Berlin 2014 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 16: Poster: Quantum information, micromechanical oscillators, matter wave optics, precision measurements and metrology
Q 16.6: Poster
Montag, 17. März 2014, 16:30–18:30, Spree-Palais
Single-mode EPR-entanglement via narrowband filtering of multimode type-II parametric down-conversion — Andreas Christ1, Cosmo Lupo2, •Matthias Reichelt3, Torsten Meier3, and Christine Silberhorn1 — 1Applied Physics University of Paderborn, Warburger Str. 100, D-33098 Paderborn, Germany — 2Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge MA, USA — 3University of Paderborn, Warburger Str. 100, D-33098 Paderborn, Germany
Entanglement is an essential key for quantum-information and communication applications. Here, we present a method to generate single-mode EPR-entanglement via narrowband spectral filtering of multimode type-II parametric down-conversion [1]. In the framework of continuous variables [2] we show that due to the filtering process all higher-order modes are effectively suppressed. Performing a subsequent mode optimization algorithm [3] reveals that the filtered output contains EPR-squeezing in a single optical mode indeed.
[1] A. Christ, B. Brecht, W. Mauerer, and C. Silberhorn,
New Journal of Physics 15, 053038 (May 2013)
[2] S.L. Braunstein and P. van Loock,
Rev. Mod. Phys. 77 (2005).
[3] A. Walther, M. Reichelt, and T. Meier,
Photonics and Nanostructures - Fundamentals and Applications 9, 328 (2011).