Berlin 2014 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

Q: Fachverband Quantenoptik und Photonik

Q 30: Poster: Photonics, laser development and applications, ultrashort laser pulses, quantum effects

Q 30.24: Poster

Dienstag, 18. März 2014, 16:30–18:30, Spree-Palais

Optical collection efficiency enhancement of shallow-implanted nitrogen vacancy centers in diamond by top-down fabricated nanopillars — •Seyed Ali Momenzadeh1, Felipe Fávaro de Oliveira1, Andreas Brunner1, Andrej Denisenko1, Sen Yang1, Ilja Gerhardt1,2, Friedemann Reinhard1, and Jörg Wrachtrup1,213. Physikalisches Institut, Universität Stuttgart, Stuttgart — 2Max Planck Institute for Solid State Research, Stuttgart

The negatively charged nitrogen vacancy (NV) center in diamond is a single photon source with a variety of applications such as quantum information and nanoscale magnetometry. For all of these applications, optical collection efficiency remains a crucial challenge. Due to total internal reflection, most of the emitted photons cannot be collected by conventional detection optics. In the last few years, this problem has been tackled by different photonic structures such as engineered diamond nanopillar [1] and solid immersion lens (SIL) [2] containing NV centers. In this contribution, we present an optimized scheme for the fabrication of such nanopillars employing electron beam lithography and plasma etching. We thoroughly study shallow-implanted single NV centers (few nanometers beneath the diamond surface) embedded onto those nanopillars, as they are of high potential for future magnetometry applications. We find that these nanopillars enhance detected luminescence up to fivefold, even for shallow NV centers. In addition, we present benchmark measurements of the centers' coherence times. [1] Thomas M. Babinec et al. Nature Nanotechnology, 5, 195 - 199 (2010) [2] P. Siyushev et al. Applied Physics Letters 97, 241902 (2010)

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2014 > Berlin