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B. A. Stickler, B. Papendell, and K. Hornberger
Spatio-Orientational Decoherence of Nanoparticles
Phys. Rev. A 94, 033828 (2016)


Motivated by trapping and cooling experiments with nonspherical nanoparticles, we discuss how their combined rotational and translational quantum state is affected by the interaction with a gaseous environment. Based on the quantum master equation in terms of orientation-dependent scattering amplitudes, we evaluate the localization rate for gas collisions off an anisotropic van der Waals-type potential and for photon scattering off an anisotropic dielectric. We also show how pure angular momentum diffusion arises from these open quantum dynamics in the limit of weak anisotropies.

(9 pages, 2 figures)   [pdf, journal, arXiv:1607.04508 ]

doi:10.1103/PhysRevA.94.033828            (c) The American Physical Society