1. Institute for Quantum Optics, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
2. Center for Integrated Quantum Science and Technology (IQST), Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany
3. NVision Imaging Technologies GmbH, Albert-Einstein-Allee 11, Ulm 89081, Germany