Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 29: Photonik 2

Q 29.3: Vortrag

Dienstag, 13. März 2012, 14:30–14:45, V38.01

Quantum teleportation between two remote single atoms — •Carolin Hahn, Christian Nölleke, Andreas Reiserer, Andreas Neuzner, Stephan Ritter, and Gerhard Rempe — Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching

One of the fascinating consequences of quantum mechanics is the possibility to teleport a quantum state. It allows for the transmission of a quantum state over arbitrary distances and therefore enables long-distance quantum communication based on a quantum repeater scheme. Central to current experimental efforts in this direction is the teleportation between remote quantum memories forming the nodes of future quantum networks. We aim for quantum teleportation between two such nodes in independent laboratories, each consisting of a single atom trapped in an optical cavity. The envisioned teleportation scheme makes use of two major capabilities of these atom-cavity systems: the creation of atom-photon entanglement and faithful quantum state transfer from one atom onto the polarization of a single photon. These techniques have to be combined with a Bell state measurement on the two photons. Their interference on a beamsplitter and subsequent polarization-dependent detection allows for probabilistic teleportation of arbitrary quantum states between the two single atoms. Our progress towards the realization of this goal will be discussed.