Talk by Christine Silberhorn, Universität Paderborn, Angewandte Physik, Integrierte Quantenoptik – Niels Bohr Institute - University of Copenhagen

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Niels Bohr Institute > Calendar > 2010 > Talk by Christine Silb...

Talk by Christine Silberhorn, Universität Paderborn, Angewandte Physik, Integrierte Quantenoptik

For the generation of quantum states of light parametric downconversion has become an established standard, but the implementation of compact sources for use in larger networks is still challenging.

We employ KTP waveguides and ultrafast pump pulses with engineered dispersion properties to generate photon number correlated photonic state in genuine ultrafast single mode pulses. In the low pump power regime this allows the optimized preparation of pure heralded single photons needed with exceptionally high generation efficiencies and very good state preparation fidelities.

For higher pump powers the same process can be utilized to implement a very compact genuine ultrafast two-mode squeezer in a single-pass configuration with exceptional brightness featuring significant squeezing values.