Quantum Electrical and Optical Engineering

In order to integrate quantum systems into larger networks and prototype quantum technologies that maintain coherence of the internal quantum system, the need for a dedicated Quantum Electrical and Optical Engineering becomes obvious.  Quantum optical devices need to be integrated with waveguide and detector structures. Deliberately designed metal nanostructures mark the borderline between classical antenna technology and modern quantum optics. Moreover, novel quantum sensors being developed in atom optics as well as solid state quantum physics need to be integrated into devices and new materials. For example, the recent surge in interest for carbon based quantum electronic and optical systems needs to be followed up by integration into practical microelectronic circuits. Such systems can also be used as ultra-sensitive devices for the integration of different properties (e.g. magnetic and electric ones) in the same quantum-device. The creation of such sensors and of atomic and molecular quantum systems behaving in an almost ideal way and can be reliably measured is an open challenge.

Research topics (groups)

  • Layout, fabrication and characterization of integrated quantum and atom optics circuitry (Berroth, Frühauf, Giessen, Kubanek, Michler, Pfau, Schulze, Wrachtrup)
  • Quantum physics at the interface between classical electrical circuits and quantum devices (Ankerhold, Keimer, Mannhart, Takagi)
  • High-frequency electrically driven quantum light sources (Michler, Schulze)
  • Realization of semiconductor spintronics in a silicon-based substrate (Schulze, van Slageren)