一般双耦合非全同玻色谐振子能量本征值的精确解

利用坐标变换技巧，研究了两个质量和频率均不相同的玻色谐振子体系，得到了在-λx1x2 vp1p2耦合作用下能量本征值的精确解．     

利用坐标变换精确求解二维耦合谐振子的能量本征值

利用坐标变换研究了二维耦合谐振子能量本征值问题，给出了变换矩阵的一般形式及二维耦合波色谐振子能量本征值的精确解．     

利用坐标变换精确求解二维耦合谐振子的能量本征值

利用坐标变换研究了二维耦合谐振子能量本征值问题,给出了变换矩阵的一般形式及二维耦合波色谐振子能量本征值的精确解.     

电场中带电谐振子在坐标表象和能量表象中的解

运用不同的方法讨论了电场中带电谐振子在坐标表象和能量表象中能量本征值和本征函数的求解方法．认为电场中带电谐振子用定态微扰的方法不仅可以求近似解，也可找到其精确解。     

简正坐标法求解耦合谐振子的定态薜定谔方程

采用简正坐标方法使耦合谐振子哈密顿算符对角化,精确出解出含有耦合项(-λx1x2 vp1p2)的各向异性谐振子的简正频率和能量本征值。     

一般双模双耦合谐振子能谱的精确解

在占有数表象中通过幺正变换将质量和频率均不相同的双模双耦合谐振子体系的哈密顿量对角化,得到了双模双耦合谐振子体系能谱的精确解,给出了求解双模耦合谐振子本征能谱的一般方法．     

一维非简谐振子束缚态的研究

文中利用微扰法和自洽场方法,研究一维非简谐振子的束缚态,得到体系的能量本征值以及波函数.比较两种方法的计算结果,表明自洽场方法比一阶微扰论更精确.     

有限差分法求解一维非线性谐振子问题

针对许多量子体系很难得到薛定谔方程解析解这个问题,本文提出采用有限差分法求解薛定谔方程,从而将连续的量子力学本征值问题转化为离散的矩阵运算问题.首先,以一维线性谐振子为例,采用有限差分法求解了该体系的本征能量以及本征函数;然后,与一维线性谐振子的解析解进行对比,验证了有限差分法求解薛定谔方程的可行性与准确性;最后,又采用有限差分法求解了一维非线性谐振子的本征能量以及本征函数,并与微扰法得到的近似解进行了比较.     

三维谐振子的超对称性和形不变性

本文应用量子力学中超对称性和形不变性的方法求解三维各向同性谐振子的能量本征值和本征波函数．所得到的能谱公式与用其他方法获得的严格解完全一致     

一种新非简谐振子势的阶梯算符

本文运用超对称构造出了一种新精确可解非简谐振子势的能量阶梯算符，并由阶梯算符求出了其能量本征值和本征函数。     

耦合谐振子的代数解法──波戈留波夫变换法

本文利用波戈留波夫变换法，提出了一种求解ｎ维耦合谐振子的程序，称之为退耦程序（ｄｅｃｏｕｐｌｉｎｇｐｒｏｃｅｄｕｒｅ）．并用该程序求解了２维耦合谐振子问题。     

利用二次型理论精确求解双模双耦合谐振子的能谱

利用二次型理论构造一个幺正矩阵进行坐标变换,将质量和频率均不相同的双模双耦合谐振子体系的哈密顿量对角化,得出一般双模双耦合谐振子体系能谱的精确解,同时提供了一种解决该类问题的一般数学方法。     

Coherent dynamics of a flux qubit coupled to a harmonic oscillator

In the emerging field of quantum computation and quantum information, superconducting devices are promising candidates for the implementation of solid-state quantum bits (qubits). Single-qubit operations, direct coupling between two qubits and the realization of a quantum gate have been reported. However, complex manipulation of entangled states-such as the coupling of a two-level system to a quantum harmonic oscillator, as demonstrated in ion/atom-trap experiments and cavity quantum electrodynamics-has yet to be achieved for superconducting devices. Here we demonstrate entanglement between a superconducting flux qubit (a two-level system) and a superconducting quantum interference device (SQUID). The latter provides the measurement system for detecting the quantum states; it is also an effective inductance that, in parallel with an external shunt capacitance, acts as a harmonic oscillator. We achieve generation and control of the entangled state by performing microwave spectroscopy and detecting the resultant Rabi oscillations of the coupled system.     

介观互感电容耦合双谐振电路在压缩真空态下的量子涨落

对介观互感电容耦合电路作双模耦合谐振子处理,将其量子化.通过三次幺正变换,将体系的哈密顿量对角化,给出了体系的本征能谱,研究了压缩真空态下回路中电荷和电流的量子涨落.     

Fock态下介观电容耦合阻尼双谐振RLC电路的量子涨落

将介观电容耦合阻尼电路作双模耦合阻尼谐振子处理,使其量子化,通过3次幺正变换,将体系的哈密顿量对角化,并给出了体系的本征能谱.研究了Fock态、真空态下回路中电荷和电流的量子涨落.     

Coupled quantized mechanical oscillators

The harmonic oscillator is one of the simplest physical systems but also one of the most fundamental. It is ubiquitous in nature, often serving as an approximation for a more complicated system or as a building block in larger models. Realizations of harmonic oscillators in the quantum regime include electromagnetic fields in a cavity and the mechanical modes of a trapped atom or macroscopic solid. Quantized interaction between two motional modes of an individual trapped ion has been achieved by coupling through optical fields, and entangled motion of two ions in separate locations has been accomplished indirectly through their internal states. However, direct controllable coupling between quantized mechanical oscillators held in separate locations has not been realized previously. Here we implement such coupling through the mutual Coulomb interaction of two ions held in trapping potentials separated by 40?μm (similar work is reported in a related paper). By tuning the confining wells into resonance, energy is exchanged between the ions at the quantum level, establishing that direct coherent motional coupling is possible for separately trapped ions. The system demonstrates a building block for quantum information processing and quantum simulation. More broadly, this work is a natural precursor to experiments in hybrid quantum systems, such as coupling a trapped ion to a quantized macroscopic mechanical or electrical oscillator.     

电场中q—形变谐振子及其相干态的量子特性

运用q微商解得电场中q-形变谐振子的能级结构和本征函数,构造了q-形谱谐振子的Glauber相干态,研究了其量子特性,发现由于形变参数的影响,其能级结构及动力学行为与普通谐振子有很大差别,当q=1时,q-形变谐振子退化为普通谐振子。