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Open Quantum Systems Decoherence Quantum Simulation Quantum State Preparation Representation

Quantum walk on a comb with infinite teeth

arXiv
Authors: Francois David, Thordur Jonsson

Year

2021

Paper ID

63103

Status

Preprint

Abstract Read

~2 min

Abstract Words

99

Citations

N/A

Abstract

We study continuous time quantum random walk on a comb with infinite teeth and show that the return probability to the starting point decays with time t as t-1. We analyse the diffusion along the spine and into the teeth and show that the walk can escape into the teeth with a finite probability and goes to infinity along the spine with a finite probability. The walk along the spine and into the teeth behaves qualitatively as a quantum random walk on a line. This behaviour is quite different from that of classical random walk on the comb.

Why This Paper Matters

  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
  • It adds a 2021 reference point for readers tracking recent quantum research.
  • We study continuous time quantum random walk on a comb with infinite teeth and show that the return probability to the starting point decays with time t as t^-1.

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