Solid-state light-matter interfaces on the quantum test bench

21 06/2013

Friday, 21 Jun. 2013, 15:30 - 16:30

Presenter: Christoph CLAUSEN - GAP-Optique, Université de Genève
Host: A. Rauschenbeutel
Where: Atominstitut Hörsaal Stadionallee 2, 1020 Wien

Abstract: Solid-state light-matter interfaces based on crystals doped with rare-earth ions have shown great progress in recent years, heading towards quantum technology applications. During my PhD, I performed a series of experiments that tested the suitability of an atomic frequency comb light-matter interface, implemented in a Nd:YSO crystal, for the storage of quantum information. To this end, a dedicated source of entangled photons has been developed, and the storage and retrieval of quantum correlations and entanglement been studied. The experiments show the successful transfer of photonic entanglement to the crystal, and the generation of a matter-matter entangled state between two crystals. These are two of the main steps in a quantum repeater protocol. At the end of my talk, I shall briefly present the current progress towards the teleportation of a polarization qubit into the light-matter interface.