Bound state solutions of the two--dimensional Schr\"{o}dinger equation with Kratzer--type potentials

Exactly solvable models play an extremely important role in many fields of quantum physics. In this study, the Schr\"{o}dinger equation is applied for a solution of a two--dimensional (2D) problem for two particles interacting via Kratzer, and modified Kratzer potentials. We found the exact bound state solutions of the two--dimensional Schr\"{o}dinger equation with Kratzer--type potentials and present analytical expressions for the eigenvalues and eigenfunctions. The eigenfunctions are given in terms of the associated Laguerre polynomials.Comment: 8 pages, 1 figur

Control of a single-photon router via an extra cavity

Controllable single-photon routing plays an important role in quantum networks. We investigate single-photon scattering in two one-dimensional (1D) waveguides by a three-level emitter with a cascade configuration, which is a dipole coupled to an extra cavity. The tunneling path for the transmission of a single photon is switched by whether the extra cavity contains photons. For the setup, the Autler-Townes splitting is modulated by the extra cavity, in which the transmission valley (reflection range) width is tunable in terms of the number of photons in the extra cavity. Our investigation will be beneficial to single-photon routing in quantum networks using quantifiable photon numbers in an extra cavity.Comment: 7pages,5figure

开展创先争优活动 构建和谐医患关系——以急诊科 党支部为例

Further developing activities of striving to be advanced and creating excellence are the need of strengthening party organization of basic level and establishing harmonious society of the socialism. In this paper, we explore the concrete methods of carrying out activities of striving to be advanced and creating excellence in emergency department, and their effects on improving relationship between medical care providers and patients, it has certain theoretical and real significance.深入开展创先争优活动，是加强基层党组织建设、构建社会主义和谐社会的需要。本文针对医院急诊科医患关系的特点，以创先争优活动为契机，创新实践载体，探讨在医院急诊科开展创先争优活动的具体方法及对改善医患关系的作用与效果，具有一定理论和现实意义