量子行走到经典行走的连续调控  

Continuous regulation from quantum walk to classical walk

作　　者：陈斌[1] 陈天豪 张融 CHEN Bin;CHEN Tianhao;ZHANG Rong(College of Electronic and Optical Engineering,Nanjing University of Posts and Telecommunication,Nanjing 210023,China;Bell Honors School,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)

机构地区：[1]南京邮电大学电子与光学工程学院,江苏南京210023 [2]南京邮电大学贝尔英才学院,江苏南京210023

出　　处：《量子电子学报》2023年第6期917-923,共7页Chinese Journal of Quantum Electronics

基　　金：国家自然科学青年科学基金(11705096)。

摘　　要：为深入认识微观粒子的波粒二象性,探索波态和粒子态之间的转变并制备多路径波态和粒子态的共存状态,提出了通过引入量子控制实现量子行走中波态和粒子态之间的连续调控的理论方案,并分别计算了量子行走的位置分布及方差随着辅助比特系数的变化情况。计算结果表明量子调控使得行走者不仅可以处于粒子和波的混合态,还能处于相干叠加态。波态和粒子态之间的连续调控通过相干和混合方式的位置方差展示,,并且给出了混合态和相干态两种调控方式的差异。量子行走为深入研究微观粒子的波粒二象性提供了一个实用的平台。In order to deeply understand the wave particle duality of microscopic particles,explore the transitions between wave state and particle state,and prepare the coexistence states of multi-path wave state and particle state,a theoretical scheme to realize the continuous transition from wave-to particle-state in quantum walks by introducing quantum control is proposed.The variation of the position distribution and variance of quantum walks with auxiliary bit coefficients is calculated respectively.It is shown that quantum control can make the walker not only in the mixed state of wave and particle,but also in the coherent superposition state.The continuous morphing from wave state to particle state is displayed by the position variance in both the coherent way and the mixed way,and the difference between the mixed state control and the coherent state control is also demonstrated.Quantum walks provide a useful platform for in-depth study on the wave-particle duality of microscopic particles.

关 键 词：量子光学 量子行走 量子调控 相干叠加 

分 类 号：O431.2[机械工程—光学工程]