Cold atoms probe the magnetic field near a wire

M. P.A. Jones; C. J. Vale; D. Sahagun; B. V. Hall; C. C. Eberlein; B. E. Sauer; K. Furusawa; D. Richardson; E. A. Hinds

doi:10.1088/0953-4075/37/2/L01

Cold atoms probe the magnetic field near a wire

M. P.A. Jones, C. J. Vale, D. Sahagun, B. V. Hall, C. C. Eberlein, B. E. Sauer, K. Furusawa, D. Richardson, E. A. Hinds

Institute of Multidisciplinary Research for Advanced Materials (IMRAM)

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

33 Citations (Scopus)

Abstract

A microscopic Ioffe-Pritchard trap is formed using a straight, current-carrying wire, together with suitable auxiliary magnetic fields. By measuring the distribution of cold rubidium atoms held in this trap, we detect a weak magnetic field component ΔB_z parallel to the wire. This is produced by the current in the wire and is approximately periodic along the wire with period λ = 230 μm. We have measured this field at distances in the range y = 250-350 μm from the centre of the wire. Over this range we find that the decrease of the field is well described by the Bessel function K₁(2πy/λ), as one would expect for the far field of a transversely oscillating current within the wire.

Original language	English
Pages (from-to)	L15-L20
Journal	Journal of Physics B: Atomic, Molecular and Optical Physics
Volume	37
Issue number	2
DOIs	https://doi.org/10.1088/0953-4075/37/2/L01
Publication status	Published - 2004 Jan 28

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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abstract = "A microscopic Ioffe-Pritchard trap is formed using a straight, current-carrying wire, together with suitable auxiliary magnetic fields. By measuring the distribution of cold rubidium atoms held in this trap, we detect a weak magnetic field component ΔBz parallel to the wire. This is produced by the current in the wire and is approximately periodic along the wire with period λ = 230 μm. We have measured this field at distances in the range y = 250-350 μm from the centre of the wire. Over this range we find that the decrease of the field is well described by the Bessel function K1(2πy/λ), as one would expect for the far field of a transversely oscillating current within the wire.",

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T1 - Cold atoms probe the magnetic field near a wire

AU - Jones, M. P.A.

AU - Vale, C. J.

AU - Sahagun, D.

AU - Hall, B. V.

AU - Eberlein, C. C.

AU - Sauer, B. E.

AU - Furusawa, K.

AU - Richardson, D.

AU - Hinds, E. A.

PY - 2004/1/28

Y1 - 2004/1/28

N2 - A microscopic Ioffe-Pritchard trap is formed using a straight, current-carrying wire, together with suitable auxiliary magnetic fields. By measuring the distribution of cold rubidium atoms held in this trap, we detect a weak magnetic field component ΔBz parallel to the wire. This is produced by the current in the wire and is approximately periodic along the wire with period λ = 230 μm. We have measured this field at distances in the range y = 250-350 μm from the centre of the wire. Over this range we find that the decrease of the field is well described by the Bessel function K1(2πy/λ), as one would expect for the far field of a transversely oscillating current within the wire.

AB - A microscopic Ioffe-Pritchard trap is formed using a straight, current-carrying wire, together with suitable auxiliary magnetic fields. By measuring the distribution of cold rubidium atoms held in this trap, we detect a weak magnetic field component ΔBz parallel to the wire. This is produced by the current in the wire and is approximately periodic along the wire with period λ = 230 μm. We have measured this field at distances in the range y = 250-350 μm from the centre of the wire. Over this range we find that the decrease of the field is well described by the Bessel function K1(2πy/λ), as one would expect for the far field of a transversely oscillating current within the wire.

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Cold atoms probe the magnetic field near a wire

Abstract

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