Fig. 3: Illustration of the set \({{\mathsf{G}}}^{(n)}({\mathbb{G}})\).
From: On the fundamental resource for exponential advantage in quantum channel learning
Each number in the box labels a qubit. Gj denotes the j-th element of \({\mathbb{G}}\), and g(j) is an element of \({{\mathsf{G}}}^{(n)}({\mathbb{G}})\) that applies Gj to qubit j and the identity elsewhere.
