Mainz 2017 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 53: Poster: Quantum Optics and Photonics III
Q 53.53: Poster
Donnerstag, 9. März 2017, 17:00–19:00, P OG2
Generating entanglement between a trapped ion and the time-bin of a photon — •Konstantin Friebe1, Moonjoo Lee1, Dario A. Fioretto1, Markus Teller1, Klemens Schüppert1, Florian R. Ong1, Pierre Jobez1, Florian Kranzl1, Rainer Blatt1,2, and Tracy E. Northup1 — 1Institut für Experimentalphysik, Universität Innsbruck, Innsbruck, Österreich — 2Institut für Quantenoptik und Quanteninformation, Innsbruck, Innsbruck, Österreich
While small-scale quantum computers, e.g., based on trapped ions, are already in existence, scaling up to larger numbers of qubits proves technically challenging. One possible solution to this problem is a distributed quantum computer, consisting of several small-scale quantum computers, linked together in a quantum network. Such linking of separate quantum nodes is also a requirement for building quantum repeaters for long-distance quantum communication.
Here, we describe the current status of our quantum node at the Universität Innsbruck: we report on the implementation of a laser beam for addressing single ions in a crystal of multiple trapped ions, and describe a protocol and its implementation for the generation of entanglement between the electronic state of one trapped ion and the time-bin degree of freedom of a single photon. This protocol is an alternative to the more standard encoding of quantum information in the polarization degree of freedom of photons and can thus be used for systems in which well-defined photon polarization can not be achieved.