Quantum, Qiskit, Quantum Mechanics, Python, Programming.
ancillary qubit To create a barrier from 001110 to 001111, we can apply a series of Toffoli and a controlled phase gate to apply the potential propagator on the 3rd, 4th, and 5th qubits. Next, we must determine how to represent the kinetic propagator, exp(-iTt), where T=p²/m. We can write p as