Quantum Computing, Quantum Gate, Qiskit.
unchanged; It flips the 2nd qubit if 1st qubit is |0⟩ otherwise 2nd qubit is unchanged; Checking the result using IBM Quantum circuit composer: Composer1 : Input |00⟩ -> output |10⟩ Composer2 : Input |10⟩ -> output |00⟩ Composer3 : Input |01⟩ -> output |01⟩ Composer4 : Input |00⟩ -> output |11⟩