Robust coherent control of two-body collisions beyond the ultracold regime

Quantum coherent control of collisions beyond the ultracold regime can face a major challenge due to the incoherent addition of different partial-wave contributions to the total scattering cross section. These contributions become increasingly numerous as the collision energy increases, leading to a...

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Bibliographic Details
Published in:Physical review research 2023-11, Vol.5 (4), p.L042025, Article L042025
Main Authors: Devolder, Adrien, Brumer, Paul, Tscherbul, Timur V.
Format: Article
Language:English
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Summary:Quantum coherent control of collisions beyond the ultracold regime can face a major challenge due to the incoherent addition of different partial-wave contributions to the total scattering cross section. These contributions become increasingly numerous as the collision energy increases, leading to a loss of overall control. Here, we overcome this limitation by leveraging the recently discovered partial-wave phase locking (PWPL) effect, which synchronizes the oscillations of all partial-wave contributions. By using rigorous quantum scattering calculations, we demonstrate that PWPL enables coherent control of spin exchange in ion-atom collisions, far outside the ultracold regime. The predicted extent of control is sufficient to be measurable in cold atom-ion hybrid experiments.
ISSN:2643-1564
2643-1564
DOI:10.1103/PhysRevResearch.5.L042025