Physical realization of controlled quantum gates

In this thesis, we briefly survey the quantum computers history and the main parts of each computer, also mention some quantum computation's rule. Then, several illustration of some quantum gates by solving the time-dependent Schrödinger equation for several desired Hamiltonians and by controlling the parameters of time-dependent probability equation. We have tried to show the physical realization of quantum gates theoretically. In addition the simulations of the systems and graphs is performed by using