Quantum Computing, Quantum Circuits, Quantum Computer, Quantum.
on a group of qubits (the target qubits), if another set of qubits (the control qubits), have a particular value, usually 1. Conditional Z Gate/ CZ gate/ Conditional Phase shift: Try to derive CZ gate from Z gate above, take any bit a control bit CZ (|x⟩|y⟩) → (−1)^(x*y) |x⟩|y⟩ Conditional NOT