Dissipative phase transitions in $n$-photon driven quantum nonlinear resonators

• URL: http://arxiv.org/abs/2303.03355v2
• Date: Tue, 31 Oct 2023 17:10:21 GMT
• Title: Dissipative phase transitions in $n$-photon driven quantum nonlinear resonators
• Authors: Fabrizio Minganti, Vincenzo Savona, and Alberto Biella
• Abstract summary: We show that for all odd $n$, no second-order DPT can occur while, for even $n$, the competition between higher-order nonlinearities determines the nature of the criticality. We also show a first-order DPT where multiple solutions emerge around zero, low, and high-photon numbers. Our results highlight the crucial role played by strong and weak symmetries in triggering critical behaviors, providing a Liouvillian framework to study the effects of high-order nonlinear processes in driven-dissipative systems.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We investigate and characterize the emergence of finite-component dissipative phase transitions (DPTs) in nonlinear photon resonators subject to $n$-photon driving and dissipation. Exploiting a semiclassical approach, we derive general results on the occurrence of second-order DPTs in this class of systems. We show that for all odd $n$, no second-order DPT can occur while, for even $n$, the competition between higher-order nonlinearities determines the nature of the criticality and allows for second-order DPTs to emerge only for $n=2$ and $n=4$. As pivotal examples, we study the full quantum dynamics of three- and four-photon driven-dissipative Kerr resonators, confirming the prediction of the semiclassical analysis on the nature of the transitions. The stability of the vacuum and the typical timescales needed to access the different phases are also discussed. We also show a first-order DPT where multiple solutions emerge around zero, low, and high-photon numbers. Our results highlight the crucial role played by strong and weak symmetries in triggering critical behaviors, providing a Liouvillian framework to study the effects of high-order nonlinear processes in driven-dissipative systems, that can be applied to problems in quantum sensing and information processing.

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