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Logic qubit plays an important role in current quantum communication. In this paper, we propose an efficient entanglement concentration protocol (ECP) for a new kind of logic Bell state, where the logic qubit is the concatenated Greenber–Horne–Zeilinger (C-GHZ) state. Our ECP relies on the nondemolition polarization parity check (PPC) gates constructed with cross-Kerr nonlinearity, and can distill one pair of maximally entangled logic Bell state from two same pairs of less-entangled logic Bell states. Benefit from the nondemolition PPC gates, the concentrated maximally entangled logic Bell state can be remained for further application. Moreover, our ECP can be repeated to further concentrate the less-entangled logic Bell state. By repeating the ECP, the total success probability can be effectively increased. Based on above features, this ECP may be useful in future long-distance quantum communication. 相似文献
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Self‐assembly of Cd(NO3)2 with o ‐phthalic acid monopotassium salt (KHphth) in the presence of ethylenediamine (en) produced a new heterometallic coordination polymer [CdK2(phth)2(en)0.5(H2O)]n ( 1 ). Single‐crystal X‐ray analyses reveal that it crystallizes in a monoclinic space group P 21/c. a = 11.6707(6) Å, b = 8.1019(4) Å, c = 20.9503(11) Å, β = 94.6640(10)o. The complex displays an en‐pillared 3D framework, which is constructed from 2D [CdK2(phth)2(H2O)]n layers featuring uncommon inorganic cadmium‐potassium‐oxide layers containing potassium‐oxide layers. In the solid state, complex 1 shows photoluminescence with the maximum emission intensities at 355 nm upon excitation at 312 nm. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
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红外光谱法在淀粉/聚乙烯低温热氧降解研究中的应用 总被引:4,自引:1,他引:3
共聚物;聚乙烯/淀粉共聚物;红外光谱法在淀粉/聚乙烯低温热氧降解研究中的应用 相似文献
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Phan Quoc Khanh Lai Jiu Lin Vo Si Trong Long 《Mathematical Methods of Operations Research》2014,79(3):253-272
In this paper, we establish a continuous selection theorem and use it to derive five equivalent results on the existence of fixed points, sectional points, maximal elements, intersection points and solutions of variational relations, all in topological settings without linear structures. Then, we study the solution existence of a number of optimization-related problems as examples of applications of these results: quasivariational inclusions, Stampacchia-type vector equilibrium problems, Nash equilibria, traffic networks, saddle points, constrained minimization, and abstract economies. 相似文献
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A New Water‐Soluble Phosphorus‐Dipyrromethene and Phosphorus‐Azadipyrromethene Dye: PODIPY/aza‐PODIPY 下载免费PDF全文
Dr. Xin‐Dong Jiang Jiuli Zhao Dongmei Xi Haifeng Yu Jian Guan Shuang Li Dr. Chang‐Liang Sun Prof. Dr. Lin‐Jiu Xiao 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(16):6079-6082
PODIPY and aza‐PODIPY have been successfully prepared by the treatment of dipyrromethene and azadipyrromethene with POCl3 in the presence of Et3N. The new PODIPY and aza‐PODIPY dyes are found to have photophysical properties. PODIPY and aza‐PODIPY are water‐soluble, and aza‐PODIPY is suited for labeling living Hep‐2 cells for imaging assays in the near‐infrared region. Molecular orbital calculations show that the increase in the HOMO–LUMO band gap for the lowest energy absorption bands is observed in the new phosphorus‐containing aza‐PODIPY, and the HOMO and LUMO energies of aza‐PODIPY are found to be higher than those of aza‐BODIPY. 相似文献
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