Hamburg 2009 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 23: Quanteninformation: Photonen II

Q 23.4: Vortrag

Dienstag, 3. März 2009, 14:45–15:00, VMP 6 HS-D

Photon Pair Generation in Photonic Crystal Fibres — •Benjamin Brecht, Christoph Söller, Peter J. Mosley, Leyun Zang, Alexander Podlipensky, Philip St.J. Russell, and Christine Silberhorn — Max Planck Research Group IOIP, Günther-Scharowsky-Strasse 1 / Bau 24, 91058 Erlangen

Spontaneous four-wave mixing in Photonic Crystal Fibres (PCF) is a promising approach to creating a heralded single photon source suitable for quantum computation and communication. The possibility of tailoring the dispersion profile of a PCF allows for a high degree of control over the spectral properties of the generated photons.

We are working on a fibre-based heralded single photon source. The heralding signal photon is emitted in the visible wavelength regime, thus allowing for an efficient detection utilising silicon avalanche photodiodes (APDs). The idler photon is generated at 1.55µm and is therefore suitable for a low-loss transmission by standard telecommunication fibres. Spectral decorrelation of the photon pair ensures the indistinguishability of corresponding photons emitted from different sources and permits quantum interference without narrow bandpass filtering.

We report on the current state of the project.