Cold atoms probe the magnetic field near a wire

Eberlein, C.C., Jones, M.P.A., Vale, C.J., Sahagun, D., Hall, B.V., Sauer, B.E., Furusawa, K ., Richardson, D. and Hinds, E.A. (2003) Cold atoms probe the magnetic field near a wire. Journal of Physics B, 37. ISSN 0953-4075

Download (197kB) | Preview


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.

Item Type: Article
Keywords: Cold atoms magnetic field
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics
Depositing User: Gemma Farrell
Date Deposited: 28 Sep 2007
Last Modified: 07 Mar 2017 02:46
Google Scholar:44 Citations

View download statistics for this item

📧 Request an update