Optimized dynamical decoupling sequences in protecting two-qubit states
文献类型：期刊论文
| 作者 | Pan, Yu1,2; Xi, Zai-Rong2; Gong, Jiangbin1,3,4 |
| 刊名 | JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
 |
| 出版日期 | 2011-09-14 |
| 卷号 | 44期号:17页码:8 |
| ISSN号 | 0953-4075 |
| DOI | 10.1088/0953-4075/44/17/175501 |
| 英文摘要 | Aperiodic dynamical decoupling (DD) sequences of p pulses are of great interest to decoherence control and have been recently extended from single-qubit to two-qubit systems. If the environmental noise power spectrum is made available, then one may further optimize aperiodic DD sequences to reach higher efficiency of decoherence suppression than known universal schemes. This possibility is investigated in this work for the protection of two-qubit states, using an exactly solvable pure dephasing model including both local and nonlocal noise. The performance of optimized DD sequences in protecting two-qubit states is compared with that achieved by nested Uhrig's DD (nested-UDD) sequences, for several different types of noise spectrum. Except for the cases with noise spectrum decaying slowly in the high-frequency regime, optimized DD sequences with tens of control pulses can perform orders of magnitude better than that of nested-UDD. A two-qubit system with highly unbalanced local noise is also examined to shed more light on a recent experiment. Possible experiments that may be motivated by this work are discussed. |
| 资助项目 | Faculty of Science, National University Singapore ; NUS 'YIA'[R-144-000-195-101] ; National Nature Science Foundation of China[61074051] ; National Nature Science Foundation of China[60821091] |
| WOS研究方向 | Optics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000294891500021 |
| 出版者 | IOP PUBLISHING LTD |
| 源URL | [http://ir.amss.ac.cn/handle/2S8OKBNM/12373]  |
| 专题 | 中国科学院数学与系统科学研究院 |
| 通讯作者 | Pan, Yu |
| 作者单位 | 1.Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore 2.Chinese Acad Sci, Key Lab Syst & Control, Inst Syst Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China 3.Natl Univ Singapore, Ctr Computat Sci & Engn, Singapore 117542, Singapore 4.NUS Grad Sch Integrat Sci & Engn, Singapore 117597, Singapore |
| 推荐引用方式 GB/T 7714 | Pan, Yu,Xi, Zai-Rong,Gong, Jiangbin. Optimized dynamical decoupling sequences in protecting two-qubit states[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,2011,44(17):8. |
| APA | Pan, Yu,Xi, Zai-Rong,&Gong, Jiangbin.(2011).Optimized dynamical decoupling sequences in protecting two-qubit states.JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,44(17),8. |
| MLA | Pan, Yu,et al."Optimized dynamical decoupling sequences in protecting two-qubit states".JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 44.17(2011):8. |
入库方式： OAI收割
来源：数学与系统科学研究院
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