A continuous variable quantum deterministic key distribution based on two-mode squeezed states

作者：Gong, Li-Hua^*; Song, Han-Chong; He, Chao-Sheng; Liu, Ye; Zhou, Nan-Run

来源：Physica Scripta, 2014, 89(3): 035101.

DOI：10.1088/0031-8949/89/03/035101

• continuous variable
• quantum key distribution
• deterministic key
• two-mode squeezed state

The distribution of deterministic keys is of significance in personal communications, but the existing continuous variable quantum key distribution protocols can only generate random keys. By exploiting the entanglement properties of two-mode squeezed states, a continuous variable quantum deterministic key distribution (CVQDKD) scheme is presented for handing over the pre-determined key to the intended receiver. The security of the CVQDKD scheme is analyzed in detail from the perspective of information theory. It shows that the scheme can securely and effectively transfer pre-determined keys under ideal conditions. The proposed scheme can resist both the entanglement and beam splitter attacks under a relatively high channel transmission efficiency.

• 出版日期2014-3
• 单位北京邮电大学; 南昌大学