3D modeling of magnetic atom traps on type-II superconductor chips

Vladimir Sokolovsky; Leonid Prigozhin; John W. Barrett

doi:10.1088/0953-2048/27/12/124004

3D modeling of magnetic atom traps on type-II superconductor chips

Vladimir Sokolovsky, Leonid Prigozhin, John W. Barrett

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Magnetic traps for cold atoms have become a powerful tool in cold atom physics and condensed matter research. The traps on superconducting chips allow one to increase the trapped atom lifetime and coherence time by decreasing the thermal noise by several orders of magnitude compared to that of the typical normal-metal conductors. A thin superconducting film in the mixed state is, usually, the main element of such a chip. Using a finite element method to analyze thin film magnetization and transport current in type-II superconductivity, we study magnetic traps recently employed in experiments. The proposed approach allows us to predict important characteristics of the magnetic traps (their depth, shape, distance from the chip surface, etc) that are necessary when designing magnetic traps in cold atom experiments.

Original language	English
Article number	124004
Journal	Superconductor Science and Technology
Volume	27
Issue number	12
DOIs	https://doi.org/10.1088/0953-2048/27/12/124004
State	Published - 1 Dec 2014

Keywords

Cold atoms
Magnetic trap
Numerical modeling
Thin superconducting film

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1088/0953-2048/27/12/124004

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abstract = "Magnetic traps for cold atoms have become a powerful tool in cold atom physics and condensed matter research. The traps on superconducting chips allow one to increase the trapped atom lifetime and coherence time by decreasing the thermal noise by several orders of magnitude compared to that of the typical normal-metal conductors. A thin superconducting film in the mixed state is, usually, the main element of such a chip. Using a finite element method to analyze thin film magnetization and transport current in type-II superconductivity, we study magnetic traps recently employed in experiments. The proposed approach allows us to predict important characteristics of the magnetic traps (their depth, shape, distance from the chip surface, etc) that are necessary when designing magnetic traps in cold atom experiments.",

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AU - Prigozhin, Leonid

AU - Barrett, John W.

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AB - Magnetic traps for cold atoms have become a powerful tool in cold atom physics and condensed matter research. The traps on superconducting chips allow one to increase the trapped atom lifetime and coherence time by decreasing the thermal noise by several orders of magnitude compared to that of the typical normal-metal conductors. A thin superconducting film in the mixed state is, usually, the main element of such a chip. Using a finite element method to analyze thin film magnetization and transport current in type-II superconductivity, we study magnetic traps recently employed in experiments. The proposed approach allows us to predict important characteristics of the magnetic traps (their depth, shape, distance from the chip surface, etc) that are necessary when designing magnetic traps in cold atom experiments.

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KW - Numerical modeling

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3D modeling of magnetic atom traps on type-II superconductor chips

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Keywords

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