Monday, March 5, 2018
4:00 pm
Annenberg 107

Applied Physics Seminar

Critical Behavior of Driven Dissipative Transitions : Universality Beyond the Markovian Regime
Mukund Vengalattore, Professor, Physics, Cornell

Abstract: Abstract: Open quantum systems exhibit a range of novel behavior due to the interplay between coherent dynamics and dissipation. Although these systems are intrinsically out of equilibrium, they can exhibit driven dissipative transitions that result in the emergence of dynamical phases in novel universality classes and critical behavior that lies beyond the traditional paradigms of Landau-Ginzburg phenomenology. I will discuss an experimental realization of such driven dissipative phase transitions and our studies of the critical behavior as quantified by the Kibble-Zurek mechanism. Using continuous measurement and feedback, we also study the critical behavior of these transitions under the influence of dynamically imprinted non-Markovian system-reservoir interactions. We find that the critical dynamics of these transitions can be profoundly altered by subjecting the system to different forms of environmental correlations, leading not only to modified critical exponents but to the emergence of dynamical phases with novel broken symmetries. Extending these studies to the quantum regime, our demonstrations of non-Markovian reservoir engineering promise to access new forms of correlated quantum behavior that do not occur in equilibrium or Markovian systems.

Contact Cecilia Gamboa cgamboa@caltech.edu at 626-395-4400
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