Hannover 2016 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

Q: Fachverband Quantenoptik und Photonik

Q 42: Poster: Quantum Optics and Photonics III

Q 42.23: Poster

Mittwoch, 2. März 2016, 16:30–19:00, Empore Lichthof

A cavity mediated photon-photon gate — •Stephan Welte, Bastian Hacker, Stephan Ritter, and Gerhard Rempe — Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching

Photons are promising candidates for applications in quantum information processing and quantum communication. However, the direct interaction between two photons is negligible in free space, which is a drawback when it comes to the implementation of quantum logic gates between them. A solution to this problem was proposed by Duan and Kimble [1]. A strongly coupled atom in an optical cavity can mediate an effective interaction between two photons. Recently, we experimentally realized a quantum gate between an intracavity atom and a photon which is reflected off the cavity [2]. This atom-photon gate can be a building block of the aforementioned gate protocol for two photons. We will discuss the prospects and challenges for implementing the Duan-Kimble proposal in our setup and report on the current status of the experiment.

[1] L.-M. Duan, H. J. Kimble, Phys. Rev. Lett. 92, 127902 (2004)

[2] A. Reiserer, N. Kalb, G. Rempe and S. Ritter, Nature 508, 237 (2014)