Dresden 2014 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 86: Photonic crystals and cavities

HL 86.4: Talk

Thursday, April 3, 2014, 10:15–10:30, POT 051

Photonic Crystal Grating Couplers for Quantum Applications — •Janik Wolters¹, Andreas W. Schell¹, Carlo Barth¹, Jürgen Probst², Max Schoengen², Bernd Löchel², and Oliver Benson¹ — ¹Humboldt-Universität zu Berlin, Institut für Physik, AG Nano-Optik, Newtonstraße 15, 12489 Berlin — ²Helmholtz Zentrum Berlin, Institut Nanometeroptik und Technologie, Albert-Einstein-Str. 15, 12489 Berlin

Photonic crystals [1] are a promising platform for integrated quantum networks. In recent years, coupling of single emitters to photonic crystal cavities as first step towards such systems has been demonstrated [2].

Additional key ingredients are efficient photon guiding and coupling to the far-field. The latter is crucial since it forms the interface between photonic chips and the macroscopic measurement environment.

We present our latest results on the design and characterization of efficient grating couplers with large directivity and small footprint, as well as their integration into photonic networks.
[1] J. Wolters, et al., Thermo-optical response of photonic crystal cavities operating in the visible spectral range. Nanotechnology 24, 315204 (2013).

[2] J. Wolters, et al., Enhancement of the zero phonon line emission from a single nitrogen vacancy center in a nanodiamond via coupling to a photonic crystal cavity. Applied Physics Letters 97, 141108 (2010).