Vision of a future quantum computer with chips made of diamond and graphene. Credit: Christoph Hohmann, NIM
Nitrogen-vacancy centers in diamonds could be used to construct vital components for quantum computers. But hitherto it has been impossible to read optically written information from such systems electronically. Using a graphene layer, a team of scientists headed by Professor Alexander Holleitner of the Technische Universität München has now implemented just such a read unit.
Ideally, diamonds consist of pure carbon. But natural diamonds always contain defects. The most researched defects are nitrogen-vacancy centers comprising a nitrogen atom and a vacancy. These might serve as highly sensitive sensors or as register components for quantum computers. However, until now it has not been possible to extract the optically stored information electronically.
Read more at: http://phys.org/news/2014-12-quantum-graphene-layer-optical-nanodiamonds.html#jCp