Asymmetry Control in a Parametric Oscillator for the Quantum Simulation of Chemical Activation
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866911615485476864 |
|---|---|
| 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. |
| author_facet | 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. |
| contents | 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 shallower, and (ii) the width of the tunneling resonances alternates between narrow and broad lines as a function of the well depth and asymmetry. We predict by numerical simulations that both effects will also manifest themselves in ordinary chemical double-well systems in the quantum regime. Our work is a first step for the development of analog molecule simulators of proton transfer reactions based on quantum parametric processes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_13113 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Asymmetry Control in a Parametric Oscillator for the Quantum Simulation of Chemical Activation 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. Quantum Physics Mesoscale and Nanoscale Physics Chemical Physics 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 shallower, and (ii) the width of the tunneling resonances alternates between narrow and broad lines as a function of the well depth and asymmetry. We predict by numerical simulations that both effects will also manifest themselves in ordinary chemical double-well systems in the quantum regime. Our work is a first step for the development of analog molecule simulators of proton transfer reactions based on quantum parametric processes. |
| title | Asymmetry Control in a Parametric Oscillator for the Quantum Simulation of Chemical Activation |
| topic | Quantum Physics Mesoscale and Nanoscale Physics Chemical Physics |
| url | https://arxiv.org/abs/2409.13113 |