Quantum fluctuations of the ultracold atom-molecule mixtures
T. Domanski
TL;DR
This paper studies how quantum coherence evolves in ultracold atom-molecule mixtures during magnetic field tuning, revealing the dynamics of atom-molecule fluctuations across the BCS-BEC crossover.
Contribution
It provides a detailed analysis of quantum coherence evolution during magnetic sweeps across the Feshbach resonance in ultracold mixtures.
Findings
Quantum coherence varies with time during magnetic sweeps.
Behavior resembles BCS to BEC crossover.
Quantum fluctuations are induced by Feshbach resonance tuning.
Abstract
We investigate evolution of the quantum coherence in the ultracold mixture of fermionic atoms and bosonic dimer molecules. Interactions are there experimentally controlled via tuning the external magnetic field. Consequently, the fermionic atoms and their bosonic counterparts can be driven to a behavior resembling the usual BCS to BEC crossover. We analyze in some detail how this quantum coherence evolves with respect to time upon a smooth and abrupt sweep across the Feshbach resonance inducing the atom-molecule quantum fluctuations.
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