Preparation of Highly Squeezed States and Multi-component Entangled Coherent States via th

Preparation of Highly Squeezed States and Multi-component Entangled Coherent States via the

Raman Interaction

ZHENG Sbi-Biao

【期刊名称】《理论物理通讯（英文版）》 【年(卷),期】2002(037)001

【摘要】A method is presented for generating highly squeezed states of a cavity field via the atom-cavity field interaction of the Raman type. In the scheme a sequence of three-level A-type atoms interacts with a cavity field, displaced by a classical source, in a Rarman manner. Then the atomic states are measured. By this way the cavity field may collapse onto a superposition of several coherent states, which exhibits strong squeezing. The scheme can also be used to prepare superpositions of many two-mode coherent states for two cavity fields. The coherent states in each mode are on a straight line. This is the first way for preparing multi-component entangled coherent states of this type in cavity QED. 【总页数】4页(87-90)

【关键词】squeezed state;Raman interaction;entangled coherent state 【作者】ZHENG Sbi-Biao

【作者单位】Department of Electronic Science and Applied Physics, Fuzhou University, Fuzhou 350002, China