A new optical pumping scheme is presented that uses incoherent Raman transitions to prepare a trapped Cesium atom in a specific Zeeman state within the 6S_{1/2}, F=3 hyperfine manifold. An important advantage of this scheme over existing optical pumping schemes is that the atom can be prepared in any of the F=3 Zeeman states. We demonstrate the scheme in the context of cavity quantum electrodynamics, but the technique is equally applicable to a wide variety of atomic systems with hyperfine ground-state structure.
Coherence Induced by Incoherent Pumping Field and Decay Process in Three-level $Λ$ Type Atomic System
根据Victor V. Kozlov等人的方法，[PhysRevA. 74. 063829]，考察了具有简并低重能级的$Λ$型三能级原子系统中非相干泵浦和自发衰变过程引起的相干性.在不同条件下，系统呈现出相干布居囚禁态和多稳态的特征。有趣的是，系统在不同的抽运和衰减参数下产生的两种稳态，即“单重态”和“三重态”，在抽运场和真空库的作用下，表现出稳定或不稳定的特性，这为量子光学中原子相干和干涉的研究提供了有益的应用.
Left-handedness with three zero-absorption windows tuned by the incoherent pumping field and inter-dot tunnelings in a GaAs/AlGaAs triple quantum dots system
Analysis of exciton-polariton condensation under different pumping schemes for 1D and 2D microcavities including the effect of strong correlation between polaritons
Reverse quantum aging: Restoring rhythmicity from quantum aging state
Chaos and Complex Systems Research Laboratory, Department of Physics, University of Burdwan（巴德万大学物理系混沌与复杂系统研究实验室）；Department of Physics & Astronomy, Northwestern University（西北大学物理与天文学系）
Raman sideband cooling of a 138Ba+ ion using a Zeeman interval
运动基态冷却和内态制备是量子信息处理中量子逻辑谱的重要组成部分。由于QLS不需要通常与量子计算和量子模拟相关联的高门级性能，因此可以以一定保真度为代价来简化离子种类和量子协议的选择。在这里，我们报告边带冷却和运动状态检测协议$^{138}$钡$^+$的QLS没有一个非常窄带的激光或使用的物种与超精细结构的足够的保真度。我们利用$^{138}$ Ba $^+$的两个S $_{1/2}$塞曼子能级，通过拉曼边带将单个离子冷却到运动基态.由于小的塞曼分裂，$^{138}$ Ba $^+$的近共振拉曼边带冷却仅需要多普勒冷却激光器和两个附加的AOM。通过观察近共振拉曼光抽运荧光，我们估算了最终的平均运动量子数$\bar{n}\approx0.17$。我们还采用了第二个，远离共振激光驱动拉曼$π$ -脉冲之间的两个塞曼子级，以提供运动状态检测QLS和确认边带冷却效率，测量最终的$\bar{n} = 0.15(6)$。
Adiabatic preparation of a fractional quantum Hall fluid by coherently pumping atoms from a Bose-Einstein condensate
Pitaevskii BEC Center, INO-CNR and Dipartimento di Fisica, Università di Trento（皮塔耶夫斯基玻色-爱因斯坦凝聚中心，意大利国家研究委员会物质研究所和特伦托大学物理系）；Department of Physics, TU Dortmund University（多特蒙德大学物理系）；Technische Universität Berlin, Institut für Physik und Astronomie（柏林工业大学物理与天文学研究所）
