton interactions

One of the important (but, by far, not the most important) attributes of polaritons is that, unlike photons, they interact. Still, one can find many claims as a crucial role of polariton-polariton interactions for, e.g., condensation:

Both the BEC effects and the nonlinear effects for applications rely crucially on the magnitude of the polariton-polariton interaction strength.

— Reanalysis of experimental determinations of polariton-polariton interactions in microcavities. D. Snoke, V. Hartwell, J. Beaumariage, S. Mukherjee, Y. Yoon, D. Myers, M. Steger, Z. Sun, K. Nelson and L. Pfeiffer in Phys. Rev. B 107:165302 (2023).

Some papers discussing this important concept:

• Resonant polariton-polariton scattering in semiconductor microcavities. M. Wouters in Phys. Rev. B 76:045319 (2007).
• Polariton-polariton interaction constants in microcavities. M. Vladimirova, S. Cronenberger, D. Scalbert, K. V. Kavokin, A. Miard, A. Lemaître, J. Bloch, D. Solnyshkov, G. Malpuech and A. V. Kavokin in Phys. Rev. B 82:075301 (2010).
• Polariton interactions in semiconductor microcavities. B. Deveaud in C. R. Phys. 17:874 (2016).
• Reanalysis of experimental determinations of polariton-polariton interactions in microcavities. D. Snoke, V. Hartwell, J. Beaumariage, S. Mukherjee, Y. Yoon, D. Myers, M. Steger, Z. Sun, K. Nelson and L. Pfeiffer in Phys. Rev. B 107:165302 (2023).