| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1538040 | Optics Communications | 2009 | 5 Pages |
Abstract
The production of quadripartite continuous-variable entanglement, with different frequency, is analyzed theoretically. This process is realized by parametric amplifier cascaded with a sum frequency generation in a quasiperiodically optical supperlattice, meanwhile, the nondegenerated optical parametric amplifier operated above threshold and the injection signal field with very small intensity is in coherent state. It shows that the four-partite of the pump, two subharmonic and the up-converted modes from the cavity is genuinely entangled according to the sufficient inseparability criterion proposed by Van Loock and Furusawa. Moreover, the entanglement characteristics versus different parameters are discussed as well in detail.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
J.F. Wang, X.Q. Yu, Y.B. Yu, P. Xu, Z.D. Xie, H.Y. Leng, S.N. Zhu,