摘要
提出了一种制备四原子Ｇｒｅｅｎｂｅｒｇｅｒ－Ｈｏｒｎｅ－Ｚｅｉｌｉｎｇｅｒ 态的方案，它是基于原子－腔场相互作用，首先两个分离的腔初始时处于真空态，通过双光子转移把两个腔制备成缠结态．随后，与腔场发生共振相互作用的４ 个等同的原子被分别送入两个腔，通过相互作用后，４ 个原子处于ＧＨＺ态，而两个腔仍然处于真空态．
A scheme for generating four atom Greenberger Horne Zeilinger (GHZ) state is presented.It is based on atom cavity field interactions.Two separated cavities are both initially in the vacuum states,the entanglement of this two cavities is prepared by a two photon transition (as cascade of two off resonant dipole transitions).Subsequently,four identical two level atoms,resonant with the cavities,are sent through the cavities,respectively.After interactions,the four atoms are in the GHZ states,while two cavities are left in the vacuum states.
出处
《光子学报》
EI
CAS
CSCD
2000年第1期18-21,共4页
Acta Photonica Sinica
