Magnetic levitation and characterisation of micro- and nanodiamonds towards generating macroscopic spatial superpositions

by Mrs. Karishma Gokani

Warwick University

at Quantum optics seminar

Wed, 26 Nov 2025, 16:00
Zoom only

Abstract

Link: https://us02web.zoom.us/j/81643312099?pwd=yaSbYq64m8sziSG4LMxSaz7jae1Pkg.1

Abstract:
Microdiamonds containing single negatively charged nitrogen vacancy centres (NV-) are a promising platform to test the macroscopic limits of quantum mechanics. I present work on levitating microdiamonds in a magnetic trap at sub-atmospheric pressures, with the aim of achieving quantum control of the NV- qubit. Once this has been achieved, the goal is to create a levitated spin state superposition, which will be used to create a spatial superposition of a diamond. In parallel, we work on fabricating high-quality diamond nano- and microparticles through ball-milling and nanofabrication techniques. These are subsequently characterised using confocal fluorescent microscopy, scanning electron microscopy and atomic force microscopy to determine spin coherence times and particle size.

Created on 23-11-2025 by Folman, Ron (folman)
Updaded on 23-11-2025 by Folman, Ron (folman)