Abstract

We have fabricated and tested an atom chip that operates as a matter wave interferometer. In this paper we describe the fabrication of the chip by ion-beam milling of gold evaporated onto a silicon substrate. We present data on the quality of the wires, on the current density that can be reached in the wires and on the smoothness of the magnetic traps that are formed. We show that the chip is able to operate as an interferometer with good phase stability.

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