Office rooms and labs of the Biomolecular Photonics Group are located in the 1st floor of the Biochemistry building (Nonnenplan 2-4, 1. Stock).
The entrance to the building is located at the corner Teichgraben/Nonnenplan. Just climb the stairs, pass the front gate and go to the 1st floor.
The door to the hallway of the 1st floor is usually locked. Open it with your Thoska Card by placing your Thoska Card in front of the Thoska Card reader right do the door or contact the person you want to meet via the dial pad.