We report experimental realization of a quantum version of Maxwell＇s demon using solid state spins where the information acquiring and feedback operations by the demon are achieved through conditional quantum gates.A...We report experimental realization of a quantum version of Maxwell＇s demon using solid state spins where the information acquiring and feedback operations by the demon are achieved through conditional quantum gates.A unique feature of this implementation is that the demon can start in a quantum superposition state or in an entangled state with an ancilla observer. Through quantum state tomography, we measure the entropy in the system, demon, and the ancilla, showing the influence of coherence and entanglement on the result. A quantum implementation of Maxwell＇s demon adds more controllability to this paradoxical thermal machine and may find applications in quantum thermodynamics involving microscopic systems.展开更多
China’s overseas interest has become more visible and fragile with the deepening of integration into the world.To protect China’s overseas interest,we need to focus on the realization of China’s“sustainable overse...China’s overseas interest has become more visible and fragile with the deepening of integration into the world.To protect China’s overseas interest,we need to focus on the realization of China’s“sustainable overseas interest”in addition to the prevention of direct infringement and threat.“Sustainable overseas interest”include different content levels of nation,corporate and society.Referring to the experience of other countries,we find that China still lacks the main body dimension in its maintenance mechanism of“sustainable overseas interest”,and the social mechanism level of the trinity system of government,enterprise and society is still insufficient.展开更多
It was approved by the State Council in I984 to establish economicand technological development zones in 14 coastal port cities tofunction as windows for those cities to attract foreign investment,introduce advanced t...It was approved by the State Council in I984 to establish economicand technological development zones in 14 coastal port cities tofunction as windows for those cities to attract foreign investment,introduce advanced technology and management methods andexpand the export-oriented economy.Since 1992,18 other developmentzones have been approved by the Council,increasing the number ofsuch zones to 32.展开更多
The right to social security is the basic right of citizens of a country. The International Covenant on Economic, Social and Cultural Rights, which came into effect for China on June 27, 2001, stipulates in its Articl...The right to social security is the basic right of citizens of a country. The International Covenant on Economic, Social and Cultural Rights, which came into effect for China on June 27, 2001, stipulates in its Article 9 that "the States Parties to the present Covenant recognize the right of everyone to social security, including social insurance." It also says in its Article 2 (1) that "each State Party to the present Covenant undertakes to take steps, individually and through international assistance and co-operation, especially economic展开更多
基金Supported by the Ministry of Education of Chinathe National Key Research and Development Program of China under Grant No 2016YFA0301902
文摘We report experimental realization of a quantum version of Maxwell＇s demon using solid state spins where the information acquiring and feedback operations by the demon are achieved through conditional quantum gates.A unique feature of this implementation is that the demon can start in a quantum superposition state or in an entangled state with an ancilla observer. Through quantum state tomography, we measure the entropy in the system, demon, and the ancilla, showing the influence of coherence and entanglement on the result. A quantum implementation of Maxwell＇s demon adds more controllability to this paradoxical thermal machine and may find applications in quantum thermodynamics involving microscopic systems.
文摘China’s overseas interest has become more visible and fragile with the deepening of integration into the world.To protect China’s overseas interest,we need to focus on the realization of China’s“sustainable overseas interest”in addition to the prevention of direct infringement and threat.“Sustainable overseas interest”include different content levels of nation,corporate and society.Referring to the experience of other countries,we find that China still lacks the main body dimension in its maintenance mechanism of“sustainable overseas interest”,and the social mechanism level of the trinity system of government,enterprise and society is still insufficient.
文摘It was approved by the State Council in I984 to establish economicand technological development zones in 14 coastal port cities tofunction as windows for those cities to attract foreign investment,introduce advanced technology and management methods andexpand the export-oriented economy.Since 1992,18 other developmentzones have been approved by the Council,increasing the number ofsuch zones to 32.
文摘The right to social security is the basic right of citizens of a country. The International Covenant on Economic, Social and Cultural Rights, which came into effect for China on June 27, 2001, stipulates in its Article 9 that "the States Parties to the present Covenant recognize the right of everyone to social security, including social insurance." It also says in its Article 2 (1) that "each State Party to the present Covenant undertakes to take steps, individually and through international assistance and co-operation, especially economic
