SAMOP 2023 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 59: Poster IV

Q 59.2: Poster

Thursday, March 9, 2023, 16:30–19:00, Empore Lichthof

Decoherence of Rigid Rotors due to Emission of Thermal Radiation — •Jonas Schäfer, Benjamin A. Stickler, and Klaus Hornberger — Faculty of Physics, University of Duisburg-Essen, Duisburg

Recent advances in the control of levitated nanoparticles open the door for fundamental tests and sensing applications exploiting their rotational degrees of freedom [1]. This poster presents the quantum master equation of rotational and translational decoherence of internally hot dielectric particles of arbitrary size and shape emitting thermal radiation. We find that even highly symmetric objects, such as spheres, exhibit orientational decoherence since the internal excitations sourcing the emitted fields break the symmetry of the particle. We quantify the resulting decoherence rates for upcoming experiments with nanoscale to microscale objects.

[1] Stickler, Hornberger, and Kim, Nat. Rev. Phys. 3, 589-597 (2021)