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Bose-Einstein condensation in inhomogeneous Josephson arrays

Raffaella BurioniINFM and Dipartimento di Fisica, Università di Parma - Parma, ItalyDavide CassiINFM and Dipartimento di Fisica, Università di Parma - Parma, ItalyI. MeccoliINFM and Dipartimento di Fisica, Università di Parma - Parma, ItalyMario RasettiINFM and Dipartimento di Fisica, Politecnico di Torino - Torino, ItalyS. ReginaINFM and Dipartimento di Fisica, Università di Parma - Parma, ItalyPasquale SodanoINFM and Dipartimento di Fisica, Università di Perugia - Perugia, ItalyA. VezzaniINFM and Dipartimento di Fisica, Università di Parma - Parma, Italy
2000en
ABI

Аннотация

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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Цитирований: 3Использованных источников: 0