Dresden 2011 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 28: Quantum Information: Quantum Communication 1
Q 28.4: Vortrag
Mittwoch, 16. März 2011, 11:15–11:30, SCH A01
Broadband mode selector based on spectrally engineered sum frequency generation — •Benjamin Brecht1, Andreas Eckstein1,2, and Christine Silberhorn1,2 — 1Integrated Quantum Optics, Applied Physics, University of Paderborn, 33098 Paderborn — 2Max Planck Institute for the Science of Light, 91058 Erlangen
We propose broadband mode selection, a method for accessing the spectrally broadband mode structure of ultrafast quantum states of light. This opens up a new degree of freedom for quantum information coding which was unitl now not practically accessible. Based on spectrally engineered sum frequency generation (SFG), it allows us to pick well-defined pulsed broadband modes from an ultrafast multi-mode state without destroying its coherent pulse characteristics. By shaping the pulse of the bright SFG pump beam, different orthogonal broadband modes matched to the intrinsic structure of the input state can be addressed individually, extracted spatially with near unit efficiency and interconverted into each other for later interference.