Photonische Netzwerke für einzelne Emitter der seltenen Erden

• Antragsteller: Dr. Roman Kolesov
• Fachliche Zuordnung: Experimentelle Physik der kondensierten Materie
• Förderung: Förderung von 2014 bis 2018
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 262528081

• Erstellungsjahr: 2018

Zusammenfassung der Projektergebnisse

The main goal of the project was to devise a scalable way of producing on-chip photonic structures for rare-earth emitters. The most important structures are high-finesse optical resonators of low mode volume with the aim of realization of rare-earth-based cavity quantum electrodynamics system with strong coupling regime between the resonator and the rare-earth ions. Within the framework of the project, on-chip whispering gallery cavities with high quality factor (Q>150000) and low mode volume (V<303) were demonstrated using thin films of amorphous titania (TiO2) and lithium niobate (LiNbO3). The latter was also shown to be widely electrically tunable (>200GHz). Coupling of various rare-earth emitters produced by ion implantation to the cavities was demonstrated. The implantation yield of rare-earth ions was assessed and appeared to be unprecedentedly high (up to 91%). Coherent optical and spin properties of implanted and native rare-earth ions in crystals were studied. The combined results of the project show excellent potential of rare-earth-based cavity QED systems as quantum computer qubits as well as single photon sources for quantum communication.

Projektbezogene Publikationen (Auswahl)

• “All-Optical Preparation of Coherent Dark States of a Single Rare Earth Ion Spin in a Crystal”. Phys. Rev. Lett. 115, 093602 (2015)
  Xia, Kangwei; Kolesov, Roman; Wang, Ya; Siyushev, Petr; Reuter, Rolf; Kornher, Thomas; Kukharchyk, Nadezhda; Wieck, Andreas D.; Villa, Bruno; Yang, Sen & Wrachtrup, Jörg
  
• “Creation of fluorescent Cerium-Dopants in YAG by Ion Implantation” DPG Spring Meeting 2015, Heidelberg, 23-27.03.2015
  T.Kornher
  
• “Spectroscopy of single Ce ions in YAG” 12th International Conference on Hole Burning, Single Molecule and Related Spectroscopies: Science and Applications, Tartu, Estonia, 24–27.08.2015
  K. Xia
  
• “Production yield of rare-earth ions implanted into an optical crystal”. Appl. Phys. Lett. 108, 053108 (2016)
  Kornher, Thomas; Xia, Kangwei; Kolesov, Roman; Kukharchyk, Nadezhda; Reuter, Rolf; Siyushev, Petr; Stöhr, Rainer; Schreck, Matthias; Becker, Hans-Werner; Villa, Bruno; Wieck, Andreas D. & Wrachtrup, Jörg
  
• “Amorphous Silicon-Doped Titania Films for on-Chip Photonics”. ACS Photonics 4, 1101(2017)
  Kornher, Thomas; Xia, Kangwei; Kolesov, Roman; Villa, Bruno; Lasse, Stefan; Sandu, Cosmin S.; Wagner, Estelle; Harada, Scott; Benvenuti, Giacomo; Becker, Hans-Werner & Wrachtrup, Jörg
  
• “Spectroscopy of single rare earth solid-state qubits” Quantum Information Workshop 2017, Hong Kong, 07-09.07.2017
  K.Xia
  
• “Superresolution Microscopy of Single Rare-Earth Emitters in YAG and H3 Centers in Diamond”. Phys. Rev. Lett. 120, 033903 (2018)
  Kolesov, R.; Lasse, S.; Rothfuchs, C.; Wieck, A. D.; Xia, K.; Kornher, T. & Wrachtrup, J.