Stern-Gerlach matter wave interferometry in the lab - from a single atom towards a billion atoms and a test of quantum gravity

by Dr. Or Dobkowski

Ben-Gurion University of the Negev

at Quantum optics seminar

Wed, 17 Dec 2025, 16:00
Zoom only

Abstract

Link: https://us02web.zoom.us/j/84030855162?pwd=xEEPiv1VkhbnEA3JLkWyhYYFPGYbw0.1

Abstract:
I will present our work on the realization of the novel atomic Stern-Gerlach interferometer (SGI), including our recent observation of the phase of a freely falling particle and its relation to the quantum equivalence principle. I will review the proposal to use the SGI as a probe of quantum gravity by measuring the gravitational entanglement between spatial superpositions of a nanodiamond with a single spin. Finally, I will present our progress toward this goal, including the trapping and cooling of nanodiamonds, fast charge control, and the development of a deterministic source.

Created on 13-12-2025 by Folman, Ron (folman)
Updaded on 13-12-2025 by Folman, Ron (folman)