The improved quantum switching mechanism based on contention

Quantum switching architecture is one of the promising schemes for transmitting quantum data to its destination. In this paper, we propose an improved quantum switching mechanism for solving the output contention problem. Firstly we analyze the impropriety of Tsai and Kuo’s quantum switching scheme for multicast service. Secondly an improved quantum switching scheme is presented for completing the switching task with output contention. Lastly an illustrative example is given to evaluate our method and the result shows that the present improved mechanism can ensure the data reliable in transmitting and is scalable for quantum switching with output contention.