Using two tripartite Greenberger-Horne-Zeilinger (GHZ) states as the shared channels, we investigate the noise effects on the deterministic joint remote preparation of an arbitrary two-qubit state. By unitary matrix...Using two tripartite Greenberger-Horne-Zeilinger (GHZ) states as the shared channels, we investigate the noise effects on the deterministic joint remote preparation of an arbitrary two-qubit state. By unitary matrix decomposition procedure, we first construct the quantum logic circuit of the deterministic joint remote state preparation protocol. Then, we analytically derive the fidelity and the average fidelity for the deterministic joint remote preparation of an arbitrary two- qubit state and of four types of special two-qubit states under the influence of the Pauli noises. It is found that the fidelity depends on the noise types, the qubit-environment coupling strength, and the state to be remotely prepared. Moreover, even if the two GHZ channels are subject to the same environmental noises, the average fidelities for remotely preparing different two-qubit states display different time evolution behaviors. The remote preparation of the identical two-qubit states also shows that the average fidelities affected by different noisy environments exhibit different evolution actions.展开更多
It is proved that the chemical reaction induced by femtosecond laser filament in the atmosphere produces CO,HCN,and NO,and the production CO and HCN are observed for the first time.The concentrations of the products a...It is proved that the chemical reaction induced by femtosecond laser filament in the atmosphere produces CO,HCN,and NO,and the production CO and HCN are observed for the first time.The concentrations of the products are measured by mid-infrared tunable laser absorption spectroscopy.In the reduced pressure air,the decomposition of CO_(2) is enhanced by vibration excitation induced by laser filament,resulting in the enhanced production of CO and HCN.At the same time,the CO and HCN generated from the atmosphere suffer rotation excitation induced by laser filament,enhancing their absorption spectra.It is found that NO,CO,and HCN accumulate to 134 ppm,80 ppm,and 1.6 ppm in sealed air after sufficient reaction time.The atmospheric chemical reaction induced by laser filament opens the way to changing the air composition while maintaining environmental benefits.展开更多
Arabic and Chinese are one of the most difficult languages to learn in the world.The mark of Arabic is Pinyin characters plus pinyin symbols.On the other hand,the mark of Chinese is ideographic square shaped character...Arabic and Chinese are one of the most difficult languages to learn in the world.The mark of Arabic is Pinyin characters plus pinyin symbols.On the other hand,the mark of Chinese is ideographic square shaped characters;each pronunciation of a Chinese character is generally a syllable.There are great differences between Arabic and Chinese consonants,so this paper mainly discusses the similarities and differences between the two languages and their respective characteristics through the comparative analysis of Chinese and Arabic consonants.展开更多
Attribute is an important point in grammar knowledge,although it’s not a main component,it’s just an additional component,but it’s a very essential factor.On the contrary,it plays an important role in the expressio...Attribute is an important point in grammar knowledge,although it’s not a main component,it’s just an additional component,but it’s a very essential factor.On the contrary,it plays an important role in the expression of semantics,as well as the proper use of attributes,can help us make the expression more accurate.So far,the study based on teaching method which compared Chinese attribute to Arabic doesn’t appear in Arabian countries or China.Therefore,studying Chinese language students in which Arabic language is their native language,have many problems when they learn attribute in Chinese language.In this paper we try to find out the differences of the attribute in both languages through the comparative analysis to help us understand the problems which Arabic countries students have while studying Chinese attributes.展开更多
The Chinese Nation:Integration or Pluralism by Zhou Ping is an important paper in the field of political science.The connotation of“the Chinese nation”and“the nation”has aroused heated debates among the scholars o...The Chinese Nation:Integration or Pluralism by Zhou Ping is an important paper in the field of political science.The connotation of“the Chinese nation”and“the nation”has aroused heated debates among the scholars of politics and ethnology.In line with the policy of“a hundred schools of thought contend”,this paper makes targeted comments on the specific points of Zhou Ping’s paper,in particular,the connotation of“the Chinese nation”,“the integration of the Chinese nation”,“the nation”and these major issues will be discussed one by one.Finally,the author puts forward some important insights of his own.展开更多
