REALIZATION OF QUANTUM ALGORITHMS ON SIMULATOR AND SPECTROMETER OF NMR

报道了利用NMR谱仪和NMR模拟机实现量子算法.以天然苯为样品,我们分别用500M谱仪和NMR模拟机实现了量子D-J算法,Grover搜寻算法及受控非门(C-NOT).通过比较实验谱和模拟谱发现二者能很好符合.利用NMR模拟机实现量子算法比用NMR谱仪更为方便、清晰.     

无数据算题解法面面观

无数据算题,是题中无明文数据的一类计算题。不少学生惯于数字、字母常规计算,面对无数据算题思维无头绪,更谈不上用什么技能和技巧。笔者在高二无数据算题教学中,采用如下具体作法。     

速效胃宁冲剂中微量元素锌锰镍的分析

用火焰原子吸收法测定了5批速效胃宁冲剂中锌、锰、镍的含量。结果表明,速效胃宁冲剂中锌含量较丰富,镍较少;其含量由高到低的顺序为：锌＞锰＞镍。探讨了速效胃宁冲剂中微量元素与疗效的关系。     

氟代脱硝制备含氟硝基苯

二硝基苯;硝基氟苯;氟代脱硝;相转移催化     

核磁共振量子计算机的实验实现

简要介绍了液相核磁共振（NMR）实现量子信息处理的基本原理和实验技术,综述了核磁共振量子计算机的实验实现的进展情况和目前遇到的主要困难,并对进一步的发展作了展望。     

Experimental realization of information transmission between not-directly-coupled spins on NMR quantum computers

This paper presents a simple scheme for information transmission between two non-directly interactive qubits in an n-qubit system. An example has been realized on a three-qubit nuclear magnetic resonance (NMR) spectrometer quantum computer. The experimental result successfully demonstrates that the feasible measure can also be extended to other quantum logical gates, or other quantum algorithms, where some qubits have no direct interactions in a multi-qubit system.     

高速飞行体周围再入流场的红外辐射机理及其强度计算

自从红外探测在宇航飞行中被成功地运用以来,人们对研究高速飞行体再入流场的红外辐射特性越来越关切。宇航飞行体再入流场异常复杂,细致地研究它的各种特性是非常困难的,辐射特性也不例外。起初,有关的科学工作者只能对流场辐射作某些总体特征的了解和估算,提供宇航工程设计部门参考。当前,电子计算技术的飞快发展,为推进再入流场的研究和计算提供了极为     

Ultranarrow bandwidth tunable atomic filter via quantum interference-induced polarization rotation in Rb vapor

We report the experimental demonstration of an ultranarrow bandwidth atomic filter by optically induced polarization rotation in multilevel electromagnetically induced transparency systems in hot Rb vapor. With a coupling intensity of 2.3 W/cm^2, the filter shows a peak transmission of 33.2% and a bandwidth of 10 MHz. By altering the coupling frequency, a broad tuning range of several Doppler linewidths of the D1 line transitions of STRb atoms can be obtained. The presented atomic filter has useful features of ultranarrow bandwidth, and the operating frequency can be tuned resonance with the atomic transition. Such narrowband tunable atomic filter can be used as an efficient noise rejection tool in classical and quantum optical applications.     

Sm和U原子光电离截面的模型势计算

本文给出了使用四种不同形式的势对Sm基态光学电子所属壳层光电离截面计算的结果,同时给出了U原子三个激发态参量形式的极化修正模型势光电离截面的计算结果.我们的结果与其他作者使用相同形式的势计算的结果较好地符合.使用参数形式的极化模型势计算光电离截面是一种有效的方法.     

Quantum Entanglement and Information Transmission Between Non—Direct—Coupled Qubits in an Array of Spatially Fixed Qubits

We propose a simple scheme to create entangled states and realize information transmission between qubits with non-direct interactions on the basis of quantum superdense coding and swap operations.This may offer the possibility of applications in scalable quantum computers.