Information transmission in spin chain of one-dimensional quantum dot array

The quantum dot array consisting of a uniform and orderly quantum dot based on one-dimensional linear real space lattice of tight-binding model was investigated, and the evolution operator was used to transfer a single qubit in a spin chain of quantum dot array. That is to say, the information of one-qubit is transferred to the terminal state from the multi-particle state 1 sub(1)0 sub(2)0 sub(3) ... 0 sub(N-1)0 sub(N)[right angle bracket] of initiating terminal of the quantum dot array 0 sub(1)0 sub(2)0 sub(3) ... 0 sub(N-1)0 sub(N)[right angle bracket] with the evolution operator exp (ProQuest: Formulae and/or non-USASCII text omitted). The probability was calculated. The results show that it is possible that the information of one-qubit is transferred from the first qubit of initiating terminal of the multi-particle state 1 sub(1)0 sub(2)0 sub(3) ... 0 sub(N-1)0 sub(N)[right angle bracket] to the N qubit of the end of the terminal state 0 sub(1)0 sub(2)0 sub(3) ... 0 sub(N-1)1 sub(N) [right angle bracket].