Transfer of quantum correlations from light to atoms in the case of irreversible evolution |
| |
Authors: | V N Gorbachev and A I Trubilko |
| |
Institution: | 1.State University of Aerospace Instrumentation,St. Petersburg,Russia |
| |
Abstract: | We consider the irreversible dynamics of two two-level atoms that interact with a bipartite broad-band electromagnetic field
in an entangled state that forms a heat bath with a quantum correlation. Using Ito’s stochastic integration technique, we
have derived a kinetic equation for atoms and found their steady state, which turns out to be inseparable and leads to a violation
of Bell’s inequalities. The application of the atomic state found as a quantum channel for teleportation is considered. We
have calculated the channel quality or fidelity that determines the possibilities for using the channel, in particular, characterizes
its security. The process of teleportation by means of a quantum channel formed by an entangled heat bath is considered. Comparison
of two (atomic and light) channels has shown that they have different properties with regard to separability and identical
properties with regard to nonlocality. This means that nonlocality can be completely transferred from light to atoms. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|