A New Strategy for Rapid Classification of Honeys by Simple Cluster Analysis Method Based on Combination of Various Physicochemical Parameters

An array of real honey samples from 3 difl^rent botanical origins and 4 provinces of China, as well as two honeys with common adulterantsfwhite sugar and high fructose com syrup(HFCS)], were analyzed with a new strategy of “simple cluster analysis" based on physicochemical parameters of honey. The results showed that the physicochemical parameters varied greatly for different honey samples. For example, the minimum conductivity of honey samples was less than 1/17 of the maximum value. Therefore, the physicochemical parameters could be used to distinguish different types of honey. The results are promising, as different kinds of testing honey were successfully discriminated into different groups, allowing us to verify the authenticity of honeys. Furthermore, this approach was followed to successfully analyze two honeys with common adulterants, which are difficult to be identified when they are mixed with true honeys. The results indicated the accuracy and reliability of the proposed strategy, and provided more references for the quality classification of honeys.     

保参数方向的形状可调过渡曲线与曲面

针对保参数方向构造过渡曲线曲面方法的不足, 构造了任意参数曲线曲面间既保持参数方向又具有形状可调性的C¹与C²连续过渡曲线曲面。首先,基于2类带1个自由参数的调配函数,分别构造满足C¹与C²连续的过渡曲线,并讨论基于能量优化模型的最佳过渡曲线构造问题;然后,将所提出的方法推广到过渡曲面的构造。 实例结果表明,2被过渡曲线曲面为任意参数曲线曲面时,利用该方法构造的过渡曲线曲面不仅与2被过渡曲线曲面的参数方向保持一致,而且可利用所带的自由参数对其形状进行调整。通过能量优化模型确定自由参数的取值,可获得尽可能光顺的过渡曲线曲面。 所提方法弥补了保参数方向构造过渡曲线曲面方法的不足,是一种实用的过渡曲线曲面构造方法。     

Effect of Multiphoton Processes on Geometric Quantum Computation in Superconducting Circuit QED

We study the influence of multi-photon processes on the geometric quantum computation in the systems of superconducting qubits based on the displacement-like and the general squeezed operator methods. As an example, we focus on the question about how to implement a two-qubit geometric phase gate using superconducting circuit quantum electrodynamics with both single- and two-photon interaction between the qubits and the cavity modes. We find that the multiphoton processes are not only controllable but also improve the gating speed. The comparison with other physical systems and experimental feasibility are discussed in detail.     

Geometric Phase Gate Based on Both Displacement Operator and Squeezed Operators with a Superconducting Circuit Quantum Electrdynamics

We give the brief review on the related definition of the geometric phase independent of specific physical system based on the displacement opreator and
the sqeezed operator, then show how the displacement operator and the squeezed operator can induce the general geometric phase. By means of the displacement operator and the squeezed operator concerning the circuit cavity mode state along a closed path in the phase space, we discuss specifically how to implement a two-qubit geometric phase gate in circuit quantum electrodynamics with both single photon interaction and two-photon interaction between the superconducting qubits and the circuit cavity modes. The experimental feasibility is discussed in detail.     

微波固相反应前驱体热分解法制备纳米氧化铜粉体

将固体CuSO4·5H2O和Na2CO3混合均匀后溶于适量乙醇中,然后进行微波辐照,立即反应生成泥浆状固体,将该泥浆状固体洗涤后干燥即可得到粉状前驱体.然后在600 ℃加热1 h分解该前驱体,即可制得纳米氧化铜粉体.在加热速率为10 ℃/min的条件下,对该前驱体进行表征,发现其热分解和晶体化温度约为550 ℃.对制得的纳米氧化铜粉体进行XRD、SEM、TEM和IR分析,结果表明制得的产物为纳米氧化铜粉体,其粉体粒径在30～50 nm,平均粒径约为40 nm.     

Approximate and Conditional Teleportation of an Unknown Atomic State with Dissipative Jaynes-Cummings Model

A scheme for approximately and conditionally teleporting an unknown atomic state in dissipative cavity QED is proposed. It is the extension of the scheme of [Phys. Rev. A 69 （2004） 064302], where the cavity mode decay has not been considered and only a time point of system evolution and the corresponding fidelity implementing the teleportation are given. In fact, the cavity mode decay exists really and must be delt with. In this paper, we investigate the influence from the cavity mode decay on the implementation of the approximate and conditional teleportation by means of the dissipative Jaynes Cummings model and then show the analytical expression of the fidelity of realization of the teleportation. Alternatively, our scheme does not involve an additional atom, only requiring two atoms and one single-mode cavity.     

Approximate and Conditional Teleportation of an Unknown Atomic-Entangled State Without Bell-State Measurement

A scheme for approximately and conditionally teleporting an unknown atomic-entangled state in cavity QED is proposed.It is the novel extension of the scheme of [Phys.Rev.A 69 (2004) 064302],where the state to be teleported is an unknown atomic state and where only a time point of system evolution and the corresponding fidelity implementing the teleportation are given.In fact,there exists multi-time points and the corresponding fidclities,which are shown in this paper and then are used to realize the approximate and conditional teleportation of the unknown atomic-entangled state.Naturally,our scheme does not involve the Bell-state measurement or an additional atom,which is required in the Bell-state measurement,only requiring one single-mode cavity.The scheme may be generalized to not only the teleportation of the cavity-mode-entangled-state by means of a single atom but also the teleportation of the unknown trapped-ion-entangled-state in a linear ion trap and the teleportation of the multi-atomic entangled states included in generalized GHZ states.     

Two-Photon Jaynes-Cummings Model Governed by Milburn Equation with Phase Damping

In this paper, we find an analytic solution of the master equation of a non-resonant two-photon JaynesCummings model (JCM) with phase damping with the help of the super-operator technique. We study the influence of phase damping on non-classical effects in the JCM, such as oscillations of the photon-number distribution, revivals of the atomic inversion, and sub-Possion photon statistics. It is demonstrated that the phase damping suppresses the revivals of the atomic inversion and non-classical effects of the cavity field in the JCM.     

作用在有限线性空间上基柱为2F4(q)的几乎单群

本文研究了基柱同构于2F4(q)的线传递的几乎单群.利用了有限线性空间上线传递的自同构群的经典结论,以及2F4(q)的阶和极大子群等性质,获得了点稳定子群和线稳定子群的分类.     

核-隔层-壳结构Fe3O4@MoO3@mSiO2纳米载体的合成及其药物可控释放

利用加热均匀、迅速、热平稳性好和安全性高的微波热响应来实现药物的微波可控释放。引入具有微波热响应性质、热稳定性和化学稳定性好的MoO₃作为微波吸收物质,制备了核-隔层-壳结构Fe₃O₄@MoO₃@mSiO₂纳米药物载体。研究该纳米载体对药物布洛芬（IBU）的负载和微波响应可控释放过程。该纳米载体具有高的比表面积（222 cm²·g^-1）和较大的孔隙体积（0.14 cm³· g^-1）可用来负载药物。同时还具有较好的磁响应性,可实现药物的靶向给药,具有相对好的微波热响应性,可通过MoO₃中间层吸收微波辐射实现药物的可控释放。结果表明,在持续微波辐射360 min时IBU的释放率达到86%,远远高于仅搅拌时的释放率。