Orientational alignment in cavity quantum electrodynamics

Keeling, Jonathan and Kirton, Peter G. (2018) Orientational alignment in cavity quantum electrodynamics. Physical Review A, 97 (5). 053836. ISSN 2469-9926 (https://doi.org/10.1103/PhysRevA.97.053836)

[thumbnail of Keeling-Kirton-PRA-2018-Orientational-alignment-in-cavity-quantum-electrodynamics]
Text. Filename: Keeling_Kirton_PRA_2018_Orientational_alignment_in_cavity_quantum_electrodynamics.pdf
Final Published Version

Download (378kB)| Preview


We consider the orientational alignment of dipoles due to strong matter-light coupling for a nonvanishing density of excitations. We compare various approaches to this problem in the limit of large numbers of emitters and show that direct Monte Carlo integration, mean-field theory, and large deviation methods match exactly in this limit. All three results show that orientational alignment develops in the presence of a macroscopically occupied polariton mode and that the dipoles asymptotically approach perfect alignment in the limit of high density or low temperature.