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Delocalization of Ultracold Atoms in a Disordered Potential Due to Light Scattering by Nowak, Boris; Kinnunen, Jami J.; Holland, Murray J.; Schlagheck, Peter is a scholarly article available to read on EtoBox.

What is Delocalization of Ultracold Atoms in a Disordered Potential Due to Light Scattering about?

We numerically study the expansion dynamics of ultracold atoms in a one-dimensional disordered potential in the presence of a weak position measurement of the atoms. We specifically consider this position measurement to be realized by a combination of an external laser and a periodic array of optical microcavities along a waveguide. The position information is acquired through the scattering of a near-resonant laser photon into a specific eigenmode of one of the cavities. The time evolution of the atomic density in the presence of this light scattering mechanism is described within a Lindblad master equation approach, which is numerically implemented using the Monte Carlo wave function technique. We find that an arbitrarily weak rate of photon emission leads to a breakdown of Anderson localization of the atoms.

Author

Nowak, Boris; Kinnunen, Jami J.; Holland, Murray J.; Schlagheck, Peter

Published

2012

Language

EN