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A Bayesian validation approach to practical boson sampling

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Science China(Physics,Mechanics & Astronomy) 2020年第5期63卷 39-46页

作者： Zhe Dai Yong Liu Ping Xu WeiXia Xu XueJun Yang JunJie Wu Institute for Quantum Information&State Key Laboratory of High Performance Computing College of Computer National University of Defense TechnologyChangsha 410073China

boson sampling is a promising candidate for demonstrating quantum supremacy. The validation that involves judging whether a quantum setup outputs photons following the boson sampling model is an essential task in the experiments. However, the current validation methods may result in an incorrect conclusion being reached in realistic experiments, in which no ideally identical photons exist. Accordingly, this study proposes a slope-based approach, which is an extended Bayesian validation, to model the degree of photon indistinguishability. Through numerical simulations and performance evaluations, we demonstrate that the proposed approach can correctly validate boson sampling against the distribution of classical particles. In addition to offering a useful approach for validation, our research indicates that physicists should pay more attention to the quality of photon indistinguishability in boson sampling experiments.

关键词： boson sampling quantum supremacy Bayesian validation photon indistinguishability

SU(5) symmetry of spdfg interacting boson model

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Science China(Physics,Mechanics & Astronomy) 2003年第2期46卷 204-213页

作者：李京生刘玉鑫高鹏 Department of Physics Peking UniversityBeijing 100871China Department of Physics Peking UniversityBeijing 100871China The Key Laboratory of Heavy Ion PhysicsMinistry of EducationPeking UniversityBeijing 100871China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100080China Center of Theoretical Nuclear PhysicsNational Laboratory of Heavy Ion AcceleratorLanzhou 730000China

The extended interacting boson model with s-, p-, d-, f- and g-bosons included (spdfg IBM)is investigated. The algebraic structure including the generators, the Casimir operators of the groups at the SU(5) dynamical symmetry and the branching rules of the irreducible representation reductions along the group chain are obtained. The typical energy spectrum of the symmetry is given.

关键词： interacting boson model, octupole deformation, superdeformation, shape coexistence.

boson Realization of Shell Model Algebras Sp(2∧)

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Science China Mathematics 1994年第3期37卷 311-322页

作者：张庆营 Department of Physics Hunan UniversityChanysha 410082PRChe method for deriving closed analytic boson realizations of Sp(4) is extended to the search for the boson realizations of shell model algebras Sp(2∧) (∧ is an arbitrary integer).The case of general Sp(2∧) is much more complicated than that of Sp(4) because the generators of Sp(2∧) (∧>2) become infinite series It is very difficult to find an exact solution to the boson realization of general Sp (2∧).But if the higher order terms in the generators of Sp(2∧) are neglectedapproximate analytic results can he obtained.

The method for deriving closed analytic boson realizations of Sp(4) is extended to the search for the boson realizations of shell model algebras Sp(2∧) (∧ is an arbitrary integer).The case of general Sp(2∧) is much more complicated than that of Sp(4) because the generators of Sp(2∧) (∧>2) become infinite series It is very difficult to find an exact solution to the boson realization of general Sp (2∧).But if the higher order terms in the generators of Sp(2∧) are neglected,approximate analytic results can he obtained.

关键词： boson mapping Sp(2A) algebra shell model interacting boson model

The Effect of Slepton Flavor Mixing on the Mass of SM-like Higgs boson in the MSSM

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Communications in Theoretical Physics 2014年第7期61卷 71-76页

作者：衡朝霞周海静 Department of Physics Henan Normal University

We investigate the one-loop contributions to the mass of the SM-like Higgs boson in the MSSM considering the effect of slepton flavor mixing, which is parametrized by the dimensionless parameter δXY(X, Y = L, R) in the slepton mass matrices. For the surviving samples under the experimental constraints, we calculate the corrections to the mass of the SM-like Higgs boson in terms of δXY. We find that the mass correction ?mhcan even be larger than 10 GeV for large δRLor δLR. Moreover, ?mhhas strong sensitivity to δRLor δLR, while the weak sensitivity to δLLor δRR, sinceδRLor δLRenters directly into the coupling of Higgs boson with sleptons in the calculations of Higgs boson self-energies.

