English title

We propose a novel two state and all-optical controllable switch using DIT, Kerr effect and interaction between quantum dots (QD) and quantum electrodynamics cavity (CQED). The two state and all-optical controllable switch is coupled to photonic waveguide from a rapid nonlinear environment (photonic crystal) and CQED. We consider the nano-crystal are doped to crystal photonic cavity as a 4-level atomic system then design the proposed all-optical switch with quantumatic methods. We wright Hamiltonian of the system and realize the dynamic equation then we show the optical switching operation by calculating the transition probability for two waveguides with simulations in MATLAB.

In this paper by choosing the proper values for basic parameters an improved all-optical switch were obtained for example the switching speed is increased 3 times with first control field, 7 times with second control field rather than previous designs.