Combined magnetic field system for atom chips

Xuemei Jia; Bowen Xu; Shuyu Zhou; Ying Wang

doi:10.1142/S0217984922501846

Combined magnetic field system for atom chips

Xuemei Jia, Bowen Xu, Shuyu Zhou, Ying Wang

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

Abstract

In this paper, we have developed a combined magnetic field system to explore an alternative technical route for the generation of Bose-Einstein condensates containing numerous atoms on an atom chip. The system is characterized by the fact that the quadrupole magnetic field required by the magneto-optic trap is generated by U-shaped current-carrying wires combined with bias magnetic fields, whereas the quadrupole magnetic field adopted for the magnetic trap is generated by anti-Helmholtz coils. By fine-Tuning the bias magnetic fields, the collection of atoms in the mirror MOT and the loading of the quadrupole magnetic trap can be optimized. The initial number of 87Rb atoms in the magnetic trap is approximately 1×108, and the lifetime of the atoms is over 30 s. This scheme can facilitate the chip-surface design and is suitable for the precise manipulation of Bose-Einstein condensates near the chip surface.

Original language	English
Article number	2250184
Journal	Modern Physics Letters B
Volume	36
Issue number	35
DOIs	https://doi.org/10.1142/S0217984922501846
State	Published - 20 Dec 2022
Externally published	Yes

Keywords

Atom chip
Bose-Einstein condensation
magnetic field system

ASJC Scopus subject areas

Statistical and Nonlinear Physics
Condensed Matter Physics

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10.1142/S0217984922501846

Cite this

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title = "Combined magnetic field system for atom chips",

abstract = "In this paper, we have developed a combined magnetic field system to explore an alternative technical route for the generation of Bose-Einstein condensates containing numerous atoms on an atom chip. The system is characterized by the fact that the quadrupole magnetic field required by the magneto-optic trap is generated by U-shaped current-carrying wires combined with bias magnetic fields, whereas the quadrupole magnetic field adopted for the magnetic trap is generated by anti-Helmholtz coils. By fine-Tuning the bias magnetic fields, the collection of atoms in the mirror MOT and the loading of the quadrupole magnetic trap can be optimized. The initial number of 87Rb atoms in the magnetic trap is approximately 1×108, and the lifetime of the atoms is over 30 s. This scheme can facilitate the chip-surface design and is suitable for the precise manipulation of Bose-Einstein condensates near the chip surface.",

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T1 - Combined magnetic field system for atom chips

AU - Jia, Xuemei

AU - Xu, Bowen

AU - Zhou, Shuyu

AU - Wang, Ying

PY - 2022/12/20

Y1 - 2022/12/20

N2 - In this paper, we have developed a combined magnetic field system to explore an alternative technical route for the generation of Bose-Einstein condensates containing numerous atoms on an atom chip. The system is characterized by the fact that the quadrupole magnetic field required by the magneto-optic trap is generated by U-shaped current-carrying wires combined with bias magnetic fields, whereas the quadrupole magnetic field adopted for the magnetic trap is generated by anti-Helmholtz coils. By fine-Tuning the bias magnetic fields, the collection of atoms in the mirror MOT and the loading of the quadrupole magnetic trap can be optimized. The initial number of 87Rb atoms in the magnetic trap is approximately 1×108, and the lifetime of the atoms is over 30 s. This scheme can facilitate the chip-surface design and is suitable for the precise manipulation of Bose-Einstein condensates near the chip surface.

AB - In this paper, we have developed a combined magnetic field system to explore an alternative technical route for the generation of Bose-Einstein condensates containing numerous atoms on an atom chip. The system is characterized by the fact that the quadrupole magnetic field required by the magneto-optic trap is generated by U-shaped current-carrying wires combined with bias magnetic fields, whereas the quadrupole magnetic field adopted for the magnetic trap is generated by anti-Helmholtz coils. By fine-Tuning the bias magnetic fields, the collection of atoms in the mirror MOT and the loading of the quadrupole magnetic trap can be optimized. The initial number of 87Rb atoms in the magnetic trap is approximately 1×108, and the lifetime of the atoms is over 30 s. This scheme can facilitate the chip-surface design and is suitable for the precise manipulation of Bose-Einstein condensates near the chip surface.

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Combined magnetic field system for atom chips

Abstract

Keywords

ASJC Scopus subject areas

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