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题名: Dark-like states for the multi-qubit and multi-photon Rabi models
作者: Peng, J ;  Zheng, CX ;  Guo, GJ ;  Guo, XY ;  Zhang, X ;  Deng, CS ;  Ju, GX ;  Ren, ZZ ;  Lamata, L ;  Solano, E
刊名: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
出版日期: 2017
卷号: 50, 期号:17, 页码:174003
关键词: dark-like states ;  multi-qubit and multi-photon quantum Rabi models ;  exceptional solution
学科分类: Physics
DOI: http://dx.doi.org/10.1088/1751-8121/aa651d
通讯作者: Peng, J (reprint author), Xiangtan Univ, Lab Quantum Engn & Micronano Energy Technol, Xiangtan 411105, Hunan, Peoples R China. ;  Peng, J (reprint author), Xiangtan Univ, Sch Phys & Optoelect, Xiangtan 411105, Hunan, Peoples R China.
文章类型: Article
英文摘要: There are special solutions, the well-known dark states, to the even-qubit Dicke models, which are the products of two-qubit singlets and a Fock state, where the qubits are decoupled from the photon field. These spin singlets can be used to store quantum correlations since they preserve entanglement even under dissipation, driving and dipole-dipole interactions. One of the features for these 'dark states' is that their eigenenergies are independent of the qubit-photon coupling strength. Here we have obtained a novel kind of exceptional solution-'dark-like states' for the multi-qubit and multi-photon Rabi models, whose eigenenergies are also constant in the whole coupling regime. But unlike the 'dark states', the qubits and photon field are coupled. Furthermore, the photon numbers are bounded from above commonly at 1, which is different from the one-qubit case. The existence conditions of these exceptional solutions are simpler than the exact isolated solutions, and may be fine tuned in experiments. While solutions to the single-qubit and multi-photon Rabi model exist only if the photon number M <= 2 and the coupling strength is below a certain critical value, the dark-like eigenstates for the multi-qubit and multi-photon Rabi model exist regardless of these constraints. In view of these properties of the dark-like states, they may find similar applications as ` dark states' in quantum information.
类目[WOS]: Physics, Multidisciplinary ;  Physics, Mathematical
关键词[WOS]: CIRCUIT QUANTUM ELECTRODYNAMICS ;  JAYNES-CUMMINGS MODEL ;  SUPERCONDUCTING CIRCUITS ;  SPACE QUANTIZATION ;  DICKE MODELS ;  2-PHOTON
项目资助者: National Natural Science Foundation of China [11547228, 11535004, 11604240, 11204263, 11035001, 11404274, 10735010, 10975072, 11375086, 11120101005, 11175085, 11235001, 11505292] ;  Scientific Research Fund of Hunan Provincial Education Department [16B250, 16C1531, 16C1528] ;  973 National Major State Basic Research and Development of China [2010CB327803, 2013CB834400] ;  Program for Changjiang Scholars and Innovative Research Team in University [IRT13093] ;  Spanish MINECO/FEDER [FIS2015-69983-P] ;  UPV/EHU [UFI 11/55] ;  Basque Government [IT986-16] ;  Ramon y Cajal Grant [RYC-2012-11391]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/22073
Appears in Collections:理论物理所2017年知识产出_期刊论文

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Recommended Citation:
Peng, J,Zheng, CX,Guo, GJ,et al. Dark-like states for the multi-qubit and multi-photon Rabi models[J]. JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL,2017,50(17):174003.
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