Journal
CHINESE PHYSICS LETTERS
Volume 37, Issue 7, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0256-307X/37/7/076701
Keywords
67; 60; -g; 03; 75; Ss
Categories
Funding
- National Natural Science Foundation of China [11974331, 11421092, 11534014]
- National Key Research and Development Program of China [2016YFA0301700, 2017YFA0304100, 2018YFA0307600, 2016YFA0300603]
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We study the formation of quantum droplets in the mixture of a single-component Bose-Einstein condensate (BEC), and a two-species Fermi superfluid across a wide Feshbach resonance. With repulsive boson-boson and attractive boson-fermion interactions, we show that quantum droplets can be stabilized by attractive fermion-fermion interactions on the Bardeen-Cooper-Schrieffer (BCS) side of the resonance, and can also exist in the deep BEC regime under weak boson-fermion interactions. We map out the phase diagram for stable droplets with respect to the boson-boson and boson-fermion interactions, and discuss the role of different types of quantum fluctuations in the relevant regions of the BCS-BEC crossover. Our work reveals the impact of fermion pairing on the formation of quantum droplets in Bose-Fermi mixtures, and provides a useful guide for future experiments.
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