Fig. 3: A unitary process with nodes A and B, root node P (in the global past) and leaf node F (in the global future). | Nature Communications

Fig. 3: A unitary process with nodes A and B, root node P (in the global past) and leaf node F (in the global future).

From: Cyclic quantum causal models

Fig. 3

Here with Pout = QS and \({F}^{{\rm{in}}}=Q^{\prime} S^{\prime}\); the quantum SWITCH is an example of such a process.

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