Effect of vortices on the spin-flip lifetime of atoms in superconducting atom-chips

被引：23

作者：

Nogues, G. ^{[1
]}

Roux, C. ^{[1
]}

Nirrengarten, T. ^{[1
]}

Lupascu, A. ^{[1
]}

Emmert, A. ^{[1
]}

Brune, M. ^{[1
]}

Raimond, J-M. ^{[1
]}

Haroche, S. ^{[1
,2
]}

Placais, B. ^{[3
]}

Greffet, J. -J. ^{[4
]}

机构：

[1] UPMC, CNRS, ENS, Lab Kastler Brossel, F-75005 Paris, France

[2] Coll France, F-75005 Paris, France

[3] UPMC, CNRS, ENS, Lab Pierre Aigrain, F-75231 Paris 05, France

[4] Ecole Cent Paris, Lab EM2C, CNRS, F-92295 Chatenay Malabry, France

来源：

EPL | 2009年 / 87卷 / 01期

关键词：

II SUPERCONDUCTORS; MIXED-STATE; ELECTRODYNAMICS; TRANSITION; TRAPS;

D O I：

10.1209/0295-5075/87/13002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study theoretically the lifetime of magnetically trapped atoms in the close vicinity of a type-II superconducting surface, in the context of superconducting atom-chips. We account for the magnetic noise created at the cloud position by the vortices present in the superconductor and give specific results for our experiment which uses a niobium film. Our main result is that atom losses are dominated by the presence of vortices. They remain however dramatically smaller than in equivalent room-temperature atom-chip setups using normal metals. Copyright (C) EPLA, 2009

引用

页数：6

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