Quantum computers operate on quantum bits, also called qubits. quantities that can have values 0 and 1. That is what quantum computing is all about: Making use of quantum physics to build conceptually different computers. Quantum Computing is the field that integrates quantum mechanical phenomena into a computing device. Different models of quantum computing exist — adiabatic quantum computers, Turing quantum computers, one-way quantum computers, etc. Difference between Traditional and Quantum Computers. Computers as you know them operate on bits, i.e. Quantum computers use properties like superposition and entanglement to perform computation.