Noise-resilient quantum evolution steered by dynamical decoupling
文献类型：期刊论文
| 作者 | Liu, GQ ; Po, HC ; Du, JF ; Liu, RB ; Pan, XY |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2013 |
| 卷号 | 4 |
| ISSN号 | 2041-1723 |
| 通讯作者 | Liu, RB (reprint author), Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China. |
| 中文摘要 | Realistic quantum computing is subject to noise. Therefore, an important frontier in quantum computing is to implement noise-resilient quantum control over qubits. At the same time, dynamical decoupling can protect the coherence of qubits. Here we demonstrate non-trivial quantum evolution steered by dynamical decoupling control, which simultaneously suppresses noise effects. We design and implement a self-protected controlled-NOT gate on the electron spin of a nitrogen-vacancy centre and a nearby carbon-13 nuclear spin in diamond at room temperature, by employing an engineered dynamical decoupling control on the electron spin. Final state fidelity of 0.91(1) is observed in preparation of a Bell state using the gate. At the same time, the qubit coherence time is elongated at least 30 fold. The design scheme does not require the dynamical decoupling control to commute with the qubit interaction and therefore works for general qubit systems. This work marks a step towards implementing realistic quantum computing systems. |
| 资助信息 | National Basic Research Program of China (973 Program) [2009CB929103, 2013CB921800]; National Natural Science Foundation of China [10974251, 11028510, 11227901, 1161160553, 91021005]; Hong Kong Research Grants Council-National Natural Science Foundation of China Joint Project [N_CUHK403/11]; Chinese University of Hong Kong Focused Investments Scheme; Hong Kong Research Grants Council-Collaborative Research Fund Project [HKU8/CRF/11G] |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57253]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu, GQ,Po, HC,Du, JF,et al. Noise-resilient quantum evolution steered by dynamical decoupling[J]. NATURE COMMUNICATIONS,2013,4. |
| APA | Liu, GQ,Po, HC,Du, JF,Liu, RB,&Pan, XY.(2013).Noise-resilient quantum evolution steered by dynamical decoupling.NATURE COMMUNICATIONS,4. |
| MLA | Liu, GQ,et al."Noise-resilient quantum evolution steered by dynamical decoupling".NATURE COMMUNICATIONS 4(2013). |
入库方式： OAI收割
来源：物理研究所
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