量子电子学报 ›› 2023, Vol. 40 ›› Issue (6): 917-923.doi: 10.3969/j.issn.1007-5461.2023.06.011

• 量子光学 • 上一篇    下一篇

量子行走到经典行走的连续调控

陈 斌 1#, 陈天豪 2#, 张 融 1*   

  1. ( 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 )
  • 收稿日期:2022-01-22 修回日期:2022-04-19 出版日期:2023-11-28 发布日期:2023-11-28
  • 通讯作者: zhangr_nj@163.com E-mail:zhangr_nj@163.com
  • 作者简介:陈 斌 ( 1996 - ), 江苏泰州人, 研究生, 主要从事量子通信和量子计算方面的研究。E-mail: chenb15321101@163.com; 陈天豪 ( 2000 - ), 江苏南京人, 研究生, 主要从事量子信息方面的研究。E-mail: q19010310@njupt.edu.cn
  • 基金资助:
    国家自然科学青年科学基金 (11705096)

Continuous regulation from quantum walk to classical walk

CHEN Bin1# , CHEN Tianhao2# , ZHANG Rong 1*   

  1. ( 1 College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunication, Nanjing 210023, China; 2 Bell Honors School, Nanjing University of Posts and Telecommunications, Nanjing 210023, China )
  • Received:2022-01-22 Revised:2022-04-19 Published:2023-11-28 Online:2023-11-28

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。

关键词: 量子光学, 量子行走, 量子调控, 相干叠加

Abstract: 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 particlestate 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.

Key words: quantum optics, quantum walks, quantum control, coherent superposition

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