2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/229601Precise control over the position of a single quantum object is important for many experiments in quantum science and nanotechnology. We report on a technique for high-accuracy positioning of individual diamond nanocrystals. The positioning is done with a home-built nanomanipulator under real-time scanning electron imaging, yielding an accuracy of a few nanometers. This technique is applied to pick up, move and position a single NV defect center contained in a diamond nanocrystal. We verify that the unique optical and spin properties of the NV center are conserved by the positioning process.3 pages, 3 figures; high-resolution version available at http://www.ns.tudelft.nl/qtQuantum Physicstext