Abstract
We show that, in general, any complex weakly nonlinear highly multimode system can reach thermodynamic equilibrium, characterized by a unique temperature and chemical potential. The conditions leading to either positive or negative temperatures are explicitly obtained in terms of the linear spectrum of the system, the input power, and the corresponding Hamiltonian invariant. Pertinent examples illustrating these results are provided in various scenarios.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
Huizhong Ren, Georgios G. Pyrialakos, Fan O. Wu, Nikolaos K. Efremidis, Mercedeh Khajavikhan, and Demetrios N. Christodoulides
Opt. Lett. 49(7) 1802-1805 (2024)
Konstantinos G. Makris, Fan. O. Wu, Pawel S. Jung, and Demetrios N. Christodoulides
Opt. Lett. 45(7) 1651-1654 (2020)
Mahmoud A. Selim, Fan O. Wu, Georgios G. Pyrialakos, Mercedeh Khajavikhan, and Demetrios Christodoulides
Opt. Lett. 48(5) 1208-1211 (2023)