Seminarium om teoretisk fysik - Witlef Wieczorek

Towards quantum experiments with levitated micrometer-sized particles

Abstract

Quantum states of massive objects have fascinated since the inception of quantum mechanics [1]. Nowadays molecules of thousands of atoms and nanomechanical resonators weighing picograms can be brought into quantum states [2]. This capability enables tests of the validity of quantum mechanics and provides new avenues for quantum sensing technologies. To explore even more massive quantum systems requires exceptional isolation of the system from the environment and precise control over its quantum state. I will present first steps in the development of a new experimental platform that may allow quantum control over the motion of objects with masses larger than 10^10 atomic mass units. This platform is based on magnetically levitating a superconducting microparticle in cryogenic vacuum [3].

[1] Erwin Schrödinger, Naturwissenschaften 23, 807–812 (1935) [2] Markus Arndt and Klaus Hornberger, Nature Physics 10, 271 (2014) [3] Martí Gutierrez Latorre, Gerard Higgins, Achintya Paradkar, Thilo Bauch, Witlef Wieczorek, arXiv:2210.13451 [quant-ph] (2022)

The seminar is held in hybrid form

Participate on campus or via Zoom.

On campus: PJ lecture hall
Zoom link: https://gu-se.zoom.us/j/64681043702

Read more about the seminar series

Theoretical Physics Seminar