Semi-device-independent randomness certification with partially free random sources using 4->1 quantum random access code
Semi-device-independent randomness certification with partially free random sources using 4->1 quantum random access code
复制标题
使用 4->1 量子随机访问码的部分自由随机源的半设备无关随机性认证
DOI：
10.1007/s11128-021-03382-9
复制
发表时间：
2022
影响因子：
2.5
通讯作者：
Lili Fan
中科院分区：
文献类型：
--
作者：
Xunan Wang;Jiabin Yuan;Yuqian Zhou;Ying Liu;Lili Fan
The semi-device-independent (SDI) quantum random number expansion protocols are based onquantum random access codes (QRACs). These protocols do not require the use of entanglement and are easier to implement than ones which are in device-independent scenario. Since there are only three mutually orthogonal directions in, it is difficult to design an SDI quantum random number expansion protocol for, especially when partially free bits are used as seed. In this paper, we propose the SDI randomness expansion usingQRAC and obtain the corresponding classical bound and quantum bound of the two-dimensional quantum witness. Subsequently, we get the condition to be satisfied by the partially free random sources to generate new randomness. Moreover, we prove the analytic relationship between the certified randomness and the two-dimensional quantum witness violation. Furthermore, the other SDI randomness expansions usingQRACs forcan be studied further by drawing on our methods.
