Seminář ÚTFA: Pavel Zemánek

The Department of Theoretical Physics and Astrophysics invites you to the department seminary. The content of the seminar will be organizational matters, and short reports, but the main contribution will be a talk given by Pavel Zemanek from Czech Academy of Sciences, Institute of Scientific Instruments. There is also the change of place of the meeting before the seminar, the room Fcom instead of FLenc.

Pavel Zemanek: Optical levitation and cooling of nanoparticles

The seminar will focus on the force interaction between light and nanoparticles in a vacuum. Though such optical forces are tiny, they can levitate a nanoparticle in the light. Such optical levitation in vacuum isolates the nanoparticle from the noisy environment around and the nanoparticle behaves as a weakly damped tiny oscillator. Using various optomechanical interactions, the amplitude of nanoparticle oscillations can be decreased, and even the lowest energy levels allowed by quantum mechanics can be reached. Recent experiments have already succeeded in realizations of such a „macroscopic quantum oscillator“ and have opened the experimental doors to the not fully explored boundary between quantum and classical worlds.