Dissipation-Induced Instabilities of a Spinor Bose-Einstein Condensate Inside an Optical Cavity.
Chiacchio, EI Rodríguez
Physical review letters
MetadataShow full item record
Chiacchio, E. R., & Nunnenkamp, A. (2019). Dissipation-Induced Instabilities of a Spinor Bose-Einstein Condensate Inside an Optical Cavity.. Physical review letters, 122 (19), 193605. https://doi.org/10.1103/physrevlett.122.193605
We investigate the dynamics of a spinor Bose-Einstein condensate inside an optical cavity, driven transversely by a laser with a controllable polarization angle. We focus on a two-component Dicke model with complex light-matter couplings, in the presence of photon losses. We calculate the steady-state phase diagram and find dynamical instabilities in the form of limit cycles, heralded by the presence of exceptional points and level attraction. We show that the instabilities are induced by dissipative processes that generate nonreciprocal couplings between the two collective spins. Our predictions can be readily tested in state-of-the-art experiments and open up the study of nonreciprocal many-body dynamics out of equilibrium.
Royal Society (uf130303)
External DOI: https://doi.org/10.1103/physrevlett.122.193605
This record's URL: https://www.repository.cam.ac.uk/handle/1810/292348
All rights reserved