Exploring the quantum critical behaviour in a driven Tavis-Cummings circuit
文献类型：期刊论文
| 作者 | Feng, M.1; Zhong, Y. P.2; Liu, T.1,3; Yan, L. L.1; Yang, W. L.1; Twamley, J.4; Wang, H.2,5 |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2015-05-01 |
| 卷号 | 6 |
| 英文摘要 | Quantum phase transitions play an important role in many-body systems and have been a research focus in conventional condensed-matter physics over the past few decades. Artificial atoms, such as superconducting qubits that can be individually manipulated, provide a new paradigm of realising and exploring quantum phase transitions by engineering an on-chip quantum simulator. Here we demonstrate experimentally the quantum critical behaviour in a highly controllable superconducting circuit, consisting of four qubits coupled to a common resonator mode. By off-resonantly driving the system to renormalize the critical spin-field coupling strength, we have observed a four-qubit nonequilibrium quantum phase transition in a dynamical manner; that is, we sweep the critical coupling strength over time and monitor the four-qubit scaled moments for a signature of a structural change of the system's eigenstates. Our observation of the nonequilibrium quantum phase transition, which is in good agreement with the driven Tavis-Cummings theory under decoherence, offers new experimental approaches towards exploring quantum phase transition-related science, such as scaling behaviours, parity breaking and long-range quantum correlations. |
| WOS标题词 | Science & Technology |
| 类目[WOS] | Multidisciplinary Sciences |
| 研究领域[WOS] | Science & Technology - Other Topics |
| 关键词[WOS] | PHASE-TRANSITION ; SUPERCONDUCTING CIRCUITS ; ULTRACOLD ATOMS ; ELECTRODYNAMICS ; SIMULATION ; SUPERFLUID ; GAS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000355532600003 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/4750]  |
| 专题 | 武汉物理与数学研究所_原子分子光物理研究部 |
| 作者单位 | 1.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 2.Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China 3.Southwest Univ Sci & Technol, Sch Sci, Mianyang 621010, Peoples R China 4.Macquarie Univ, ARC Ctr Engn Quantum Syst, Dept Phys & Astron, Sydney, NSW 2109, Australia 5.Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Feng, M.,Zhong, Y. P.,Liu, T.,et al. Exploring the quantum critical behaviour in a driven Tavis-Cummings circuit[J]. NATURE COMMUNICATIONS,2015,6. |
| APA | Feng, M..,Zhong, Y. P..,Liu, T..,Yan, L. L..,Yang, W. L..,...&Wang, H..(2015).Exploring the quantum critical behaviour in a driven Tavis-Cummings circuit.NATURE COMMUNICATIONS,6. |
| MLA | Feng, M.,et al."Exploring the quantum critical behaviour in a driven Tavis-Cummings circuit".NATURE COMMUNICATIONS 6(2015). |
入库方式： OAI收割
来源：武汉物理与数学研究所
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