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Oscillatory Dissipative Tunneling in an Asymmetric Double-well Potential by de Albornoz, Alejandro Cros Carrillo; Cortiñas, Rodrigo G.; Schäfer, Max; Frattini, Nicholas E.; Allen, Brandon; Cabral, Delmar G. A.; Videla, Pablo E.; Khazaei, Pouya; Geva, Eitan; Batista, Victor S.; Devoret, Michel H. is a scholarly article available to read on EtoBox.

What is Oscillatory Dissipative Tunneling in an Asymmetric Double-well Potential about?

Dissipative tunneling remains a cornerstone effect in quantum mechanics. In chemistry, it plays a crucial role in governing the rates of chemical reactions, often modeled as the motion along the reaction coordinate from one potential well to another. The relative positions of energy levels in these wells strongly influence the reaction dynamics. Chemical research will benefit from a fully adjustable, asymmetric double-well equipped with precise measurement capabilities of the tunneling rates. In this paper, we show a quantum simulator system that consists of a continuously driven Kerr parametric oscillator with a third order non-linearity that can be operated in the quantum regime to create a fully tunable asymmetric double-well. Our experiment leverages a low-noise, all-microwave control system with a high-efficiency readout, based on a tunnel Josephson junction circuit, of the which-well information. We explore the reaction rates across the landscape of tunneling resonances in parameter space. We uncover two new and counter-intuitive effects: (i) a weak asymmetry can significantly decrease the activation rates, even though the well in which the system is initialized is made shall

Author

de Albornoz, Alejandro Cros Carrillo; Cortiñas, Rodrigo G.; Schäfer, Max; Frattini, Nicholas E.; Allen, Brandon; Cabral, Delmar G. A.; Videla, Pablo E.; Khazaei, Pouya; Geva, Eitan; Batista, Victor S.; Devoret, Michel H.

Published

2024

Language

EN