Long-lived quantum speedup based on plasmonic hot spot systems

摘要: Long-lived quantum speedup serves as a fundamental component for algorithms. The walk is identified an ideal scheme to realize the long-lived speedup. However, one finds that duration of very short in real systems implementing walk. can last only dozens femtoseconds photosynthetic light-harvesting system, which was regarded best candidate information processing. Here, we construct plasmonic system with two-level molecules embodied hot spots one-dimensional nanoparticle chains coherent and incoherent coupling parameters are obtained by means Green's tensor technique. Our results reveal our exceed 500 fs under strong conditions, several times larger than system. proposal presents competitive speedup, beneficial