Table 1 The relation between the coherence ratio and the chain length n for the constructed control gate.

From: A Rout to Protect Quantum Gates constructed via quantum walks from Noises

n

\({\bf{T}}{\bf{r}}({\bar{{\boldsymbol{\rho }}}}^{{\bf{2}}})\)

2

0.5230

8

0.6680

10

0.7149

16

0.8021

20

0.8422

  1. The spectrum of the noise is constant.
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