Broadcasting of continuous-variable entanglement

被引：7
|
作者：
Adhikari, Satyabrata [1 ]
Majumdar, A. S. [1 ]
Nayak, N. [1 ]
机构：
[1] SN Bose Natl Ctr Basic Sci, Kolkata 700098, India
来源：
PHYSICAL REVIEW A | 2008年 / 77卷 / 04期
关键词：
D O I：
10.1103/PhysRevA.77.042301
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present an example for broadcasting of the entanglement of a two-mode squeezed state of the electromagnetic field shared by two distant parties into two nonlocal bipartite entangled states. Using the technique of covariance matrices we demonstrate the entanglement between the nonlocal output modes and the separability of the local output modes. We find the range of values for the squeezing parameter and the amplifier phase for which broadcasting of continuous-variable entanglement can be implemented for physical states.
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页数：5
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