Two-qubit and three-qubit controlled gates with cross-Kerr nonlinearity

被引：7

作者：

Zhao Rui-Tong ^{[1
]}

Guo Qi ^{[2
]}

Cheng Liu-Yong ^{[2
]}

Sun Li-Li ^{[2
]}

Wang Hong-Fu ^{[1
]}

Zhang Shou ^{[1
]}

机构：

[1] Yanbian Univ, Dept Phys, Coll Sci, Yanji 133002, Peoples R China

[2] Harbin Inst Technol, Dept Phys, Ctr Condensed Matter Sci & Technol, Harbin 150001, Peoples R China

来源：

CHINESE PHYSICS B | 2013年 / 22卷 / 03期

基金：

中国国家自然科学基金;

关键词：

quantum controlled gates; cross-Kerr nonlinearity; quantum nondemolition detector; QUANTUM; SCHEME;

D O I：

10.1088/1674-1056/22/3/030313

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Schemes for two-qubit and three-qubit controlled gates based on cross-Kerr nonlinearity are proposed in this paper. The probability of the success of these gates can be increased by quantum nondemolition detectors, which are used to judge which paths the signal photons pass through. These schemes are almost deterministic and require no ancilla photon. The advantages of these gates over the existing ones include less resource consumption and a higher probability of success, which make our schemes more feasible with current technology.

引用

页数：6

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