| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Nonadiabatic Effects of Atomic Coherence on Laser Intensity Fluctuations in Electromagnetically Induced Transparency |
| XU Qing1,2, HU Xiang-Ming1**
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1College of Physical Science and Technology, Huazhong Normal University, Wuhan 430079
2College of Physical Science and Technology, Huanggang Normal University, Huanggang 438000
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| Cite this article: |
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XU Qing, HU Xiang-Ming 2011 Chin. Phys. Lett. 28 074217 |
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Abstract In an electromagnetically induced transparency system, the atoms have long-lived coherence compared to the cavity lifetime and interact nonadiabatically with the laser fields. We show that the high frequency fluctuations of both the intensities and the intensity difference can be squeezed below the shot noise limit due to the nonadiabatic effects. This noise squeezing can be used to enhance the precision in the short time measurements based on the intensities or the intensity difference.
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| Keywords:
42.50.Gy
42.50.Lc
42.50.Pq
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Received: 18 January 2011
Published: 29 June 2011
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| PACS: |
42.50.Gy
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(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
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42.50.Lc
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(Quantum fluctuations, quantum noise, and quantum jumps)
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42.50.Pq
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(Cavity quantum electrodynamics; micromasers)
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