Assertion: controlled gate | /r/CapableOf | act on 2 qubits
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Source sentences:
text: For example, the controlled NOT gate (or CNOT or cX) acts on 2 qubits, and performs the NOT operation on the second qubit only when the first qubit is | 1
text: Controlled gates act on 2 or more qubits, where one or more qubits act as a control for some operation.