Implementation of Dynamically Corrected Gates on a Single Electron Spin in Diamond

被引：57

作者：

Rong, Xing ^{[1
,2
,3
]}

Geng, Jianpei ^{[1
,2
]}

Wang, Zixiang ^{[1
,2
]}

Zhang, Qi ^{[1
,2
]}

Ju, Chenyong ^{[1
,2
,3
]}

Shi, Fazhan ^{[1
,2
,3
]}

Duan, Chang-Kui ^{[1
,2
,3
]}

Du, Jiangfeng ^{[1
,2
,3
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China

[2] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China

[3] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 05期

基金：

中国国家自然科学基金;

关键词：

SOLID-STATE SPIN; QUANTUM COMPUTATION; DECOHERENCE; COHERENCE; SILICON; COMPUTER; MEMORY; CODES; QUBIT;

D O I：

10.1103/PhysRevLett.112.050503

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Precise control of an open quantum system is critical to quantum information processing but is challenging due to inevitable interactions between the quantum system and the environment. We demonstrated experimentally a type of dynamically corrected gates using only bounded-strength pulses on the nitrogen-vacancy centers in diamond. The infidelity of quantum gates caused by a nuclear-spin bath is reduced from being the second order to the sixth order of the noise-to-control-field ratio, which offers greater efficiency in reducing infidelity. The quantum gates have been protected to the limit essentially set by the spin-lattice relaxation time T-1. Our work marks an important step towards fault-tolerant quantum computation in realistic systems.

引用

页数：5

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