Macroscopic superposition and entanglement for displaced thermal fields induced by a single atom
Quantum Physics
2012-03-08 v1 Optics
Abstract
We show that a cavity field can evolve from an initial displaced mixed thermal state to a macroscopic superpositions of displaced thermal states via resonant interaction with a two-level atom. As a macroscopic system (meter) is really in a mixed state before coupling with the microscopic system at some temperature, our result is important for studying the quantum measurement problem and decoherence under real conditions. For the two-mode case, entanglement of displaced thermal states between the modes can be obtained.
Cite
@article{arxiv.1203.1458,
title = {Macroscopic superposition and entanglement for displaced thermal fields induced by a single atom},
author = {Shi-Biao Zheng},
journal= {arXiv preprint arXiv:1203.1458},
year = {2012}
}