Open AccessThe scattering of two-mode squeezed vacuum state and entangled coherent state through a one-dimensional potential barrier
Author(s) -
Xing Chen,
YunJie Xia
Publication year - 2010
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.59.80
Subject(s) - quantum entanglement , physics , scattering , vacuum state , squeezed coherent state , quantum mechanics , transmission coefficient , rectangular potential barrier , state (computer science) , coherent states , transmission (telecommunications) , quantum , electrical engineering , engineering , algorithm , computer science
We analyze the one-dimensional potential barrier scattering problem of two-mode squeezed vacuum state and entangled coherent state. We show that the entanglement of both the scattering states exhibits a parabolic relation with the transmission coefficient of the barrier, and valley of the parabola corresponds with a semi-anti-semi-permeable barrier. In addition, the entanglement of the former has a similar parabolic relation with the incident squeezed factor, and the entanglement of the latter has a linear relation with the incident entanglement. The fidelities of both the scattering states increase as the transmission coefficient increases, but the former decreases as the incident squeezed factor increases and the latter decreases as the incident module of coherent state increases.