Düsseldorf 2007 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 34: Poster Quanteninformation
Q 34.2: Poster
Tuesday, March 20, 2007, 16:30–18:30, Poster C
Setup of an Improved Single-Photon Source — •Jörg Bochmann1, Gunnar Langfahl1, Christoph Erbel1, Axel Kuhn2, and Gerhard Rempe1 — 1MPI für Quantenoptik, Hans-Kopfermann-Str. 1, D-85748 Garching, Germany — 2Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom
Single atoms coupled to cavities provide unique systems to study the interaction of light and matter in the quantum regime. Deterministic generation of single photons has been demonstrated [1], but the interaction time of atom and cavity is short (35 µ s). However, recently discovered cavity-cooling schemes enable deterministic coupling of atom and cavity for more than 10 s [2,3]. Using these techniques in an improved single photon source will tremendously increase duty-cycles for single photon generation and enable experiments on atom-photon and atom-atom entanglement.
In our new setup, we have trapped 87Rb atoms in a MOT and transported to a high finesse cavity in a dipole trap. The cavity parameters put the system at the boundary of the strong coupling regime and coupling of atoms to the cavity has already been observed. Improvements regarding single atom detection and stabilization of the cavity to a non-atomic resonance using an optical frequency comb are under way, latest results will be presented.
[1] T. Wilk, et al., arXiv:quant-ph/0610227 (2006)
[2] S. Nußmann et al, Nature Physics 1, 122 (2005)
[3] K. Murr, et al., Phys. Rev. A 73, 063415 (2006)