Seminar über Quanten-, Atom- und Neutronenphysik (QUANTUM)
May 8, 2014 at 5 p.m. c.t. in Lorentz-RaumProf. Dr. Peter van Loock
Institut für Physik
loock@uni-mainz.de
Dr. Lars von der Wense
Institut für Physik
lars.vonderwense@uni-mainz.de
Quantum memories that link quantum states of light to less volatile states of matter are a key ingredient of quantum networks and a building block for quantum computation. Teleportation between distant material objects using light as the quantum information carrier has been a particularly exciting goal. Here, I will discuss experiments based on continuous variable measurement and feedback, which, in a certain sense, can perform storage, retrieval, and teleportation protocols deterministically.
Notable results are the storage of state-alphabets of squeezed light in the collective atomic state of room temperature Cesium vapours, and the teleportation of coherent spin states over laboratory distances. I will discuss some benefits and prospects that arise from implementing these techniques with ultra-cold atoms.