Berlin 2012 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 93: Poster Session: Metal-Semiconductor Hybrid Systems, Plasmonic Systems / Photonic Crystals / Carbon: Diamond & CNT / Quantum Information Systems
HL 93.10: Poster
Donnerstag, 29. März 2012, 16:00–19:00, Poster D
Photonic Crystal Cavities for Temperature and Refractive Index Measurement — •Niko Nikolay1, Carlo Barth1, Andreas W. Schell1, Jürgen Probst2, Max Schoengen2, Bernd Löchel2, Janik Wolters1, and Oliver Benson1 — 1Nano-Optics, Institute of Physics, Humboldt-Universität zu Berlin, Newtonstraße 15, D-12489 Berlin, Germany — 2Department for Micro- and Nanostructured Optical Systems, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Straße 15, D-12489 Berlin, Germany
Nano-photonic devices based on quantum optical effects at the
single-emitter and single-photon level are promising for integrated
quantum technology [1].
In particular, photonic crystal cavities attracted intense research effort,
as the electromagnetic field is strongly localized
and the interaction with incorporated emitters is strongly enhanced.
However, the transition frequency of solid-state quantum emitters typically
exhibits a strong temperature dependence. Thus, a precise thermometer to
monitor and control the local temperature close to the emitter is
needed. We demonstrate how higher order modes in photonic crystal cavities
can be used to tackle this problem. As a side-effect the method can be
used to measure the refractive index of semiconductors in a wide
temperature and wavelength range.
[1] J.L. O’Brien, A. Furusawa, J. Vučković, Photonic quantum technologies, Nature photonics 3:687, 2009.