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Title: Coherent quantum phase slip in two-component bosonic atomtronic circuits
Author: Gallemí Paulet, Jaume
Muñoz Mateo, A.
Mayol Sánchez, Ricardo
Guilleumas, Montserrat
Keywords: Física
Issue Date: 18-Jan-2016
Publisher: Institute of Physics Pub.
Abstract: Coherent quantum phase slip consists in the coherent transfer of vortices in superfluids. We investigate this phenomenon in two miscible coherently coupled components of a spinor Bose gas confined in a toroidal trap. After imprinting different vortex states, i.e. states with quantized circulation, on each component, we demonstrate that during the whole dynamics the system remains in a linear superposition of two current states in spite of the nonlinearity, and can be mapped onto a linear Josephson problem. We propose this system as a good candidate for the realization of a Mooij-Harmans qubit and remark its feasibility for implementation in current experiments with 87Rb, since we have used values for the physical parameters currently available in laboratories.
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It is part of: New Journal of Physics, 2016, vol. 18, num. 015003
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ISSN: 1367-2630
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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