Hiroya Nakao (Tokyo Institute of Technology, Japan)

Authors: Yuzuru Kato and Hiroya Nakao*

Title: Turing instability in quantum activator–inhibitor systems

Abstract: We show that Turing instability, a fundamental mechanism of nonequilibrium self-organization in classical systems, can also occur in a quantum dissipative system. We propose a quantum-optical parametric oscillator with nonlinear damping as a quantum activator–inhibitor unit, and numerically demonstrate that a system of two such units can undergo Turing instability when diffusively coupled with each other. The Turing instability induces a pair of nonuniform states that are mixed due to quantum noise. Further performing continuous measurement on the coupled system reveals the nonuniformity caused by the Turing instability.

Reference: Y. Kato and H. Nakao, “Turing instability in quantum activator-inhibitor systems”, Sci. Rep. (2022) 12:15573

The seminar will take place in room S07 at the Faculty of Sciences