In the most popular - gated model of quantum processing, qubits are processed using a notation similar to classical electronic logic gates. The state of each qubit is usually initialized with the value |0>, and then passes through a series of quantum gates that interact with it by performing certain operations. Finally, a measurement is made of the cubit's value, which at this stage takes the value of 0 or 1. However, the measurement operation causes all quantum properties of the circuit to be lost.
