Two Quantum Circuit Examples

We are now ready to create some more complex quantum circuits after learning the basic gates. In this chapter, we will use two examples to practice the skills and emphasize some important and confusing aspects of quantum circuits and their corresponding matrix equations. We will see again the importance of identifying the most and least significant qubits in a circuit. It is also important to make sure if big-endian or little-endian is used. We will also implement the quantum circuits on IBM-Q.