Entanglement and nonclassicality of photon-added two-mode squeezed thermal state
Abstract
We introduce a kind of entangled state---photon-addition two-mode squeezed thermal state (TMSTS) by adding photons to each mode of the TMSTS. Using the P-representation of thermal state, the compact expression of the normalization factor is derived, a Jacobi polynomial. The nonclassicality is investigated by exploring especially the negativity of Wigner function. The entanglement is discussed by using Shchukin-Vogel criteria. It is shown that the photon-addtion to the TMSTS may be more effective for the entanglement enhancement than the photon-subtraction from the TMSTS. In addition, the quantum teleportation is also examined, which shows that symmetrical photon-added TMSTS may be more useful for quantum teleportation than the non-symmetric case.
Keywords
Cite
@article{arxiv.1203.0595,
title = {Entanglement and nonclassicality of photon-added two-mode squeezed thermal state},
author = {Li-Yun Hu and Fang Jia and Zhi-Ming Zhang},
journal= {arXiv preprint arXiv:1203.0595},
year = {2015}
}
Comments
11 pages, 7 figures