We propose a solid-state nuclear-spin quantum computer based on application
of scanning tunneling microscopy (STM) and well-developed silicon technolo
gy. It requires the measurement of tunneling-current modulation caused by t
he Larmor precession of a single electron spin. Our envisioned STM quantum
computer would operate at the high magnetic field (similar to 10 T) and at
low temperature similar to1 K.