Coherent oscillations between any two levels from four nuclear spin states of I = 3/2 have been demonstrated in a nanometre-scale NMR. semiconductor device, where nuclear spins are all-electrically controlled. Using this device, we discuss quantum logic operations on two fictitious qubits of the I = 3/2 system, and propose a quantum state tomography scheme based on the measurement of longitudinal magnetization, Mz.
- Nanoscale device
- Nuclear spin resonance
- Nuclear spins
- Quantum information processing