Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 43: Poster II
Q 43.75: Poster
Mittwoch, 20. März 2013, 16:00–18:30, Empore Lichthof
Ultra-low Noise Quantum Interconnect at Room Temperature — •Josef Schupp1, Eden Figueroa1,2, Tobias Latka1, Andreas Neuzner1, Christian Nölleke1, Andreas Reiserer1, Stephan Ritter1, and Gerhard Rempe1 — 1Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermann-Str. 1, D-85748 Garching, Germany — 2Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
The development of a simple and inexpensive platform for interconnecting light and matter at the quantum level has recently emerged as one of the key challenges of quantum engineering. Although elementary quantum memory capabilities have already been shown using ensembles of cold atoms [1] or single atoms in optical cavities [2], a scalable-friendly architecture might still require room temperature operation [3]. Here we use an ensemble of Rb atoms in the gaseous state and store light pulses at the single-photon level using EIT to demonstrate that even in a common vapor cell it is possible to achieve quantum-level operation with ultra-low background noise. We have obtained a measured signal-to-background noise ratio of 3.5, which is the first time this figure of merit has been lifted beyond unity for experiments with room temperature operation. In addition, we also show the capabilities of the system to arbitrarily tailor the temporal properties of the retrieved single-photon-level pulses.
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