NON-GAUSSIANITY

作品数:20被引量:7H指数:1
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相关领域:理学天文地球机械工程更多>>
相关作者:刘军更多>>
相关机构:清华大学更多>>
相关期刊:《Journal of Ocean University of China》《Science China(Life Sciences)》《Communications in Theoretical Physics》《Chinese Physics B》更多>>
相关基金:国家自然科学基金国家高技术研究发展计划安徽省自然科学基金更多>>
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Photon-modulated displaced thermal states:negativity and non-Gaussianity
《Communications in Theoretical Physics》2025年第4期34-38,共5页Wei-feng Wu Yong Fang Peng Fu 
supported by the Collaborative Innovation Project of University,Anhui Province(Grant No.GXXT-2022-088)。
In this paper,we propose a new non-Gaussian quantum state,termed the photon-modulated displaced thermal state(DTS).Using the operator ordering method,we obtain the normal ordering product of its density operator and t...
关键词:photon-modulated displaced thermal state normalization Wigner function NON-GAUSSIANITY 
Primordial black holes and scalar induced density perturbations:the effects of probability density functions
《Chinese Physics C》2025年第2期202-208,共7页Jing-Zhi Zhou Yu-Ting Kuang Zhe Chang Xukun Zhang Qing-Hua Zhu 
Supported by the National Nature Science Foundation of China(12475075,12075249,11690022)and the Key Research Program of the Chinese Academy of Sciences(XDPB15)。
We investigate the second order energy density perturbation induced by small-scale Gaussian and local-type non-Gaussian primordial curvature perturbations.The relative abundance of primordial black holes(PBHs)is calcu...
关键词:NON-GAUSSIANITY primordial black hole primordial power specturm 
Non-Gaussianity detection of single-mode rotationally symmetric quantum states via cumulant method
《Chinese Physics B》2024年第5期264-273,共10页向少华 黄利军 米贤武 
Project supported by the Natural Science Foundation of Hunan Province of China(Grant No.2021JJ30535)。
The non-Gaussianity of quantum states incarnates an important resource for improving the performance of continuous-variable quantum information protocols.We propose a novel criterion of non-Gaussianity for single-mode...
关键词:non-Gaussianity criterion cumulant matrix quadrature distribution 
Developing improved measures of non-Gaussianity and Gaussianity for quantum states based on normalized Hilbert–Schmidt distance
《Chinese Physics B》2023年第5期297-307,共11页向少华 李珊珊 米贤武 
the Natural Science Foundation of Hunan Province of China (Grant No. 2021JJ30535);the Research Foundation for Young Teachers from the Education Department of Hunan Province of China (Grant No. 20B460)。
Non-Gaussianity of quantum states is a very important source for quantum information technology and can be quantified by using the known squared Hilbert–Schmidt distance recently introduced by Genoni et al.(Phys. Rev...
关键词:non-Gaussianity measure non-Gaussian states phase-space distribution function 
Estimating the evolution of sea state non-Gaussianity based on a phase-resolving model
《Journal of Oceanology and Limnology》2022年第5期1909-1923,共15页Xingjie JIANG Tingting ZHANG Dalu GAO Daolong WANG Yongzeng YANG 
Supported by the National Key Research and Development Program of China(Nos.2016YFC1402004,2016YFC1401805,2017YFC1404201)。
The occurrence of rogue waves is closely related to the non-Gaussianity of sea states,and this non-Gaussianity can be estimated using corresponding two-dimensional wave spectra.This paper presents an approach to non-G...
关键词:rogue wave sea state non-Gaussianity high-order spectral method spectral geometry wave-wave nonlinearity 
Alternative non-Gaussianity measures for quantum states based on quantum fidelity
《Chinese Physics B》2022年第3期192-200,共9页Cheng Xiang Shan-Shan Li Sha-Sha Wen Shao-Hua Xiang 
Project supported by the Natural Science Foundation of Hunan Province, China (Grant No. 2021JJ30535);the Science and Technology Innovation Foundation for College Students in Hunan Province of China (Grant No. 2020RC1013);the Research Foundation for Young Teachers from the Education Department of Hunan Province of China (Grant No. 20B460)。
We propose three alternative measures for non-Gaussianity of quantum states: sine distance, Bures angle, and Bures distance, which are based on quantum fidelity introduced by Wang [Phys. Lett. A 373 58(2008)]. Using t...
关键词:NON-GAUSSIANITY quantum fidelity non-Gaussian states sine metric 
The running curvaton
《Chinese Physics C》2020年第8期207-216,共10页Lei-Hua Liu Wu-Long Xu 
LH is funded by Hunan Natural Science Foundation(2020JJ5452);Hunan Provincial Department of Education(19B464);WL is funded by NSFC(1175012)。
In this paper,we propose a homogeneous curvaton mechanism that operates during the preheating process and in which the effective mass is running(i.e.,its potential consists of a coupling term and an exponential term w...
关键词:INFLATION curvature perturbation PREHEATING curvaton mechanism NON-GAUSSIANITY cosmological constant 
Probability Distribution of the Hull Motion and Mooring Line Tension of Two Floating Systems被引量:1
《Journal of Ocean University of China》2020年第2期281-297,共17页ZHANG Deqing DU Junfeng WANG Junrong CHANG Anteng 
the support by the National Natural Science Foundation of China(Nos.51709247 and 51490675);the National Key R&D Program of China(No.2016YFE0200100)
The statistical and distribution characteristics of the responses of a floater and its mooring lines are essential in designing floating/mooring systems.In general,the dynamic responses of offshore structures obey a G...
关键词:probability density function hull motion mooring line tension NON-GAUSSIANITY Gaussian Mixture Model 
Primordial perturbations and non-gaussianities in Ho?ava-Lifshitz gravity
《Chinese Physics C》2019年第7期118-126,共9页Xian Gao 
Partly supported by the Chinese National Youth Thou-sand Talents Program(71000-41180003)
We investigate primordial perturbations and non-gaussianities in the Ho?ava-Lifshitz theory of gravitation.In the UV limit, the scalar perturbation in the Ho?ava theory is naturally scale-invariant, ignoring the detai...
关键词:COSMOLOGICAL perturbation theory primordial NON-GAUSSIANITY Horava GRAVITY INFLATION 
Non-Gaussianity dynamics of two-mode squeezed number states subject to different types of noise based on cumulant theory被引量:1
《Chinese Physics B》2018年第10期181-189,共9页Shaohua Xiang Xixiang Zhu Kehui Song 
Project supported by the Natural Science Foundation of Hunan Province,China(Grant No.2017JJ2214);the Key Project Foundation of the Education Department of Hunan Province,China(Grant No.14A114
We provide a measure to characterize the non-Gaussianity of phase-space function of bosonic quantum states based on the cumulant theory. We study the non-Gaussianity dynamics of two-mode squeezed number states by anal...
关键词:NON-GAUSSIANITY CUMULANTS squeezed number states DECOHERENCE 
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