【正】 We propose a controlled scheme for teleportation of an arbitrary one or two atomic state via a driven QEDcavity.The scheme does not involve the joint Bel
<正> On the basis of investigating the statistical data of bus transport networks of three big cities in China,wepropose that each bus route is a clique(maximal
【正】 We present,two schemes for concentrating unknown nonmaximally entangled Greenberger Horme-Zeilinger(GHZ) or W class states.The first scheme for concentra