2) Josephson
约瑟夫森
1.
The foresee of Smale horseshoes transformation of planar Josephson equation with Melnikov function ,obtaining the solution of Josephson equation under condition of(t)=0 and (t)0with perturbation metho
利用梅尔尼科夫 (Melnikov)函数法预测平面约瑟 (Josephson)方程具有斯梅尔马蹄变换 (SmalehorseshoesTransformation) ,应用微扰法对约瑟夫森方程在ε(t) =0和ε(t)≠ 0 ,两种条件下求出了方程的
3) Josephson junction
约瑟夫森结
1.
Quantization of mesoscopic mutual inductance coupling circuit with superconducting Josephson junctions and their quantum effects;
含有超导约瑟夫森结介观互感电路的量子化及其量子效应
2.
Quantum corrections in fitting the switching current distributions of intrinsic Josephson junction;
本征约瑟夫森结跳变电流分布的量子修正
3.
Computer simulations for the intermittent-type chaos and chaos control in RC-shunted Josephson junction;
电阻电容分路的约瑟夫森结中阵发性混沌及混沌控制的计算机模拟
4) Josephson junctions
约瑟夫森结
1.
Quantum dynamics, in particular, macroscopic quantum tunneling in Josephson junctions coupled with resonant electro-magnetic modes is studied in the paper.
研究存在电磁共振模式耦合时约瑟夫森结中的宏观量子效应。
5) Josephson effect
约瑟夫森效应
1.
A new kind of magnetic flux sensor is designed based on the Josephson effect of high temperature superconductor, the major components of a magnetic flux sensor are superconducting quantum interference device and corresponding apparatus, such as input coil, filtering circuit, oscillating circuit and ancillary circuit.
基于超导体的约瑟夫森效应设计一种新型的磁通传感器,以高温超导量子干涉仪制作,再配合相应的输入线圈、滤波电路、振荡电路和辅助电路实现。
2.
According to the AC Josephson effect,we have studied the issue of the phase locking of Josephson junction arrays embedded in the Fabry-Perot resonator under the microwave radiation.
根据交流约瑟夫森效应,研究了嵌入Fabry-Perot谐振腔里的约瑟夫森结阵列在微波辐照下的相位锁定问题。
6) mesoscopic Josephson junction
介观约瑟夫森结
1.
An effective bosonic Hamiltonian describing the interaction of a mesoscopic Josephson junction with a quantized radiation field is studied.
研究一个描述介观约瑟夫森结与量子辐射场相互作用系统的等效玻色子哈密顿量 。
2.
To investigate the interaction of a mesoscopic Josephson junction with a single mode quantized electromagnetic field, the diagnonalizing process of the coupled system Hamiltonian was performed by using an unitary transformation.
研究介观约瑟夫森结与量子化电磁场相互作用系统 。
3.
To study the nonclassical effects of the mesoscopic Josephson junction in the presence of a nonclassical microwave, the mesoscopic Josephson junction and the field were both treated quantum mechanically, and the external field approximation was used.
研究非经典光场作用下介观约瑟夫森结中的非经典效应 。
补充资料:约瑟夫森结阵电压基准
约瑟夫森结阵电压基准
voltage primary standard based on Josephson junction array
丫旧”fusen」泊2油nd泊n四jizhun约恶夫森结阵电压甚准(volt叫奖prin返叮stsn-d田d址曰刃onJ姗灿即njunction an习y)以约瑟夫森效应为基础建立的电压标准,由于以量子现象为依据,所以又称为量子电压基准。 在极低温度(例如液氮温度)下,有些金属的电阻实际变为零,这种状态称为超导态,这种金属则称为超导体。如果两超导体间隔以0.Inrn一3nrn的绝缘层,称这两超导体为弱祸合,这样的器件后来被称为约瑟夫森器件或约瑟夫森结。l%2年英国学者B.D.约瑟夫森从理论上预言,当电子对(又称库拍对)穿越两超导体之间这一极薄的绝缘阻挡层时,将会有如下效应:①当一直流超导电流(其最大值称为临界电流I)通过上述阻挡层时,没有电压降产生。这现象称为直流约瑟夫森效应,是1肠3年P.W.安德森和J.M.罗威尔通过实验观察到的。②当在约瑟夫森结的两端加一定直流电压U时,除了产生通常的传导电流外,在约瑟夫森结处还出现频率为石的交流超导电流,频率为和所加直流电压的关系为: ,,Ze11二U写~~‘.n式中。为基本电荷,h为普朗克常量。这一现象是5.萨皮罗于1%3年首先观察到的,故又称萨皮罗台阶(如图所示)。第n个(n为整数)台阶处的电压为 ,hU一二时l人,==叮二r~ ,二‘e式中KJ称为约瑟夫森常数,它是n二1时的约瑟夫森频率对电压的商。理论和大t实验表明KJ是个普适常数,精确等于2e/h,且在很高的精确度内没有发现它随实验变量(如台阶数、频率、超导材料辐射功率等)的改变而变化。约瑟夫森结是一个完美的频率一电压转换器,其比例常数是不变的基本物理常数比(2e/h)。由于频率能以很高准确度测定,如果KJ准确已知的话,就可利用它来复现和保存伏特单位量值。 I 约瑟夫森结和萨皮罗台阶示惫图 1988年,国际计1局电学咨询委员会(CCEM)根据包括中国在内的6个国家通过电单位绝对侧t所得的8个KJ的数据和用基本物理常数组合计算得到的两个结果,平差得: KJ_.二483 597 .9 GH公V国际计量委员会决定从19叭)年l月l日起统一启用该数值,通过约瑟夫森电压标准装t来复现电压单位量值。该值的标准偏差(即与SI真值的符合程度)为4xlo“’。决定并没有对伏特单位进行重新定义,只是规定了用准确度和复现性更高、不随时间变化的t子电压基准代替传统的标准电池组来保存和复现电压单位量值。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条