• Corpus ID: 248512611

Restart expedites quantum walk hitting times

@inproceedings{Yin2022RestartEQ,
  title={Restart expedites quantum walk hitting times},
  author={Ruoyu Yin and Eli Barkai},
  year={2022}
}
Classical first-passage times under restart are used in a wide variety of models, yet the quantum version of the problem still misses key concepts. We study the quantum first detected passage time under restart protocol using a monitored quantum walk. The restart strategy eliminates the problem of dark states, i.e. cases where the particle is not detected at all, while maintaining the ballistic propagation which is important for fast search. We find profound effects of quantum oscillations on the… 
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