ELOTEQ · Interfacing Levitated Optomechanics with Superconducting Qubits

The aim of this project is to establish how the quantum state of an aspherical nanoparticle can be coherently interfaced with a superconducting circuit. Its main efforts can be summarized by two goals: (i) We will develop the theoretical tools required to manipulate the ro-translational quantum state of a levitated nanoparticle possessing a monopole and higher multipole moments by connecting it to a superconducting qubit. (ii) We will investigate how entanglement between the nanoparticle and the circuit can be exploited for earth-based macroscopic interference experiments and for coherence-enhanced force and torque sensing. Networking levitated nanoscale objects with quantized electrical circuits and qubits combines the high Q-factors and isolation of the former with the scalability and control of the latter. This project will point the way towards new fundamental tests of quantum physics and towards quantum technology.