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

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

31 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
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1088/0953-4075/37/2/L01

Cite this

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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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