Composite boson signature in the interference pattern of atomic dimer condensates

Shiau, Shiue -Yuan; Chenu, Aurélia; Combescot, Monique

doi:10.1088/1367-2630/ab0cc6

Title: Composite boson signature in the interference pattern of atomic dimer condensates

Journal Article · 22 April 2019 · New Journal of Physics

DOI: https://doi.org/10.1088/1367-2630/ab0cc6 · OSTI ID:1525857

^[1];

^[2]; Combescot, Monique ^[3]

National Center for Theoretical Sciences, Hsinchu (Taiwan)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); IKERBASQUE, San Sebastian (Spain)
Sorbonne Univ., Paris (France)

We predict the existence of high frequency modes in the interference pattern of two condensates made of fermionic-atom dimers. These modes, which result from fermion exchanges between condensates, constitute a striking signature of the dimer composite nature. From the 2-coboson spatial correlation function, that we derive analytically, and the Shiva diagrams that visualize many-body effects specific to composite bosons, we identify the physical origin of these high frequency modes and determine the conditions to see them experimentally by using bound fermionic-atom pairs trapped on optical lattice sites. The dimer granularity which appears in these modes comes from Pauli blocking that prevents two dimers to be located at the same lattice site.

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Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 1525857

Report Number(s):: LA-UR--19-22025

Journal Information:: New Journal of Physics, Journal Name: New Journal of Physics Journal Issue: 4 Vol. 21; ISSN 1367-2630

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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