China still has 556 million rural vulnerable population in 2021,and rural revitalization has become China’s national development strategy.On December 8,2022,the author conducted an in-depth interview with the coordin...China still has 556 million rural vulnerable population in 2021,and rural revitalization has become China’s national development strategy.On December 8,2022,the author conducted an in-depth interview with the coordinator of Cloud City Company,a leading enterprise in Haishen Village,Huinan Township,Pudong New Area in Shanghai.This case sketches a panoramic picture of the co-production in Haishen Village through a qualitative research method of narrative inquiries.It provides what has happened in Haishen Village with the detailed description and some comments on Shanghai rural revitalization.This paper also raised many arguable questions to be further discussed.展开更多
In September 2021,the leaders of Australia,the United Kingdom,and the United States announced the establishment of an enhanced trilateral security partnership called AUKUS.1 Over the past few months,the three countrie...In September 2021,the leaders of Australia,the United Kingdom,and the United States announced the establishment of an enhanced trilateral security partnership called AUKUS.1 Over the past few months,the three countries have made some progress in Australia’s nuclear-powered submarine program and advanced collaboration in capacity building.Up to now,academic discussions on AUKUS within China mainly focus on the nuclear-powered submarine program,with different views on the nature.展开更多
Recent work in decision neuroscience suggests that visual saliency can interact with reward-based choice,and the lateral intraparietal cortex(LIP)is implicated in this process.In this study,we recorded from LIP neuron...Recent work in decision neuroscience suggests that visual saliency can interact with reward-based choice,and the lateral intraparietal cortex(LIP)is implicated in this process.In this study,we recorded from LIP neurons while monkeys performed a two alternative choice task in which the reward and luminance associated with each offer were varied independently.We discovered that the animal’s choice was dictated by the reward amount while the luminance had a marginal effect.In the LIP,neuronal activity corresponded well with the animal’s choice pattern,in that a majority of reward-modulated neurons encoded the reward amount in the neuron’s preferred hemifield with a positive slope.In contrast,compared to their responses to low luminance,an approximately equal proportion of luminance-sensitive neurons responded to high luminance with increased or decreased activity,leading to a much weaker population-level response.Meanwhile,in the non-preferred hemifield,the strength of encoding for reward amount and luminance was positively correlated,suggesting the integration of these two factors in the LIP.Moreover,neurons encoding reward and luminance were homogeneously distributed along the anterior-posterior axis of the LIP.Overall,our study provides further evidence supporting the neural instantiation of a priority map in the LIP in reward-based decisions.展开更多
基金Project supported by the National Natural Science Foundation of China (Grant Nos.11174081,11034002,11104075,and 11134003)the National Basic Research Program of China (Grant Nos.2011CB921602 and 2012CB821302)the Open Fund from the SKLPS of ECNU
文摘Using two tripartite Greenberger-Horne-Zeilinger (GHZ) states as the shared channels, we investigate the noise effects on the deterministic joint remote preparation of an arbitrary two-qubit state. By unitary matrix decomposition procedure, we first construct the quantum logic circuit of the deterministic joint remote state preparation protocol. Then, we analytically derive the fidelity and the average fidelity for the deterministic joint remote preparation of an arbitrary two- qubit state and of four types of special two-qubit states under the influence of the Pauli noises. It is found that the fidelity depends on the noise types, the qubit-environment coupling strength, and the state to be remotely prepared. Moreover, even if the two GHZ channels are subject to the same environmental noises, the average fidelities for remotely preparing different two-qubit states display different time evolution behaviors. The remote preparation of the identical two-qubit states also shows that the average fidelities affected by different noisy environments exhibit different evolution actions.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.1625501 and 62027822)the Research Funds of Happiness Flower ECNU,China(Grant No.2021ST2110).
文摘It is proved that the chemical reaction induced by femtosecond laser filament in the atmosphere produces CO,HCN,and NO,and the production CO and HCN are observed for the first time.The concentrations of the products are measured by mid-infrared tunable laser absorption spectroscopy.In the reduced pressure air,the decomposition of CO_(2) is enhanced by vibration excitation induced by laser filament,resulting in the enhanced production of CO and HCN.At the same time,the CO and HCN generated from the atmosphere suffer rotation excitation induced by laser filament,enhancing their absorption spectra.It is found that NO,CO,and HCN accumulate to 134 ppm,80 ppm,and 1.6 ppm in sealed air after sufficient reaction time.The atmospheric chemical reaction induced by laser filament opens the way to changing the air composition while maintaining environmental benefits.
