Control of reactive collisions by quantum interference.
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| Title: | Control of reactive collisions by quantum interference. |
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| Authors: | Son, Hyungmok, Park, Juliana J., Lu, Yu-Kun, Jamison, Alan O., Karman, Tijs, Ketterle, Wolfgang |
| Source: | Science (pre-March 2025). 3/4/2022, Vol. 375 Issue 6584, p1006-1010. 5p. 4 Diagrams. |
| Subjects: | Quantum interference, Reactive flow, Collisions (Physics), Scattering (Physics), Ultracold molecules |
| Abstract: | In this study, we achieved magnetic control of reactive scattering in an ultracold mixture of 23Na atoms and 23Na6Li molecules. In most molecular collisions, particles react or are lost near short range with unity probability, leading to the so-called universal rate. By contrast, the Na + NaLi system was shown to have only ~4% loss probability in a fully spin-polarized state. By controlling the phase of the scattering wave function via a Feshbach resonance, we modified the loss rate by more than a factor of 100, from far below to far above the universal limit. The results are explained in analogy with an optical Fabry-Perot resonator by interference of reflections at short and long range. Our work demonstrates quantum control of chemistry by magnetic fields with the full dynamic range predicted by our models. [ABSTRACT FROM AUTHOR] |
| Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
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