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How to improve the key distribution efficiency is key technique in quantum key distribution. An efficient quantum key distribution (QKD) protocol based on Orbital Angular Momentum (OAM) states in the d-dimension Hilbert space is presented in this paper. In the protocol, each photon carries log2d bits information, and the key distribution efficiency is improved greatly. In addition, the numerical simulation...
To investigate the expression of HLA gene mRNA in peripheral blood mononuclear cell (PBMC) of patients with gastric cancer. HLA-A, -B, -DP, -DR, -G mRNA expression levels in 43 patients and 22 healthy individuals were performed by reverse transcriptase polymerase chain reaction(RT-PCR) and real-time RT-PCR. The expressions of HLA-A, -B,-G mRNA in gastric cancer group were significantly lower than...
The quantum multi-user detection technique with quantum detection under quantum multiple-access channel is a promising field in communications, it has promised an efficient solution to the NP hard problem in conventional optimal solution of multi-user detection. In this paper, a solution of multi-user detection in multi-access quantum channel based on the quantum square-root measurement is proposed,...
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