Investigation for the possible crystal NMR quantum computing device with BaLiF3

The Li-7 and F-19 NMR have been performed in the single crystal of the lithium fluoride, BaLiF3 with a cubic structure in order to examine the basic requirements for crystal NMR quantum computing devices. The angular dependences of the NMR line widths were explained by the lattice-sum of nuclear dipole fields. We find that magic angles are quite effective in this crystal structure to diminish the nuclear dipole fields from the nearest neighbor sites, enabling us to treat the nuclei as "isolated". We propose using this feature to create low dimensional nuclear spin networks in crystals. (C) 2001 Elsevier Science B.V. All rights reserved.