Reversible storage of a weak light pulse optimized by spontaneously generated coherence

Abstract

We investigate the storage and retrieval of a weak light pulse in a $\mathrm{\Lambda }$-type three-level atomic gas medium with spontaneously generated coherence and pumped by an incoherent field. The scheme works based on electromagnetically induced transparency and can promote retrieval efficiency. We show how to make the combination choice of the system parameters required not only for the perfect retrieval operation but also for the high atom-field coupling efficiency.

Keywords:

• reversible storage
• electromagnetically induced transparency
• spontaneously generated coherence

Additional information

Funding

This research was supported by the National Natural Science Foundation of China [grant number 11304174]; Natural Science Foundation of Shandong Province [grant number ZR2013AQ010]; the Science and Technology Program of High Education of Shandong [grant number J11LG07]; and the Qingdao Science and Technology Program Fundamental Research [grant number 12-1-4-4-(6)-GCH].