The difference in noise property between the Autler-Townes splitting medium and the electromagnetically induced transparent medium |
| |
| Authors: | Li Zhong-Hua Li Yuan Dou Ya-Fang and Zhang Jun-Xiang |
| |
| Affiliation: | State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Opto-Electronics,Shanxi University,Taiyuan 030006,China |
| |
| Abstract: | The quantum noise of squeezed probe light passing through an atomic system with different electromagnetically induced transparency and Autler-Townes splitting effects is investigated theoretically.It is found that the optimal squeezing preservation of the outgoing probe beam occurs in the strong-coupling-field regime rather than in the weakcoupling-field regime.In the weak-coupling-field regime,which was recently recognized as the electromagnetically induced transparency regime(Abi-Salloum T Y 2010 Phys.Rev.A 81 053836),the output amplitude noise is affected mainly by the atomic noise originating from the random decay process of atoms.While in the strong-coupling-field regime,defined as the Autler-Townes splitting regime,the output amplitude noise is affected mainly by the phase-toamplitude conversion noise.This is useful in improving the quality of the experiment for efficient quantum memory,and hence has an application in quantum information processing. |
| |
| Keywords: | Autler Townes splitting electromagnetically induced transparency quantum noise |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
