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Frontiers in Optics

Nanophotonics with Single Photons from NV Centers in Three-Dimensional Laser-Written Microstructures

Andreas Wolfgang Schell, Tanja Neumer, Qiang Shi, Johannes Kaschke, Joachim Fischer, Rico Henze, Janik Wolters, Martin Wegener, Oliver J. Benson

Published Jan 1, 2013• 0 citations
Publisher

Abstract

Three dimensional quantum optical elements are built using a hybrid material consisting of nanodiamonds and a photoresist. Single photons from nitrogen-vacancy centers are routed between them and scalable on-demand fabrication of such elements is introduced.
DOI
10.1364/fio.2013.fw1c.2

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Direct integration of single photon emitters into easy-to-fabricate functional microstructures is a major step towards a future quantum optical technology. Because of its photostability and versatile spin properties the nitrogen vacancy center (NV center) in diamond is one of the most promising candidates as source of single photons [1]. One of its drawbacks lies in the properties of its host crystal. Diamond is hard to process and therefore it is difficult to manufacture complex integrated structures in a reliable way. One way to avoid these difficulties is to use nanodiamonds in a so called hybrid approach [2]. Hybrid systems comprise different constituents from different materials. By exploiting the individual advantages of the individual elements it is possible to build systems with properties exceeding the properties of the individual subsystems.
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Defect centers in diamond are regarded as a promising candidate for future solid state quantum technology. In particular the nitrogen vacancy (NV) center attracts researchers attention, as it promises to emit indistinguishable single photons and provides a triplet ground state with ultra long spin coherence times. In particular NV centers in nano diamonds are attractive, since they can be integrated into quantum photonic hybrid devices with nano manipulation techniques. We report on first demonstrations of the integration of NV-centers into photonic hybrid devices, and point out future applications. Beside the striking demonstrations of the integrability, nanodiamonds have several drawbacks. In particular the spectral diffusion of the zero-phonon line is addressed.