Spatial correlations in driven-dissipative photonic lattices
Journal Article
·
· New Journal of Physics
- ETH Zurich, Zurich (Switzerland); Institute for Theoretical Physics, Zurich, Switzerland
- ETH Zurich, Zurich (Switzerland)
- Princeton Univ., Princeton, NJ (United States)
In this paper, we study the nonequilibrium steady-state of interacting photons in cavity arrays as described by the driven-dissipative Bose–Hubbard and spin-1/2 XY model. For this purpose, we develop a self-consistent expansion in the inverse coordination number of the array ($$\sim 1/z$$) to solve the Lindblad master equation of these systems beyond the mean-field approximation. Our formalism is compared and benchmarked with exact numerical methods for small systems based on an exact diagonalization of the Liouvillian and a recently developed corner-space renormalization technique. We then apply this method to obtain insights beyond mean-field in two particular settings: (i) we show that the gas–liquid transition in the driven-dissipative Bose–Hubbard model is characterized by large density fluctuations and bunched photon statistics. (ii) We study the antibunching–bunching transition of the nearest-neighbor correlator in the driven-dissipative spin-1/2 XY model and provide a simple explanation of this phenomenon.
- Research Organization:
- Princeton Univ., Princeton, NJ (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- Grant/Contract Number:
- SC0016011
- OSTI ID:
- 1500093
- Alternate ID(s):
- OSTI ID: 22990760
- Journal Information:
- New Journal of Physics, Journal Name: New Journal of Physics Journal Issue: 12 Vol. 19; ISSN 1367-2630
- Publisher:
- IOP PublishingCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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