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Where material engineering meets atom optics

Ron Folman, Ben-Gurion University

(Session : Thursday from )

Abstract. We have recently inaugurated a fabrication facility dedicated to miniaturized devices for isolated quantum particles. These particles include hot and cold atoms, ions, molecules and electrons. The facility is intended to provide R&D services to the entire community working on these devices. Several chips have already been shipped to Europe and the US. In this presentation I will review new materials, processes and geometries we are utilizing with the aim of better engineering the environment of the isolated particles, namely the chip, so that hindering effects may be suppressed, while complexity and functionality may be increased. In Fig. 1, the first chip we have produced [1]. Several theoretical estimates will be briefly described [2-4]. Time permitting, I will focus on two specific problems, namely, static magnetic potential corrugations arising from electron scattering in the surface, and spin flips and decoherence originating from thermally activated electron current fluctuations in the surface giving rise to noise (Fig. 2). For the abstract including figures see: http://w3.bgu.ac.il/nanofabrication/Abstract.pdf [1] S. Aigner et al. Science 319, 1226 (2008) [2] Y. Japha et al. Phys. Rev. B77, 201407(R) (2008) [3] T. David* et al. EPJ D48, 321, (2008) – editors’ highlight paper [4] V. Dikovsky et al. arXiv 0808.1897, in print EPJD (2008) * - Tal David, has just received the student graduate award by the American Material Research Society.