Nonlinear and non-CP gates for Bloch vector amplification
Nonlinear and non-CP gates for Bloch vector amplification
Abstract Any state r = ( x , y , z ) of a qubit, written in the Pauli basis and initialized in the pure state r = (0, 0, 1), can be prepared by composing three quantum operations: two unitary rotation gates to reach a pure state <?CDATA ${\boldsymbol{r}}={\left({x}^{2}+{y}^{2}+{z}^{2}\right)}^{-\tfrac{1}{2}}\times …