Zhi-Yuan Li(李志远), Hai-Feng Yu(于海峰), Xin-Sheng Tan(谭新生), Shi-Ping Zhao(赵士平), Yang Yu(于扬)
Chin. Phys. B 2019, 28 (9): 098505
We investigate the XY control and manipulation of the superconducting qubit state using direct digital synthesis (DDS) for the microwave pulse signal generation. The decoherence time, gate fidelity, and other qubit properties are measured and carefully characterized, and compared with the results ob...

Ge-Hai Du(杜舸海), Hong-Wei Li(李宏伟), Yang Wang(汪洋), Wan-Su Bao(鲍皖苏)
Chin. Phys. B 2019, 28 (9): 090301
The unconditional security of quantum key distribution (QKD) can be guaranteed by the nature of quantum physics. Compared with the traditional two-dimensional BB84 QKD protocol, high-dimensional quantum key distribution (HD-QKD) can be applied to generate much more secret key. Nonetheless, practical...

Munsif Jan, Xiao-Ye Xu(许小冶), Qin-Qin Wang(王琴琴), Zhe Chen(陈哲), Yong-Jian Han(韩永建), Chuan-Feng Li(李传锋), Guang-Can Guo(郭光灿)
Chin. Phys. B 2019, 28 (9): 090303
Preserving non-Markovianity and quantum entanglement from decoherence effect is of theoretical and practical significance in the quantum information processing technologies. In this context, we study a system S that is initially correlated with an ancilla A, which interacts with the environment E vi...