quantum gate directory
Virtual Distillation gate
Symbol
$B^{(i)}$
Description:
Used in the virtual distillation for error mitigation protocol: https://arxiv.org/abs/2011.07064.
$$B^{(2)} = \begin{bmatrix}1 & 0 & 0 & 0 \\ 0 & \frac{\sqrt{2}}{2} & -\frac{\sqrt{2}}{2} & 0 \\ 0 & \frac{\sqrt{2}}{2} & \frac{\sqrt{2}}{2} & 0 \\ 0 & 0 & 0 & 1 \end{bmatrix}$$
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