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OSA Workshop on Entanglement and Quantum Decoherence

Quantum Lithography and Microscopy

Muhammad Suhail Zubairy

Published Jan 1, 2008• 0 citations
Publisher

Abstract

We discuss two related problems: qauntum lithography with classical light and the precision measurement of small separations between two atoms or molecules placed in a standing wave laser field.
DOI
10.1364/weqd.2008.aps3

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Atom lithography uses standing wave light fields as arrays of lenses to focus neutral atom beams into line patterns on a substrate. Laser cooled atom beams are commonly used, but an atom beam source with a small opening placed at a large distance from a substrate creates atom beams which are locally geometrically collimated on the substrate. These beams have local offset angles with respect to the substrate. We show that this affects the height, width, shape, and position of the created structures. We find that simulated effects are partially obscured in experiments by substrate-dependent diffusion of atoms, while scattering and interference just above the substrate limit the quality of the standing wave lens. We find that in atom lithography without laser cooling the atom beam source geometry is imaged onto the substrate by the standing wave lens. We therefore propose using structured atom beam sources to image more complex patterns on subwavelength scales in a massively parallel way.