Scientists from the Kavli Institute of Nanoscience have brought two atomic nuclei in synthetic diamond into a quantum entangled state. They published their findings on 14 October 2012 online in Nature Physics.
Demonstration of entanglement-by-measurement of solid state qubits
W. Pfaff, T.H. Taminiau, L. Robledo, H. Bernien, M.L. Markham, D. J. Twitchen, R. Hanson
Nature Physics 9, 29–33 (2013)
Researchers from the Kavli Institute of Nanoscience (Delft University of Technology) and the FOM Foundation have devised a new method for reading out the electron state in a carbon nanotube. They did this by 'stamping’ an individual nanotube on a chip. Then the electron state can be read out, as the nanotube remains very clean and controllable. Electrons in such a nanotube can acquire special quantum characteristics which make these structures interesting for future quantum computers. The readout of the electron states is a crucial step in this.