Quantum Properties of a New Three-Mode Squeezed Vacuum State

Sijie Dai, Qingqian Kang, Liyun Hu +2 more

LU Dao-ming

卢道明 Lu Daoming

Wu Yan

A new three-mode squeezed vacuum state is proposed by the technique of integration with in an ordered product of operators. Its squeezing,antibunching and Cauchy-Schwartz inequality are analysed. The results indicate that it displays squeezing effect,but it does not play antibunching effect,sub-Poissonian of the field and the violation of Cauchy-Schwartz inequality of two-mode field.

Ts. Gantsog, R. Tanaś

Ryan T. Glasser, Wenlei Zhang, Erin M. Knutson +3 more

Multipartite entanglement is a key resource for various quantum information tasks. Here, we present multiple schemes for multimode entanglement and squeezing via nonlinear optical processes. We define a new "coupled three-mode squeezed vacuum" state. Non-intuitive behaviors arise in intensity squeezing between two of the three output modes due to the coupling. We also show that this state can be genuinely tripartite entangled, and extend the work to a four-mode output system.