Rostock 2019 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 29: Quantum Effects
Q 29.3: Talk
Wednesday, March 13, 2019, 11:15–11:30, S Gr. HS Maschb.
Rotational Alignment Decay and Decoherence of Molecular Superrotors — •Benjamin A. Stickler1, Farhad Taher Ghahramani2, and Klaus Hornberger1 — 1University of Duisburg-Essen, Faculty of Physics, Duisburg, Germany — 2School of Physics, Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
We present the quantum master equation describing the coherent and incoherent dynamics of a rapidly rotating molecule in presence of a thermal background gas [1]. The master equation relates the rate of rotational alignment decay and decoherence to the microscopic scattering amplitudes, which we calculate for anisotropic van der Waals scattering. For large rotational energies, we find quantitative agreement of the resulting alignment decay rate with recent superrotor experiments [2].
[1] B. A. Stickler, F. Taher Ghahramani, and K. Hornberger, Phys. Rev. Lett. (in press) (2018).
[2] A. A. Milner, A. Korobenko, J. W. Hepburn, and V. Milner, Phys. Rev. Lett. 113, 043005 (2014).