Complete quantum coherent control of ultracold molecular collisions
- URL: http://arxiv.org/abs/2012.10269v1
- Date: Fri, 18 Dec 2020 14:37:04 GMT
- Title: Complete quantum coherent control of ultracold molecular collisions
- Authors: Adrien Devolder, Paul Brumer and Timur V. Tscherbul
- Abstract summary: We show that quantum interference-based coherent control is a highly efficient tool for tuning ultracold molecular collision dynamics.
We demonstrate complete coherent control over integral scattering cross sections in the ultracold $s$-wave regime of both the initial and final collision channels.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We show that quantum interference-based coherent control is a highly
efficient tool for tuning ultracold molecular collision dynamics, and is free
from the limitations of commonly used methods that rely on external
electromagnetic fields. By varying {the relative populations and} phases of an
initial coherent superpositions of degenerate molecular states, we demonstrate
complete coherent control over integral scattering cross sections in the
ultracold $s$-wave regime of both the initial and final collision channels. The
proposed control methodology is applied to ultracold O$_2$~+~O$_2$ collisions,
showing extensive control over $s$-wave spin-exchange cross sections and
product branching ratios over many orders of magnitude.
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