Quantum Computing, Quantum Gate, Qiskit.
3rd qubit, since “0 XOR x = x” for any “x”. Fig10: Achieved Classical NOR gate If we look at the 1st input, the 2nd input and the 3rd output as shown in Fig10. The table is exactly the same as the classical NOR gate shown in Fig1. Checking the result using IBM Quantum circuit composer: Composer1 :