Quantum correlation in dephasing decay and its effect on interference in three-level systems

Abstract

The quantum correlation in dephasing decay can be realized, when the energy fluctuations of transition frequencies are synchronized. The correlation in the three-level atom systems will enhance the interference in the absorption and change the nature of the interference, from destructive to constructive in cascade low-driving three-level atom and from constructive to destructive in V-type three-level atom. The quantum correlation is observed by properly introducing the collision or time-dependent magnetic field through the increase or decrease of the resonant absorption.

Keywords:

• Collision
• quantum correlation
• dephasing decay
• three-level atom
• constructive interference
• destructive interference

Acknowledgements

We thank DW Wang for helpful discussion.

Notes

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the National Basic Research Program of China [grant number 2012CB921603]; National Natural Science Foundation of China [grant number 11174026], [grant number U1330203].