关键词： MSSM SM-like Higgs boson Slepton flaver mixing

The lepton flavor violating signal of the extra gauge boson Z′in photon-photon collision at the ILC

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Science China(Physics,Mechanics & Astronomy) 2010年第11期53卷 1992-1997页

作者： LIU GuoLi 1,2 1 Physics Department,Zhengzhou University,Zhengzhou 450001,China 2 Kavli Institute for Theoretical Physics China,Chinese Academy of Sciences,Beijing 100190,China Physics Department Zhengzhou University Zhengzhou China Kavli Institute for Theoretical Physics China Chinese Academy of Sciences Beijing China

The hitherto unconstrained lepton flavor mixings,induced by the new gauge boson Z ,which are the prediction of many new physics models,such as topcolor-assisted technicolor (TC2) models and flavor-universal TC2 models,may lead to the lepton flavor violating productions of τμˉ,τeˉ and μeˉ in photon-photon collision at the proposed International Linear Collider (ILC).Through a comparative analysis of these processes,we find that the better channel to probe the new physics models is the production of τμˉ or τeˉ which occurs at a much higher rate than μeˉ production due to the large mixing angle and the large flavor changing coupling,and may reach the detectable level of the ILC for a large part of the parameter space.Since the rates predicted by the Standard Model are far below the detectable level,these processes may serve as a sensitive probe for such new physics models.

关键词： new gauge boson Z lepton flavor violating processes photon-photon

SU(3) limit of sdgpf interacting boson model

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Science China Mathematics 1998年第12期41卷 1296-1301页

作者：龙桂鲁张伟林纪华鹰朱胜江 Department of Physics Tsinghua University Beijing China Institute of Theoretical Physics Chinese Academy of Sciences Beijing China

The \%SU\%(3) limit of the \%sdg\|pf\% interacting boson model is proposed. Applications to the collective states of 236,238 U are discussed. It is shown that the spectra can be well described by the model.

关键词： interacting boson model \%SU\%(3) limit \%g\%\|boson negative parity states.

Energy Staggering in Ground Bands of ^(232)Th and ^(236,238)U Nuclei Using the Interacting Vector boson Model

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Communications in Theoretical Physics 2015年第7期64卷 90-94页

作者： A.M.Khalaf M.M.Sirag M.Kotb Physics Department Faculty of Science Al-Azhar University Physics Department Faculty of Girls Ain Shams University

The△I = 2 and △I = 4 staggering parameters of transition energies Eγfor normally deformed positive parity ground bands in232 Th and236,238 U nuclei are studied in framework of the symplectic extension of the interacting vector boson model. The model parameters are obtained from the fitting procedure between the calculated excitation energies and the corresponding experimental ones. The staggering parameters represent the finite difference approximations to higher order derivatives dnEγ/d Inof the γ-ray transition energies in a△I = 2 and △I = 4 bands, which yielding multipoint formulae. The first order derivative(two-point formula) provides us with information about the dynamical moment of inertia. The staggering oscillation for the fourth order derivative(five-point formula) is about 0.5 Ke V and is even larger than that in superdeformed bands. The quite similarity in dynamical moments of inertia of the isotopes236,238 U up to high spin states indicate that the phenomenon of identical bands is not restricted to superdeformed bands.

关键词： staggering interacting vector boson model moment o

Renormalization of the g-boson Effects for Os Isotopes

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Chinese journal of nuclear physics 1996年第3期18卷 160-164页

作者： Zhang, Zhanjun Liu, Yong Sang, Jianping Huazhong Normal Univ Wuhan China

A modified renormalization approach based on that proposed by Druce et al.is presented.The over-all agreement between the spectra calculated here and the accurate spectra is significantly improved.We also useDurce’s approach to generate the renormalized spectra.It is shown that in our microscopic study,both of the ap-proaches are very useful to the determination of several free parameters of fermion residual interactions.

关键词： Renormalization of g-boson effects Dyson boson mapping Os isotope

Microscopic Calculation of Parameters of the sdg Interacting boson Model for ^(104-110)Pd Isotopes

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Chinese journal of nuclear physics 1995年第3期17卷 194-199页

作者： Liu Yong~1 Shi Zhu-yi~2 Dan Han-jou~3 Sang Jian-ping~41 Institute of Particle Physics,Huazhong Normal University,Wuhan 4300702 Department of Physics,Guizhou Institute for Nationalities,Guiyang 5500253 Department of Physics,Xianning Teacher’s College,Xianning 4370004 Department of Physics,Wuhan University,Wuhan 430072 华中师范大学粒子物理所湖北武汉贵州民族学院物理系贵州贵阳 550025 咸宁师范高等专科学校物理系湖北咸宁 437000 武汉大学物理系湖北武汉

The parameters of the sdg interacting boson model Hamiltonian are calculated for the 104-110Pdisotopes.The calculations utilize the microscopic procedure based on the Dyson boson mapping proposedby Yang-Liu-Qi and extended to include the g boson effects.The calculated parameters reproduce thosevalues from the phenomenological fits.The resulting spectra are compared with the experimental spectra.

关键词： sdg interacting boson model Dyson boson mapping Microscopic investigation