We explore the entanglement features of pure symmetric N-qubit states characterized by N-distinct spinors with a particular focus on the Greenberger-Horne-Zeilinger (GHZ) states and , an equal superposition of W and o...We explore the entanglement features of pure symmetric N-qubit states characterized by N-distinct spinors with a particular focus on the Greenberger-Horne-Zeilinger (GHZ) states and , an equal superposition of W and obverse W states. Along with a comparison of pairwise entanglement and monogamy properties, we explore the geometric information contained in them by constructing their canonical steering ellipsoids. We obtain the volume monogamy relations satisfied by states as a function of number of qubits and compare with the maximal monogamy property of GHZ states.展开更多
在我国重要高坝工程抗震设计中,采用设定地震方法确定坝址场地相关设计反应谱时,同时依据地震安评和NGA反应谱衰减关系,但两者的震源和参数不匹配。本文在当前研究现状下提出确定场地相关设计反应谱的方法:基于全球范围的NGA WEST 2数据...在我国重要高坝工程抗震设计中,采用设定地震方法确定坝址场地相关设计反应谱时,同时依据地震安评和NGA反应谱衰减关系,但两者的震源和参数不匹配。本文在当前研究现状下提出确定场地相关设计反应谱的方法:基于全球范围的NGA WEST 2数据库,构建以震级和震中距分档的反应谱数据库。针对混凝土坝和坐落在深厚覆盖层的土石坝,分别建立来自基岩近场和远场大震强震动记录的反应谱数据库。根据设定地震的震级和距离,从反应谱数据库分步插值,直接给出与设计峰值加速度相应的场地相关设计反应谱。采用上述思路确定场地相关设计反应谱,避开了具有诸多不确定性且与地震安评不匹配的反应谱衰减关系,其结果更为合理。展开更多
文摘We explore the entanglement features of pure symmetric N-qubit states characterized by N-distinct spinors with a particular focus on the Greenberger-Horne-Zeilinger (GHZ) states and , an equal superposition of W and obverse W states. Along with a comparison of pairwise entanglement and monogamy properties, we explore the geometric information contained in them by constructing their canonical steering ellipsoids. We obtain the volume monogamy relations satisfied by states as a function of number of qubits and compare with the maximal monogamy property of GHZ states.
文摘在我国重要高坝工程抗震设计中,采用设定地震方法确定坝址场地相关设计反应谱时,同时依据地震安评和NGA反应谱衰减关系,但两者的震源和参数不匹配。本文在当前研究现状下提出确定场地相关设计反应谱的方法:基于全球范围的NGA WEST 2数据库,构建以震级和震中距分档的反应谱数据库。针对混凝土坝和坐落在深厚覆盖层的土石坝,分别建立来自基岩近场和远场大震强震动记录的反应谱数据库。根据设定地震的震级和距离,从反应谱数据库分步插值,直接给出与设计峰值加速度相应的场地相关设计反应谱。采用上述思路确定场地相关设计反应谱,避开了具有诸多不确定性且与地震安评不匹配的反应谱衰减关系,其结果更为合理。
