Entanglement distillation from Gaussian input states by coherent photon addition
Quantum Physics
2011-05-18 v3 Optics
Abstract
The entanglement between Gaussian entangled states can be increased by non-Gaussian operations. We design a new scheme named coherent photon addition, which can coherently add one photon generated by spontaneous parametric down conversation process to Gaussian quadrature-entangled light pulses created by a non-degenerate optical parametric amplifier. This operation can increase the entanglement of input two-mode Gaussian states as an entanglement distillation, and provides us a new method of non-Gaussian operation. This scheme can also help us to study the decoherence of adding one to two-mode Gaussian states from coherent photon addition to normal photon addition.
Keywords
Cite
@article{arxiv.0909.3282,
title = {Entanglement distillation from Gaussian input states by coherent photon addition},
author = {Pei Zhang and Hong-Rong Li and Hong Gao and Fu-Li Li},
journal= {arXiv preprint arXiv:0909.3282},
year = {2011}
}
Comments
5 pages, 1 figures