Darkness of two-mode squeezed light in {\Lambda}-type atomic system
Abstract
We show that, under certain circumstances, an optical field in a two-mode squeezed vacuum (TMSV) state can propagate through a lossy atomic medium without degradation or evolution. Moreover, the losses give rise to that state when a different state is initially injected into the medium. Such a situation emerges in a {\Lambda}-type atomic system, in which both optical transitions are driven by strong laser fields that are two-photon resonant with the respective signal modes. Then the interactions of the two signal modes with the ground-state atomic coherence interfere destructively, thereby ensuring the preservation of the TMSV with a particular squeezing parameter. This mechanism permits unified interpretation of recent experimental results and predicts new phenomena.
Cite
@article{arxiv.1803.08911,
title = {Darkness of two-mode squeezed light in {\Lambda}-type atomic system},
author = {E. S. Moiseev and Arina Tashchilina and S. A. Moiseev and A. I. Lvovsky},
journal= {arXiv preprint arXiv:1803.08911},
year = {2021}
}