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Q: Fachverband Quantenoptik und Photonik

Q 54: Quantum information: Photons and nonclassical light I

Q 54.5: Talk

Thursday, March 21, 2013, 15:15–15:30, E 001

Spectral and spatial correlations of PDC in waveguide arrays — •Regina Kruse, Fabian Katzschmann, Andreas Christ, Kaisa Laiho, and Christine Silberhorn — Universität Paderborn, Integrierte Quantenoptik, Warburger Str. 100, D-33098 Paderborn

Integrated optical devices form a compact and easy to manipulate basis for all types of optical applications. Especially weakly coupled waveguide arrays offer the advantage of highly stable interferometric experiments, which can be used for optical simulations of solid state systems. In the non-linear regime, localization effects like solitons can be observed [1]. Here, we investigate in detail the spectral and spatial correlations of parametric down-conversion (PDC) in waveguide arrays [2], which have been studied extensively in the context of classical optics and quantum walks [3,4]. We pay special attention to the engineering of hyperentangled multimode quantum states in the spectral and spatial degree of freedom, which allow for scalable and robust quantum information applications.

[1] H. S. Eisenberg et al. PRL 81 (3383), 1998

[2] A. Solntsev et al., PRL 108 (023601), 2012

[3] A. Peruzzo et al., Science 329 (1500), 2010

[4] L. Sansoni et al. PRL 108 (010502), (2012)