光杠杆液体体胀系数测量仪简

针对实验室常见的液体体胀系数测量方法操作繁琐、劳动强度大、测定时间长、实验费用高等缺点,设计了光杠杆测量液体体胀系数的实验装置,使装入试管中的液体温度缓慢变化,通过光杠杆测量液面的高度的变化,可以准确地测量出液体的体胀系数。     

单缝衍射法测量金属线胀系数装置的研究

利用夫琅禾费单缝衍射中衍射条纹对缝宽的线性放大作用,设计了单缝衍射法测量金属线胀系数的实验装置.采用可控比例杠杆,使衍射狭缝随金属伸长按一定的比例变宽,扩大了测温范围.     

浅谈量子力学的教学改革

根据我校的实际问题,结合量子力学的课程特点,介绍了在教学内容、教学方法、教学手段等方面所作的一些有益的改革尝试．     

生物细胞仿生药物递送系统在癌症治疗中的应用

纳米药物在癌症的精准医疗方面具有广阔的应用前景,但纳米材料易被机体免疫系统识别并清除的特性使得其在癌症治疗方面的应用存在很大的局限性.受自然界生物系统的启发,生物细胞介导的药物递送系统近年来得到了广泛关注.该技术通过将生物体内源性细胞膜作为功能材料包覆在纳米药物表面,赋予其细胞膜的天然属性,或者将纳米载药粒子直接与活细胞共孵育,制备载药细胞,有效地将生物体"自体"的性质与"人工"纳米材料的优势相结合.这不仅大大降低了纳米药物的免疫原性,延长其血液循环时间,而且还可使其具备更强的肿瘤靶向能力.本文初步探讨了生物细胞仿生药物递送系统在肿瘤治疗中的研究进展并对其未来研究进行展望.     

Quantum information transfer between topological and conventional charge qubits

We propose a scheme to realize coherent quantum information transfer between topological and conventional charge qubits. We first consider a hybrid system where a quantum dot(QD) is tunnel-coupled to a semiconductor Majorana-hosted nanowire(MNW) via using gated control as a switch, the information encoded in the superposition state of electron empty and occupied state can be transferred to each other through choosing the proper interaction time to make measurements.Then we consider another system including a double QDs and a pair of parallel MNWs, it is shown that the entanglement information transfer can be realized between the two kinds of systems. We also realize long distance quantum information transfer between two quantum dots separated by an MNW, by making use of the nonlocal fermionic level formed with the pared Majorana feimions(MFs) emerging at the two ends of the MNW. Furthermore, we analyze the teleportationlike electron transfer phenomenon predicted by Tewari et al. [Phys. Rev. Lett. 100, 027001(2008)] in our considered system.Interestingly, we find that this phenomenon exactly corresponds to the case that the information encoded in one QD just returns back to its original place during the dynamical evolution of the combined system from the perspective of quantum state transfer.     

Quantum entanglement between the two-mode fields and atomic entropy squeezing in the system of a moving atom interacting with two-mode entangled coherent field

This paper investigates the entropy squeezing of a moving two-level atom interacting with the two-mode entangled coherent field via two-photon transition by using an entropic uncertainty relation and the degree of entanglement between the two-mode fields by using quantum relative entropy. The results obtained from numerical calculation indicate that the squeezed period, the duration of entropy squeezing and the maximal squeezing can be controlled by appropriately choosing the intensity of the light field, the atomic motion and the field-mode structure. The atomic motion leads to the periodic recovery of the initial maximal degree of entanglement between the two-mode fields. Moreover, there exists a corresponding relation between the time evolution properties of the atomic entropy squeezing and those of the entanglement between the two-mode fields.     

基于关系代数的软集合理论研究与应用

基于关系代数理论中的部分思想,定义了软集合理论中的差运算、选择运算和投影运算.探讨了关系代数和软集合的关系,运用关系代数的选择、投影、并、差等运算实现了软集合参数约简算法,并用SQL语言实现了算法.最后将算法运用到房屋置业选择问题中进行验证.结果表明,软集合方法能以一种更简单直接的形式为决策问题提供有效的参考依据.     

利用PN结测量玻尔兹曼常数实验分析

运用半导体的PN结扩散电流与电压关系特性，精确地测量了玻尔兹曼常数．实验选取了两种不同的温度环境，应用Origin6．0绘图软件进行了实验数据分析和处理，并对测量结果进行了比较．该实验对弱电流间接测量的方法对其他相关的实验有很好的借鉴作用．     

Bell态原子与双模纠缠相干光场相互作用的场熵演化特性

运用全量子理论研究了初始处于Bell态(对称迭加态或反对称态)的两原子与双模纠缠相干光场相互作用系统中场熵的演化特性. 分析了光场强度、光场纠缠度及原子间相互作用强度对场熵演化特性的影响. 结果表明：原子初态处于反对称态时,场熵始终为零;原子初态处在对称迭加态时,增大光场强度场熵的时间演化曲线逐渐变成较规则的振荡曲线,原子间的相互作用强度对双原子间纠缠度有显著的非线性调制作用.     

Bell态原子与双模纠缠相干光场相互作用的纠缠特性

运用Negativity熵研究了Bell态原子与双模纠缠相干光场相互作用系统中两个全同二能级原子之间的纠缠演化特性.分析了光场强度、光场纠缠度及原子间相互作用强度对纠缠的影响.结果表明:原子处于|β11〉时,两原子始终处于最大纠缠态;原子处于|β00〉时,初始纠缠的两原子始终较长时间处于退纠缠状态;原子处在|β10〉时,增大双模光场的平均光子数可以明显增大两原子之间的纠缠度并保持较大的纠缠状态;原子初态处在|β01〉时,原子间的相互作用强度对双原子间纠缠度有较显著的非线性调制作用.