Quantum Gates for Electronics Engineers

The design of a solid-state quantum processor is nowadays a hot research topic in microelec-tronics. Like the logic gates in a classical processor, quantum gates serve as the fundamental building blocks for quantum processors. Main goal of the present paper is to deduce the matrix of the main one- and two-qubits quantum gates from the Schrödinger equation. The mathemati-cal formalism is kept as comfortable as possible for electronics engineers. The paper does not cover topics as dissipations, state density, coherence, and state purity. In a similar manner, the paper also deals with the quantum nature of a quantum processor by leveraging on the concept of finite state machine, which is a background notion for any electronics engineer.