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6 papers · 2 filters
Linear optical demonstration of quantum speed-up with a single qudit
Xiang Zhan, Jian Li, Hao Qin +2
Though quantum algorithm acts as an important role in quantum computation science, not only for providing a great vision for solving classically unsolvable problems, but also due t…
Cryptanalysis and improvement of the quantum private comparison protocol based on Bell entangled states
Wen-Jie Liu, Chao Liu, Yu Zheng +1
Recently, Liu et al. [Commun. Theor. Phys. 57, 583, 2012] proposed a quantum private comparison protocol based on entanglement swapping of Bell states, which aims to securely compa…
Perfect state transfer and efficient quantum routing: a discrete-time quantum walk approach
Xiang Zhan, Hao Qin, Zhi-hao Bian +2
We show a perfect state transfer of an arbitrary unknown two-qubit state can be achieved via a discrete-time quantum walk with various settings of coin flippings, and extend this m…
Interference-induced enhancement of field entanglement in a microwave-driven V-type single-atom laser
Wen-Xing Yang, Ai-Xi Chen, Ting-Ting Zha +2
We investigate the generation and the evolution of two-mode continuous-variable (CV) entanglement from system of a microwave-driven V-type atom in a quantum beat laser. By taking i…
A one-dimensional quantum walk with multiple-rotation on the coin
Peng Xue, Rong Zhang, Hao Qin +3
We introduce and analyze a one-dimensional quantum walk with two time-independent rotations on the coin. We study the influence on the property of quantum walk due to the second ro…
Trapping photons on the line: controllable dynamics of a quantum walk
P. Xue, H. Qin, B. Tang
We demonstrate a coined quantum walk over ten steps in a one-dimensional network of linear optical elements. By applying single-point phase defects, the translational symmetry of a…