Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 29: Photonik 2

Q 29.4: Vortrag

Dienstag, 13. März 2012, 14:45–15:00, V38.01

Signal-to-noise ratio for EIT-based photon storage in warm vapour — •Tobias Latka, Andreas Neuzner, Christian Noelleke, Andreas Reiserer, Stephan Ritter, Eden Figueroa, and Gerhard Rempe — Max Planck Institut of Quantum Optics, Hans Kopfermann Str. 1, 85748 Garching

A quantum repeater is an essential element for the realization of long distance quantum communication. Paramount to this task is the implementation of optical quantum memories. Simple, warm atomic vapour systems have clear potential to achieve this goal as they are truly practical and easy to operate. In this work we explore the signal-to-noise ratio of an EIT-based quantum interconnect with incident fields at the single-photon level as a means to determine their feasibility to operate in the quantum regime. In order to perform this task accurately, filtering of the optical control field is a prerequisite. We discuss our filtering results in which we have achieved ∼ 120 dB attenuation factor, and explore the possibilities of this setup as a quantum engineering device to achieve full control over the temporal shape of single photons generated from a cavity QED based source.