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arXiv · 0704.0650

Coherent macroscopic quantum tunneling in boson-fermion mixtures

D. Mozyrsky·I. Martin·E. Timmermans
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Abstract

We show that the cold atom systems of simultaneously trapped Bose-Einstein condensates (BEC's) and quantum degenerate fermionic atoms provide promising laboratories for the study of macroscopic quantum tunneling. Our theoretical studies reveal that the spatial extent of a small trapped BEC immersed in a Fermi sea can tunnel and coherently oscillate between the values of the separated and mixed configurations (the phases of the phase separation transition of BEC-fermion systems). We evaluate the period, amplitude and dissipation rate for $^{23}$Na and $^{40}$K-atoms and we discuss the experimental prospects for observing this phenomenon.

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D. Mozyrsky, I. Martin, E. Timmermans. 2007-04-04. Coherent macroscopic quantum tunneling in boson-fermion mixtures. https://doi.org/10.1103/physreva.76.051601

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