Detection of bound entanglement in continuous variable systems

Cheng-Jie Zhang, Hyunchul Nha, Yong-Sheng Zhang, Guang-Can Guo

Published 2010-06-08, updated 2010-09-27Version 3

We present several entanglement conditions in order to detect bound entangled states in continuous variable systems. Specifically, Werner and Wolf [Phys. Rev. Lett. 86, 3658 (2001)] and Horodecki and Lewenstein [Phys. Rev. Lett. 85, 2657 (2000)] have proposed examples of bound entangled Gaussian state and bound entangled non-Gaussian state, respectively, of which entanglement can be detected by using our entanglement conditions.