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Bose-Einstein condensation in inhomogeneous Josephson arrays

R. Burioni·D. Cassi·I. Meccoli·M. Rasetti·S. Regina. P. Sodano·A. Vezzani
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Abstract

We show that spatial Bose-Einstein condensation of non-interacting bosons occurs in dimension d < 2 over discrete structures with inhomogeneous topology and with no need of external confining potentials. Josephson junction arrays provide a physical realization of this mechanism. The topological origin of the phenomenon may open the way to the engineering of quantum devices based on Bose-Einstein condensation. The comb array, which embodies all the relevant features of this effect, is studied in detail.

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R. Burioni, D. Cassi, I. Meccoli, M. Rasetti, S. Regina. P. Sodano, A. Vezzani. 2000-11-14. Bose-Einstein condensation in inhomogeneous Josephson arrays. https://doi.org/10.1209/epl/i2000-00431-5

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