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Eberly College of Science Event
CAMP Seminar: Critical phenomena with interacting photons in driven-dissipative micro-cavities
Add to Calendar 2019-12-02T20:30:00 2019-12-02T21:30:00 UTC CAMP Seminar: Critical phenomena with interacting photons in driven-dissipative micro-cavities

Host: Jainendra Jain

Davey Lab (339)
Start DateMon, Dec 02, 2019
3:30 PM
End DateMon, Dec 02, 2019
4:30 PM
Presented By
Said Rahimzadeh-Kalaleh Rodriguez, AMOLF

CAMP Seminar

Networks of nonlinear optical cavities offer unprecedented opportunities for exploring novel phases of light and matter with potential applications to simulation and computation. In this talk, I will discuss the fundamental building-block of such networks: single nonlinear cavities.

First I will present measurements of the dynamic optical hysteresis of a semiconductor micro-cavity with a Kerr nonlinearity. Due to the influence of quantum fluctuations, the hysteresis area follows a double power law decay as a function of the scanning time across the bistability. I will explain how this behavior can be understood within the framework of the Kibble-Zurek mechanism, which describes the onset of non-adiabatic dynamics near a critical point. I will introduce the concept of a dissipative phase transition, and I will explain how to measure its main quantity – the Liouvillian gap – based on the statistics of quantum jumps in the nonlinear cavity.

In the second part of the talk, I will explain how the optical response of a micro-cavity is modified by a non-instantaneous nonlinearity. I will present dynamic optical hysteresis experiments based on tunable micro-cavities filled with thermal nonlinear media. The dynamic hysteresis area displays a non-monotonic behavior as the scanning time across the bistability approaches the thermal relaxation time. For large speeds, the non-instantaneous nonlinearity leads to a power law decay of the hysteresis area with a universal exponent.

I will conclude with perspectives for realizing lattices of bistable optical cavities, and for exploring non-Markovian nonlinear dynamics, in a tunable system at room-temperature.