Simplified optical quantum-information processing via weak cross-Kerr nonlinearities

被引：86

作者：

Guo, Qi ^{[1
]}

Bai, Juan ^{[1
]}

Cheng, Liu-Yong ^{[1
]}

Shao, Xiao-Qiang ^{[2
]}

Wang, Hong-Fu ^{[1
]}

Zhang, Shou ^{[1
]}

机构：

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

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

来源：

PHYSICAL REVIEW A | 2011年 / 83卷 / 05期

基金：

中国国家自然科学基金;

关键词：

ENTANGLEMENT; COMPUTATION; SCHEME;

D O I：

10.1103/PhysRevA.83.054303

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a simplified parity meter for photonic qubits with cross-Kerr nonlinearities, homodyne measurement, and some optical elements. Our scheme has lower error probability than the protocol proposed in Nemoto and Munro [Phys. Rev. Lett. 93, 250502 (2004)]. Based on the present parity meter, we achieve cluster-state preparation, a complete Bell-state analyzer, and quantum teleportation. All of these schemes are nearly deterministic in the regime with little noise and include less optical elements, which makes our schemes more meaningful for large-scale quantum computing.

引用

页数：4

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