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Sub-Half-Wavelength Atom Localization Based on Phase-Dependent Electromagnetically Induced Transparency |
| GONG Cheng;HU Xiang-Ming;PENG Yan-Dong |
| Department of Physics, Huazhong Normal University, Wuhan 430079 |
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| Cite this article: |
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GONG Cheng, HU Xiang-Ming, PENG Yan-Dong 2008 Chin. Phys. Lett. 25 505-508 |
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Abstract We present a realistic and efficient scheme for sub-half-wavelength atom localization. This scheme is based on the phase-dependent lectromagnetically induced transparency in a four-level system in the double-λ configuration. We use a strong bichromatic field (one component of which is standing-wave field) as the driving components, and a weak bichromatic field as the probe components. By choosing the collective phase of the four applied components, the atom is localized in either of the two half-wavelength regions with 50%
detecting probability when the absorption to the probe fields is detected.
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| Keywords:
42.50.Gy
42.50.Pq
37.10.Vz
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Received: 11 October 2007
Published: 30 January 2008
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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.Pq
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(Cavity quantum electrodynamics; micromasers)
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37.10.Vz
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(Mechanical effects of light on atoms, molecules, and ions)
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