Berlin 2014 – scientific programme

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SYQR: Symposium Quantum Repeater

SYQR 1: Flying/Stationary Qubit Conversion and Entanglement Generation

SYQR 1.4: Talk

Monday, March 17, 2014, 11:15–11:30, UDL HS2002

Remote entanglement generation with parabolic mirrors — •Nils Griebe, József Zsolt Bernád, and Gernot Alber — Institut für Angewandte Physik, Technische Universität Darmstadt, 64289 Darmstadt, Germany

We develop an entanglement generation scheme which uses parabolic mirrors in a multimode and single photon scenario in order to create an entangled state between two remote material qubits. The qubits are implemented as internal states of trapped ions located in the foci of the two parabolic mirrors [1] which face each other. This configuration which might be used in free space communication causes an interesting dynamics of the two ions and the radiation field. We analyze the dynamics by using semiclassical methods and a photonic path representation of the time evolution operator. In this proposal we use the spontaneous decay as a tool for distant entanglement generation and not as an effect to evade.

[1]Alber,G., Bernád,J.Z., Stobinska,M., Sánchez-Soto,L.L., Leuchs,G.: QED with a parabolic mirror, Phys. Rev. A 88, 023825 (2013).