August 30, 2021 to September 3, 2021
University of Innsbruck
Europe/Zurich timezone

【437】Testing quantum mechanics with heavy objects -- using magnetically-levitated superconducting microparticles

Sep 1, 2021, 6:30 PM
Room E

Room E

Talk Atomic Physics and Quantum Optics Atomic Physics and Quantum Optics


Gerard Higgins (IQOQI Wien, OEAW; Chalmers University of Technology)


It is unclear how our classical world emerges from the quantum world. It is also unclear how to incorporate effects of gravity into quantum mechanics. To get experimental insights into these problems, we need to prepare larger masses in quantum states.

Magnetically-levitated superconducting microparticles make promising systems for doing this. We work with a lead microsphere of ~10^18 amu (~1ug) which we isolate from its surroundings using magnetic levitation. We read out the sphere’s COM motion using a SQUID and cool the motion by applying additional magnetic fields. We will extend our control by coupling the sphere’s motion to superconducting resonators and qubits.

Primary authors

Gerard Higgins (IQOQI Wien, OEAW; Chalmers University of Technology) Mr Joachim Hofer (University of Vienna) Dr Philip Schmidt (IQOQI Vienna, OEAW) Mr Martí Gutierrez Latorre (Chalmers University of Technology) Mr Achintya Paradkar (Chalmers University of Technology) Dr Stefan Minniberger (University of Vienna) Mr Dominik Ilk (University of Vienna) Dr Michael Trupke (University of Vienna) Prof. Witlef Wieczorek (Chalmers University of Technology) Prof. Markus Aspelmeyer (University of Vienna; IQOQI Vienna, OEAW)

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