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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
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Symmetry Breaking: A Classic Example of Quantum Interference Captured by Mixed Quantum/Classical Theory
Kayla Imanzi1, Dulat Bostan1, Max McCrea2
1Chemistry Department, Marquette University, Milwaukee, Wisconsin 53201-1881, United States.
The Journal of Physical Chemistry Letters
|November 20, 2023
Summary
This study uses time-dependent mixed quantum classical theory (MQCT) to explore molecular rotational energy transfer. MQCT accurately reproduces propensity and inverse propensity phenomena in molecular scattering.
Area of Science:
- Chemical Physics
- Molecular Dynamics
- Quantum Mechanics
Background:
- Understanding molecular rotational energy transfer is crucial in chemical reactions.
- Propensity and inverse propensity describe preferred final rotational states after collisions.
- Accurate theoretical methods are needed to model these phenomena.
Purpose of the Study:
- To investigate propensity and inverse propensity in molecular collisions.
- To assess the capability of time-dependent mixed quantum classical theory (MQCT) in reproducing these phenomena.
- To provide time-dependent insights into the underlying mechanisms.
Main Methods:
- Utilized time-dependent mixed quantum classical theory (MQCT).
- Treated molecular rotational motion quantum mechanically.
- Described the scattering process classically.
- Applied a closed shell approximation to the NO + Ar system.
Main Results:
- MQCT showed good agreement with full-quantum calculations for the NO + Ar system.
- MQCT successfully reproduced both propensity and inverse propensity.
- These phenomena were reproduced across a broad range of final and initial rotational states.
Conclusions:
- MQCT offers a unique time-dependent perspective on molecular scattering.
- Efficient depopulation of specific states in the early postcollisional stage drives these phenomena.
- A coherent superposition of excited states populated by small angular momentum transitions underlies the observed behavior.
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