https://doi.org/10.1140/epjd/s10053-022-00503-6
Regular Article - Cold Matter and Quantum Gases
Coherent quantum state transfer in ultra-cold chemistry
1
Department of Physical Sciences, Indian Institute of Science Education and Research Mohali, 140306, Mohali, Punjab, India
2
Department of Physics, Bankura Sammilani College, Kenduadihi, 722101, Bankura, West Bengal, India
3
Department of Physical Sciences, Indian Institute of Science Education and Research Kolkata, 741246, Mohanpur, West Bengal, India
Received:
19
April
2022
Accepted:
14
September
2022
Published online:
28
September
2022
Creation and manipulation of cold molecules from atomic Bose–Einstein condensate has opened up a new dimension to study chemical reactions at ultra-cold temperature, known as ‘superchemistry,’ which is extremely useful for the quantum control of matter wave reaction at ultra-cold temperature. Here, a coherent quantum state transfer of atomic to molecular condensate is demonstrated, mediated by solitonic excitation in the mean-field geometry. It is observed that the induced photoassociation is found to control the velocity of these excitations, which in turn controls the chemical reaction fronts. Cooperative many-body effects of photoassociation on Lieb mode have also been studied through molecular dispersion, revealing degeneracy and bistable behavior. Furthermore, it is observed that the photoassociation-induced molecular energy shows oscillatory behavior, analogous to the classical reaction process.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
