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CALCULATION OF huang-rhys PARAMETERS AND THEORETICAL ANALYSIS OF INTEGRATED INTENSITIES AND PROFILE OF d-d OPTICAL SPECTRA lN NON-CONDON APPROXIMATION

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Science China Mathematics 1992年第5期35卷 587-596页

作者：刘世宇夏上达汪克林 Department of Physics University of Science and Technology of China Hefei 230026 PRC Department of Physics University of Science and Technology of China Hefei 230026 PRC Fundamental Physics Center Unirersity of Science and Technology of China Hefei 230026 PRC

We develop in this paper the theory of multiphonon radiative transition so that someimportant physical quantities that describe effect s of lattice relaxation in electron transitions,for example, huang--rhys parameters, lattice relaxation energies and Stokes shifts, becomecomputable directly. The calculated results of the se physical quantities for alexandrite agreewith experimental data very well. Besides, we deduce expressions of intensity distributionand integrated intensity of a multiphonon sideband in non--Condon approximation. The cal-culated values of integrated intensities are obviously better than the intensity fitting resultsof previous work. From these calculated values we can also acquire a quantitative under-standing of the errors of Condon approximation.

关键词： lattice relaxation huang-rhys parameter non-Condon approximation

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Simulation of molecular spectroscopy with circuit quantum electrodynamics

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Science Bulletin 2018年第5期63卷 293-299页

作者： Ling Hu Yue-Chi Ma Yuan Xu Wei-Ting Wang Yu-Wei Ma Ke Liu Hai-Yan Wang Yi-Pu Song Man-Hong Yung Lu-Yan Sun Center for Quantum Information Institute for Interdisciplinary Information Sciences Tsinghua University Beijing 100084 China institute for Quantum-Science and Engineering and Department of Physics South University of Science and Technology of China Shenzhen 518055 China Shenzhen Key Laboratory of Quantum Science and Engineering Shenzhen 518055 China

Spectroscopy is a crucial laboratory technique for understanding quantum systems through their interactions with the electromagnetic ***,spectroscopy is capable of revealing the physical structure of molecules,leading to the development of the maser—the forerunner of the ***,real-world applications of molecular spectroscopy are mostly confined to equilibrium states,due to computational and technological constraints;a potential breakthrough can be achieved by utilizing the emerging technology of quantum *** we experimentally demonstrate through a toy model,a superconducting quantum simulator capable of generating molecular spectra for both equilibrium and non-equilibrium states,reliably producing the vibronic structure of diatomic ***,our quantum simulator is applicable not only to molecules with a wide range of electronic-vibronic coupling strength,characterized by the huang-rhys parameter,but also to molecular spectra not readily accessible under normal laboratory *** results point to a new direction for predicting and understanding molecular spectroscopy,exploiting the power of quantum simulation.

关键词： Molecular spectroscopy Circuit quantum electrodynamics Correlation function huang-rhys parameter

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