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题名: Solution of the two-qubit quantum Rabi model and its exceptional eigenstates
作者: Peng, J ;  Ren, ZZ ;  Braak, D ;  Guo, GJ ;  Ju, GX ;  Zhang, X ;  Guo, XY
刊名: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
出版日期: 2014
卷号: 47, 期号:26, 页码:265303
关键词: CAVITY ;  ENTANGLEMENT ;  GENERATION ;  QUBITS ;  STATES
学科分类: Physics
DOI: 10.1088/1751-8113/47/26/265303
通讯作者: Peng, J (reprint author), Nanjing Univ, Key Lab Modern Acoust, Nanjing 210093, Jiangsu, Peoples R China.
部门归属: [Peng, Jie ;  Ren, Zhongzhou ;  Ju, Guoxing ;  Zhang, Xin] Nanjing Univ, Key Lab Modern Acoust, Nanjing 210093, Jiangsu, Peoples R China ;  [Peng, Jie ;  Ren, Zhongzhou ;  Ju, Guoxing ;  Zhang, Xin] Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China ;  [Peng, Jie ;  Ren, Zhongzhou ;  Zhang, Xin] Nanjing Univ, Joint Ctr Nucl Sci & Technol, Nanjing 210093, Jiangsu, Peoples R China ;  [Ren, Zhongzhou] Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China ;  [Ren, Zhongzhou] Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China ;  [Braak, Daniel] Univ Augsburg, Inst Phys, EP VI, D-86135 Augsburg, Germany ;  [Braak, Daniel] Univ Augsburg, Inst Phys, Ctr Elect Correlat & Magnetism, D-86135 Augsburg, Germany ;  [Guo, Guangjie] Xingtai Univ, Dept Phys, Xingtai 054001, Peoples R China ;  [Guo, Xiaoyong] Tianjin Univ Sci & Technol, Sch Sci, Tianjin 300457, Peoples R China
英文摘要: We have studied the two-qubit quantum Rabi model in the asymmetric case and its generalizations with dipole and Heisenberg-type qubit-qubit interactions. The solutions are obtained analytically with eigenstates given in terms of the extended coherent states or photon number states. For identical qubit-photon couplings, a novel type of quasi-exact solution which exists for all coupling values with constant eigenenergy is found, leading to level crossings within the same parity subspace even for non-identical qubits. In contrast to the quasi-exact eigenstates of the single-qubit model, these exceptional eigenstates are formed by just a few Fock states (photon number bounded from above at one or three), and the condition for them depends only on a fine-tuning of the qubit level splittings with respect to the photon energy, but not on the coupling to the photon field if the qubit-qubit interaction is not taken into consideration. This makes them excellent candidates for direct experimental observation within circuit quantum electrodynamics (QED) and application in single photon experiments. Besides, exceptional solutions with finite photon numbers N are also found.
资助者: National Natural Science Foundation of China [11035001, 10735010, 10975072, 11375086, 11120101005, 11347112]; 973 National Major State Basic Research and Development of China [2010CB327803, 2013CB834400]; CAS Knowledge Innovation project [KJCX2-SW-N02]; Research Fund of Doctoral Point (RFDP) [20100091110028]; Research and Innovation Project for College Postgraduate of JiangSu Province [CXLX13-025, CXZZ13-0032]; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD); Deutsche Forschungsgemeinschaft [TRR80]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000338491100010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15713
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Peng, J,Ren, ZZ,Braak, D,et al. Solution of the two-qubit quantum Rabi model and its exceptional eigenstates[J]. JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL,2014,47(26):265303.
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