A monolithic immersion metalens for imaging solid-state quantum emitters

• DOI: 10.1038/s41467-019-10238-5
• Publication Date: 2019-06-03T11:03:32Z
• Authors: Tzu-Yung Huang; Richard R. Grote; Sander A. Mann; David A. Hopper; Annemarie L. Exarhos; Gerald G. Lopez; Amelia R. Klein; Erik C. Garnett; Lee C. Bassett
• Keywords: Quantum sensor; Nanophotonics

Quantum emitters such as the diamond nitrogen-vacancy (NV) center are basis for a wide range of quantum technologies. However, refraction and reflections at material interfaces impede photon collection, emitters' atomic scale necessitates use free space optical measurement setups that prevent packaging devices. To overcome these limitations, we design fabricate metasurface composed nanoscale pillars acts an immersion lens to collect collimate emission individual NV center. The metalens exhibits numerical aperture greater than 1.0, enabling efficient fiber-coupling emitters. This flexible will lead miniaturization devices in host materials development metasurfaces shape single-photon coupling cavities or route photons based on their state.