Single photon decay of double hole states in atoms

M. Ya. Amusia, Larissa V. Chernysheva

M. Ya. Amus’ya, I. S. Li

Y. D. Chong, Marin Soljacic A

We derive the properties of polaritons in single-$\ensuremath{\Lambda}$ and double-$\ensuremath{\Lambda}$ media using a microscopic equation-of-motion technique. In each case, the polaritonic dispersion relation and composition arise from a matrix eigenvalue problem for arbitrary control field strengths. We show that the double-$\ensuremath{\Lambda}$ medium can be used to up- or down-convert single photons while preserving quantum coherence. The existence of a dark-state polariton protects this single-photon four-wave mixing effect against incoherent decay of the excited atomic states. The efficiency of this conversion is limited mainly by the sample size and the lifetime of the metastable state.

Viktor K. Dubrovich

Hou Bang-pin

When the intermediate level in a three-level-scheme atom is coupled to an excited and a ground levels by two control fields,respectively,the atomic system exhibits the phenomenon of double electromagnetically induced single-photon transparency.The absorption spectra are related to the Rabi frequencies of the two control fields and the non-radiative decay rate.

В. П. Крайнов, Boris Michailovich Smirnov