This group has a focus on testing quantum physics using particles levitated in optical fields. Why do we use light? Well, because that was the only field on the block! Now we propose to use electrical fields and qubits to test the limits of quantum mechanics. Find a longer synopsis here.
Quantum electromechanics with levitated nanoparticles
Lukas Martinetz, Klaus Hornberger, James Millen, M. S. Kim & Benjamin A. Sticklernpj Quantum Information 6, 101 (2020)