Summary

QC has a lot of potential to solve complex problems that even the most powerful supercomputers cannot solve. Now the world has started to build quantum computers and algorithms, yet we are just scratching the surface, and it may take another 5 to 10 years before we start realizing the commercial value.

In this chapter, you learned about QC and some real-life use cases where QC can be advantageous. QC is not the answer to every problem, and it is only applicable to complex calculations where classical computers won't work.

You learned about the key building block of the quantum computer, the qubit, and how multiple qubits work together in a state of superposition and entanglement to solve a complex problem. You learned about the working mechanism of the quantum computer and understood why they are faster than classical computers.

To perform operations on qubits, you learned about QC gates, such as Pauli and Hadamard gates, which apply to single qubits, and...