Bose-Einstein condensation in inhomogeneous Josephson arrays

被引：54

作者：

Burioni, R ^{[1
]}

Cassi, D

Meccoli, I

Rasetti, M

Regina, S

Sodano, P

Vezzani, A

机构：

[1] INFM, Parma, Italy

[2] Univ Parma, Dipartimento Fis, I-43100 Parma, Italy

[3] INFM, Perugia, Italy

[4] Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy

[5] INFM, Turin, Italy

[6] Politecn Torino, Dipartimento Fis, Turin, Italy

来源：

EUROPHYSICS LETTERS | 2000年 / 52卷 / 03期

关键词：

D O I：

10.1209/epl/i2000-00431-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页码：251 / 256

页数：6

共 21 条

[1] Nonlinear quantum mechanics implies polynomial-time solution for NP-complete and #P problems [J].