Realizing quantum controlled phase-flip gate through quantum dot in silicon slow-light photonic crystal waveguide

摘要

We propose a scheme to realize controlled phase gate between two singlephotons through a single quantum dot in slow-light silicon photonic crystalwaveguide. Enhanced Purcell factor and beta factor lead to high gate fidelityover broadband frequencies compared to cavity-assisted system. The excellentphysical integration of this silicon photonic crystal waveguide system providestremendous potential for large-scale quantum information processing.