文摘Arabic and Chinese are one of the most difficult languages to learn in the world.The mark of Arabic is Pinyin characters plus pinyin symbols.On the other hand,the mark of Chinese is ideographic square shaped characters;each pronunciation of a Chinese character is generally a syllable.There are great differences between Arabic and Chinese consonants,so this paper mainly discusses the similarities and differences between the two languages and their respective characteristics through the comparative analysis of Chinese and Arabic consonants.
文摘Attribute is an important point in grammar knowledge,although it’s not a main component,it’s just an additional component,but it’s a very essential factor.On the contrary,it plays an important role in the expression of semantics,as well as the proper use of attributes,can help us make the expression more accurate.So far,the study based on teaching method which compared Chinese attribute to Arabic doesn’t appear in Arabian countries or China.Therefore,studying Chinese language students in which Arabic language is their native language,have many problems when they learn attribute in Chinese language.In this paper we try to find out the differences of the attribute in both languages through the comparative analysis to help us understand the problems which Arabic countries students have while studying Chinese attributes.
文摘The Chinese Nation:Integration or Pluralism by Zhou Ping is an important paper in the field of political science.The connotation of“the Chinese nation”and“the nation”has aroused heated debates among the scholars of politics and ethnology.In line with the policy of“a hundred schools of thought contend”,this paper makes targeted comments on the specific points of Zhou Ping’s paper,in particular,the connotation of“the Chinese nation”,“the integration of the Chinese nation”,“the nation”and these major issues will be discussed one by one.Finally,the author puts forward some important insights of his own.
文摘China still has 556 million rural vulnerable population in 2021,and rural revitalization has become China’s national development strategy.On December 8,2022,the author conducted an in-depth interview with the coordinator of Cloud City Company,a leading enterprise in Haishen Village,Huinan Township,Pudong New Area in Shanghai.This case sketches a panoramic picture of the co-production in Haishen Village through a qualitative research method of narrative inquiries.It provides what has happened in Haishen Village with the detailed description and some comments on Shanghai rural revitalization.This paper also raised many arguable questions to be further discussed.
文摘In September 2021,the leaders of Australia,the United Kingdom,and the United States announced the establishment of an enhanced trilateral security partnership called AUKUS.1 Over the past few months,the three countries have made some progress in Australia’s nuclear-powered submarine program and advanced collaboration in capacity building.Up to now,academic discussions on AUKUS within China mainly focus on the nuclear-powered submarine program,with different views on the nature.
基金supported by the National Science and Technology Innovation 2030 Major Program(2021ZD0203700/2021ZD0203702)the Shanghai Municipal Science and Technology Major Project(2018SHZDZX05)+1 种基金the Program of Introducing Talents of Discipline to Universities(Ministry of Education of China,Base B16018)NYU Shanghai Boost Fund.
文摘Recent work in decision neuroscience suggests that visual saliency can interact with reward-based choice,and the lateral intraparietal cortex(LIP)is implicated in this process.In this study,we recorded from LIP neurons while monkeys performed a two alternative choice task in which the reward and luminance associated with each offer were varied independently.We discovered that the animal’s choice was dictated by the reward amount while the luminance had a marginal effect.In the LIP,neuronal activity corresponded well with the animal’s choice pattern,in that a majority of reward-modulated neurons encoded the reward amount in the neuron’s preferred hemifield with a positive slope.In contrast,compared to their responses to low luminance,an approximately equal proportion of luminance-sensitive neurons responded to high luminance with increased or decreased activity,leading to a much weaker population-level response.Meanwhile,in the non-preferred hemifield,the strength of encoding for reward amount and luminance was positively correlated,suggesting the integration of these two factors in the LIP.Moreover,neurons encoding reward and luminance were homogeneously distributed along the anterior-posterior axis of the LIP.Overall,our study provides further evidence supporting the neural instantiation of a priority map in the LIP in reward-based decisions.