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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
Published on: April 4, 2017
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Description of quantum interference using mixed quantum/classical theory of inelastic scattering
Dulat Bostan1, Bikramaditya Mandal1, Carolin Joy1
1Chemistry Department, Marquette University, Milwaukee, Wisconsin 53201-1881, USA. dmitri.babikov@mu.edu.
Physical Chemistry Chemical Physics : PCCP
|May 31, 2023
Summary
Quantum interference causes oscillations in scattering cross sections for nitrogen (N₂) + oxygen (O) collisions. Different theoretical methods show good agreement, with oscillations persisting across a wide energy range.
Area of Science:
- Chemical Physics
- Quantum Mechanics
- Scattering Theory
Background:
- Quantum interference effects are crucial in molecular collisions.
- Understanding these effects requires accurate theoretical models and computational methods.
Purpose of the Study:
- To investigate quantum interference in N₂ + O collisions.
- To compare different theoretical methods for calculating scattering cross sections.
- To analyze the influence of initial rotational states and potential energy surfaces (PESs).
Main Methods:
- Utilized two electronic potential energy surfaces (PESs) for the N₂ + O system.
- Employed approximate mixed quantum/classical theory (MQCT and AT-MQCT) and the full-quantum coupled-channel method (MOLSCAT).
- Calculated elastic scattering cross sections across a broad range of collision energies.
Main Results:
- Observed oscillations in elastic scattering cross sections due to quantum interference.
- Demonstrated good agreement between MQCT and MOLSCAT, especially at high collision energies.
- Found that quantum oscillations persist across a wide energy range, including low energies.
Conclusions:
- Quantum interference significantly impacts scattering cross sections in N₂ + O collisions.
- MQCT provides a reliable approximation to full-quantum calculations for this system.
- The study reproduces available experimental data at high collision energies.
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