Efficient Generation of Many-Body Entangled States by Multilevel Oscillations
文献类型：期刊论文
| 作者 | Xu, Peng; Yi, Su1,3,4 ; Zhang, Wenxian
|
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2019 |
| 卷号 | 123期号:7页码:73001 |
| 关键词 | BOSE SPIN-1 NOISE |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/PhysRevLett.123.073001 |
| 英文摘要 | We generate high-fidelity massively entangled states in an antiferromagnetic spin-1 Bose-Einstein condensate (BEC) by utilizing multilevel oscillations. Combining the multilevel oscillations with additional adiabatic drives, we greatly shorten the necessary evolution time and relax the requirement on the control accuracy of quadratic Zeeman splitting, from microgauss to milligauss, for a Na-23 spinor BEC. The achieved high fidelities over 96% show that two kinds of massively entangled states, the many-body singlet state and the twin-Fock state, are almost perfectly generated. The generalized spin squeezing parameter drops to a value far below the standard quantum limit even with the presence of atom number fluctuations and stray magnetic fields, illustrating the robustness of our protocol under real experimental conditions. The generated many-body entangled states can be employed to achieve the Heisenberg-limit quantum precision measurement and to attack nonclassical problems in quantum information science. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/26967]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100049, Peoples R China 3.Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China 4.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Peng,Yi, Su,Zhang, Wenxian. Efficient Generation of Many-Body Entangled States by Multilevel Oscillations[J]. PHYSICAL REVIEW LETTERS,2019,123(7):73001. |
| APA | Xu, Peng,Yi, Su,&Zhang, Wenxian.(2019).Efficient Generation of Many-Body Entangled States by Multilevel Oscillations.PHYSICAL REVIEW LETTERS,123(7),73001. |
| MLA | Xu, Peng,et al."Efficient Generation of Many-Body Entangled States by Multilevel Oscillations".PHYSICAL REVIEW LETTERS 123.7(2019):73001. |
入库方式： OAI收割
来源：理论物理研究所
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