High-coherent oscillations in IR spectra of macroporous silicon with nanocoatings

Abstract

IR light absorption oscillations in 2D macroporous silicon with CdTe, ZnO and CdS surface nanocrystals, microporous and SiO2 layers were compared taking into account the electro-optical Wannier–Stark effect. We proposed a high-coherent optical quantum computer based on ZnO nanoparticles on macroporous silicon surface with the broadening parameter of the Wannier–Stark steps of 10–3 and the IR oscillation coherence of 0.25–0.4% at room temperature. This value is much less than the coherence of cold atoms (5%) and diamond crystal with the nitrogen impurity (10–17%). A logical qubit of this quantum computer is the presence/absence of the infinite resonance scattering of oscillated electron by the Wannier levels in the electric field at the silicon matrix – nanocoating boundary. The scattering amplitudes are controlled and measured at room temperature by using the resonant maxima of IR absorption.

Keywords

• macroporous silicon with nanocoatings
• infinite resonance scattering
• optical quantum computer