Phases of driven two-level systems with nonlocal dissipation
Physical Review A
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Parmee, C., & Cooper, N. (2018). Phases of driven two-level systems with nonlocal dissipation. Physical Review A, 97 (5)https://doi.org/10.1103/PhysRevA.97.053616
We study an array of two-level systems arranged on a lattice and illuminated by an external plane wave which drives a dipolar transition between the two energy levels. In this set up, the two-level systems are coupled by dipolar interactions and subject to nonlocal dissipation, so behave as an open many-body quantum system. We investigate the long-time dynamics of the system at the mean- eld level, and use this to determine a phase diagram as a function of external drive and detuning. We nd a multitude of phases including antiferromagnetism, spin density waves, oscillations and phase bistabilities. We investigate these phases in more detail and explain how nonlocal dissipation plays a role in the long-time dynamics. Furthermore, we discuss what features would survive in the full quantum description.
EPSRC (via University of Strathclyde) (EP/P009565/1)
External DOI: https://doi.org/10.1103/PhysRevA.97.053616
This record's URL: https://www.repository.cam.ac.uk/handle/1810/279387