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多孔二氧化硅玻璃的有效介电函数 总被引:1,自引:1,他引:0
本文研究了具有7.5nm孔隙的多孔二氧化硅玻璃的介电函数与孔隙度的关系,通过实验检验,选出了公式lnε1+θ2lnε2,能较好描述介电性质,对光谱选择性材料的设计具有参考价值。 相似文献
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Grover量子搜索算法及改进 总被引:2,自引:0,他引:2
简单地介绍了量子搜索算法中的相位匹配条件、 改进的成功率为100%的量子搜索算法和量子搜索算法中的主要误差等. We briefly introduced some of our recent work related to the phase matching condition in quantum searching algorithms and the improved Grover algorithm. When one replaces the two phase inversions in the Grover algorithm with arbitrary phase rotations, the modified algorithm usually fails in searching the marked state unless a phase matching condition is satisfied between the two phases. The Grover algorithm is not 100% in success rate, an improved Grover algorithm with zero failure rate is given by replacing the phase inversions with angles that depends on the size of the database. Other aspects of the Grover algorithm such as the SO(3) picture of quantum searching, the dominant gate imperfections in the Grover algorithm are also mentioned. 相似文献
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在 IBM2中研究了混合对称态 .发现某些较高自旋的混合对称态随着 Majorana相互作用很快变化 .这个结果改变了传统的关于混合对称态的观点 :最大 F旋态的能量最低 ,F旋越小 ,能量越高 .Fmin或 Fmin- 1的态会成为 yrast或 yrare态 .这些态很难向下衰变 ,因而很稳定.这个研究的结果表明可能存在一种由于质子和中子自由度的特殊性质而引起的新的同质异能态. Mixed symmetry states were studied in the framework of the neutron proton interacting boson model(IBM2). It was found that some of the mixed symmetry states with moderate high spins changed very fast with respect to the Majorana interaction. This changes our traditional picture that the maximum F spin states are the lowest in energy, the smaller the F spin, the higher the energy. The minimum F spin states or the state with F spin next to minimum may become the yrast or... 相似文献
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