Deterministic Single-Ion Implantation of Rare-Earth Ions for Nanometer-Resolution Color-Center Generation

• DOI: 10.1103/physrevlett.123.106802
• Publication Date: 2019-09-04T20:08:17Z
• Authors: Karin Groot-Berning; Thomas Kornher; Georg Jacob; Felix Stopp; Samuel T. Dawkins; Roman Kolesov; Jörg Wrachtrup; Kilian Singer; Ferdinand Schmidt...
• Keywords: 0301 basic medicine; Quantum Physics; Condensed Matter - Mesoscale and Nanoscale Physics; FOS: Physical sciences; 01 natural sciences; 7. Clean energy; Condensed Matter - Other Condensed Matter; 03 medical and health sciences; 0103 physical sciences; Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Quantum Physics (quant-ph); Other Condensed Matter (cond-mat.other)

9 pages, 7 figures<br/>Single dopant atoms or dopant-related defect centers in a solid state matrix provide an attractive platform for quantum simulation of topological states, for quantum computing and communication, due to their potential to realize a scalable architecture compatible with electronic and photonic integrated circuits. The production of such quantum devices calls for deterministic single atom doping techniques because conventional stochastic doping techniques are cannot deliver appropriate architectures. Here, we present the fabrication of arrays of praseodymium color centers in YAG substrates, using a deterministic source of single laser-cooled Pr$^+$ ions. The beam of single Pr$^+$ ions is extracted from a Paul trap and focused down to 30(9) nm. Using a confocal microscope we determine a conversion yield into active color centers up to 50% and realizing a placement accuracy of better than 50 nm.<br/>