Raman-excited spin coherences were experimentally observed in nitrogen-vacancy (N-V) diamond color centers by means of nondegenerate four-wave mixing and electromagnetically induced transparency. The maximal absorption suppression was found to be 17%, which corresponds to 70% of what is possible given the random geometric orientation of the N-V center in diamond. In the context of quantum computing in solids, this level of transparency represents efficient preparation of quantum bits, as well as the ability to perform arbitrary single-quantum-bit rotations.
© 2001 Optical Society of America
P. R. Hemmer, A. V. Turukhin, M. S. Shahriar, and J. A. Musser, "Raman-excited spin coherences in nitrogen-vacancy color centers in diamond," Opt. Lett. 26, 361-363 (2001)