16-qubit IBM universal quantum computer can be fully entangled

被引：95
作者：
Wang, Yuanhao [1 ]
Li, Ying [2 ]
Yin, Zhang-qi [1 ]
Zeng, Bei [3 ,4 ,5 ]
机构：
[1] Tsinghua Univ, Ctr Quantum Informat, Inst Interdisciplinary Informat Sci, Beijing 100084, Peoples R China
[2] China Acad Engn Phys, Grad Sch, Beijing 100193, Peoples R China
[3] Univ Guelph, Dept Math & Stat, Guelph, ON N1G 2W1, Canada
[4] Univ Waterloo, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada
[5] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada
来源：
NPJ QUANTUM INFORMATION | 2018年 / 4卷
基金：
加拿大自然科学与工程研究理事会; 中国国家自然科学基金;
关键词：
SEPARABILITY; STATES;
D O I：
10.1038/s41534-018-0095-x
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Entanglement is an important evidence that a quantum device can potentially solve problems intractable for classical computers. In this paper, we prepare connected graph states involving 8 to 16 qubits on ibmqx5, a 16-qubit superconducting quantum processor accessible via IBM cloud, using low-depth circuits. We demonstrate that the prepared state is fully entangled, i.e., the state is inseparable with respect to any fixed partition.
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页数：6
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