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arXiv · 1611.00697

Nonequilibrium gas-liquid transition in the driven-dissipative photonic lattice

M. Biondi·G. Blatter·H. E. Türeci·S. Schmidt
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Abstract

We study the nonequilibrium steady state of the driven-dissipative Bose-Hubbard model with Kerr nonlinearity. Employing a mean-field decoupling for the intercavity hopping $J$, we find that the steep crossover between low and high photon-density states inherited from the single cavity transforms into a gas$-$liquid bistability at large cavity-coupling $J$. We formulate a van der Waals like gas$-$liquid phenomenology for this nonequilibrium situation and determine the relevant phase diagrams, including a new type of diagram where a lobe-shaped boundary separates smooth crossovers from sharp, hysteretic transitions. Calculating quantum trajectories for a one-dimensional system, we provide insights into the microscopic origin of the bistability.

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M. Biondi, G. Blatter, H. E. Türeci, S. Schmidt. 2017-10-05. Nonequilibrium gas-liquid transition in the driven-dissipative photonic lattice. https://doi.org/10.1103/physreva.96.043809

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