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Q: Fachverband Quantenoptik und Photonik
Q 40: Poster: Quantum Optics and Photonics III
Q 40.24: Poster
Dienstag, 6. März 2018, 16:15–18:15, Zelt West
Localized Modes in leaky dielectric nanoresonators: a general optimization strategy for photon extraction — •Niko Nikolay1, Günter Kewes1, Felix Binkowski2, Lin Zschiedrich2, Sven Burger2, and Oliver Benson1 — 1Institut für Physik, Humboldt-Universität zu Berlin — 2Zuse Institute Berlin
When considering solid state emitters and their emitted photons to act as qubits and flying qubits in a quantum network, it is crucial to efficiently link both. A technical realization of this link is an antenna. Current design concepts often suffer from a large footprint, quenching or a complex fabrication process [1-3]. Here we show another very general design concept where the Kerker effect [4] is used to redirect and collimate emission from single emitters, exemplary discussed on a nitrogen vacancy (NV) center. The antenna is an easy to fabricate cylindrical protrusion (a nanodisk with small aspect ratio) made from a medium of moderate or high refractive index (e.g., diamond, ZnO, SiN or GaAs) etched into a substrate of the same material. Such a simple structure supports leaky localized modes that lead to directed emission by de- and constructive interference. To analyze the antenna we employ a versatile optimized quasi normal mode method that gives a clear view on the otherwise obscured underlying physics of this antenna type. Emitters may be incorporated inside the antenna or placed on top.
[1] P. Muehlschlegel, science 308.5728, 1607-1609 (2005)
[2] K. G. Lee, Nature Photonics 5.3, 166-169 (2011)
[3] M. Gschrey, Nature communications 6 (2015)
[4] M. Kerker, JOSA 73.6, 765-767 (1983)