Optical dipole trap(ODT)is becoming an important tool of manipulating neu-tral atoms.In this paper ODT is realized with a far-off resonant laser beam strongly fo-cused in the magneto-optical trap(MOT)of cesium atoms.The light shift is measured by simply monitoring the fluorescence of the atoms in the magneto-optical trap and the opti-cal dipole trap simultaneously.The advantages of our experimental scheme are discussed,and the effect of the beam waist and power on the potential of dipole trap as well as heating rate is analyzed.
LIU TaoGENG TaoYAN ShubinLI GangZHANG JingWANG JunminPENG KunchiZHANG Tiancai
This paper has investigated quantum teleportation of even and odd coherent states in terms of the EPR entanglement states for continuous variables. It discusses the relationship between the fidelity and the entanglement of EPR states, which is characterized by the degree of squeezing and the gain of classical channels. It shows that the quality of teleporting quantum states also depends on the characteristics of the states themselves. The properties of teleporting even and odd coherent states at different intensities are investigated. The difference of teleporting two such kinds of quantum states are analysed based on the quantum distance function.
