Many-body Chemical Reactions in a Quantum Degenerate Gas
arXiv:2207.08295 · doi:10.1038/s41567-023-02139-8
Abstract
Chemical reactions in the quantum degenerate regime are described by mixing of matterwave fields. Quantum coherence and bosonic enhancement are two unique features of many-body reactions involving bosonic reactants and products. Such collective reactions of chemicals, dubbed "super-chemistry", is an elusive goal in quantum chemistry research. Here we report the observation of coherent and collective reactive coupling between Bose condensed atoms and molecules near a Feshbach resonance. Starting from an atomic condensate, the reaction begins with a rapid formation of molecules, followed by oscillations of their populations in the equilibration process. Faster oscillations are observed in samples with higher densities, indicating bosonic enhancement. We present a quantum field model which describes the dynamics well and identifies three-body recombination as the dominant reaction process. Our findings exemplify the highly sought-after quantum many-body chemistry and offer a new paradigm for the control of quantum chemical reactions.
15 pages, 10 figures. Nat. Phys. (2023)
References in corpus (10)
- Theory of ultracold Fermi gases
- Observation of scale invariance and universality in two-dimensional Bose gases
- Three-boson problem near a narrow Feshbach resonance
- Fast, Runaway Evaporative Cooling to Bose-Einstein Condensation in Optical Traps
- Assembly of a rovibrational ground state molecule in an optical tweezer
- Feshbach resonances, weakly bound molecular states and coupled-channel potentials for cesium at high magnetic fields
- Collective emission of matter-wave jets from driven Bose-Einstein condensates
- Determination of atomic scattering lengths from measurements of molecular binding energies near Feshbach resonances
- Thermal equilibrium and efficient evaporation of an ultracold atom-molecule mixture
- Ultracold Chemistry and its Reaction Kinetics
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- Two-Body Contact Dynamics in a Bose Gas near a Fano-Feshbach Resonance
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- Tunable Molecular Interactions Near an Atomic Feshbach Resonance: Stability and Collapse of a Molecular Bose-Einstein Condensate
- Controllable fusion of electromagnetic bosons in two-dimensional semiconductors
- Quantum Triticality of Bosonic Atomic-Molecular Mixtures with Feshbach Coupling
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- Reformulating Chemical Equilibrium in Reacting Quantum Gas Mixtures: Particle Number Conservation, Correlations and Fluctuations
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