探究式教学与讲授式教学的有机整合研究——“受迫振动和共振”的教学案例

改革课堂教学模式,转变课堂教学组织形式,提高课堂学习的有效性是当前高校教育教学改革的热点问题。我们设计了一个教学案例进行探究式教学的实践,以此来探讨探究式教学和讲授式教学的有机整合模式,希望能提高大学物理教学的有效性。     

Three-Dimensional Quantum State Transferring Between Two Remote Atoms by Adiabatic Passage under Dissipation

Recently, Zhou et al. [Phys. Rev. A 79 （2009） 044304] proposed a scheme for transferring three-dimensional quantum states between remote atomic qubits confined in cavities connected by fibers through adiabatic passage. In order to avoid the decoherence due to spontaneous emission, Zhou et al. utilized the large detuning atom-field interaction. In the present paper, we discuss the influence of dissipation on the scheme in both the resonant atom-field interaction case and the large detuning case. We numerically analyze the success probability and the transferring fidelity. It is shown that the resonant case is a preferable choice for the technique of the stimulated Raman adiabatic passage （STIRAP） due to the shorter operation time and the smaller probability of dissipation.     

熵测不准关系与光场的熵压缩

用熵作为光场量子涨落的量度,根据熵测不准关系,建立了熵压缩的概念,具体研究了光场与原子相互作用时的熵压缩,结果显示,熵压缩实现了对光场压缩效应的高灵敏量度。     

原子质心运动和场模结构对场相位动力学的影响

运用Ｐｉｇｇ－Ｂａｒｎｅｔｔ的厄米相位公式,研究了Ｊ－Ｃ模型中原子质心运动和场模结构对场相位动力学的影响。在未考虑原子质心动力和考虑原子质心运动两种情况下,分别给出了场相位概率分布和相位涨落随时间的变化规律,并比较了两种情况下的场相位动力学,结果表明：原子质心动力导致场相位动力学的周期性演化,场模结构参数决定其周期的大小。     

Probabilistic remote preparation of a high-dimensional equatorial multiqubit with four-party and classical communication cost

This paper presents a protocol for probabilistic remote preparation of a high-dimensional equatorial multiqubit with four-party,consisting of a sender and three receivers.The quantum channel is composed of a partial entangled high-dimensional four-particle state.We calculate the successful total probability and the total classical communication cost required for this scheme.It is shown that both the entangled resources and classical communication cost are greatly reduced.