We propose a scheme to generate two-atom maximally entangled state in cavity quantum electrodynamies (QED). The scheme can 5e extended to generation of entangled multi-atom Dicke states if we control the interaction...We propose a scheme to generate two-atom maximally entangled state in cavity quantum electrodynamies (QED). The scheme can 5e extended to generation of entangled multi-atom Dicke states if we control the interaction time of atoms with cavity modes. We use adiabatically state evolution under large atom-cavity detuning, so the scheme is insensitive to atomic spontaneous decay. The influence of cavity decay on fidelity and success probability is discussed.展开更多
We design two novel waveguides in membrane-stack photonic crystals and obtain their dispersion characteristics by the three-dimensional (3D) plane wave-expansion method. The 3D photon control phenomena are demonstra...We design two novel waveguides in membrane-stack photonic crystals and obtain their dispersion characteristics by the three-dimensional (3D) plane wave-expansion method. The 3D photon control phenomena are demonstrated, in which light is incident on the crystal and is bent both horizontally and vertically. Then light is split into two and is finally emitted from the other side of the crystal. A 319 splitter is realized. We also present a nanocavity to trap photons. With waveguides of different directions has been demonstrated. and nanocavities, the arbitrary 3D photon manipulation展开更多
基金Supported by Jiangsu Planned Projects for Postdoctoral Research Funds of China under Grant No.0702024BChina Postdoctoral Science Foundation Funded Project under Grant No.20080430171
文摘We propose a scheme to generate two-atom maximally entangled state in cavity quantum electrodynamies (QED). The scheme can 5e extended to generation of entangled multi-atom Dicke states if we control the interaction time of atoms with cavity modes. We use adiabatically state evolution under large atom-cavity detuning, so the scheme is insensitive to atomic spontaneous decay. The influence of cavity decay on fidelity and success probability is discussed.
文摘We design two novel waveguides in membrane-stack photonic crystals and obtain their dispersion characteristics by the three-dimensional (3D) plane wave-expansion method. The 3D photon control phenomena are demonstrated, in which light is incident on the crystal and is bent both horizontally and vertically. Then light is split into two and is finally emitted from the other side of the crystal. A 319 splitter is realized. We also present a nanocavity to trap photons. With waveguides of different directions has been demonstrated. and nanocavities, the arbitrary 3D photon manipulation