Quantum optics seminar
Magnetic levitation and characterisation of micro- and nanodiamonds towards generating macroscopic spatial superpositions
Mrs. Karishma Gokani
Warwick University
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.
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.