  We propose a way to make arrays of optical frequency dipole-force microtraps
for cold atoms above a dielectric substrate. Traps are nodes in the evanescent
wave fields above an optical waveguide resulting from interference of different
waveguide modes. The traps have features sought in developing neutral atom
based architectures for quantum computing: ~ 1 mW of laser power yields very
tight traps 150 nm above a waveguide with trap vibrational frequencies ~ 1 MHz
and vibrational ground state sizes ~ 10 nm. The arrays are scalable and allow
addressing of individual sites for quantum logic operations.
