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Measuring the Wigner Functions of Two-Mode Cavity Fields and Testing the Bell’s Inequalities |
| ZHANG Zhi-Ming |
| Department of Physics, Shanghai Jiao Tong University, Shanghai 200240
Max-Planck-Institute for Quantum Optics, Hans-Kopfermann-Str.1, D-85748 Garching, Germany |
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| Cite this article: |
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ZHANG Zhi-Ming 2004 Chin. Phys. Lett. 21 5-8 |
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Abstract We propose a scheme for measuring the Wigner function of a two mode cavity field. The scheme bases on the interaction between the two-mode cavity field and three-level atoms. We find a simple relation between the Wigner function and the atomic population. One can obtain the Wigner function by measuring the atomic population with a micromaser-like experiment and doing a numerical integral. By using the two-mode Wigner function one can obtain the Clauser--Horne combination and test the Bell's inequalities. We test our equations with a two-mode entanglement state and the results are rather good.
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03.65.Ta
03.65.Wj
42.50.Dv
42.50.Ct
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Published: 01 January 2004
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| PACS: |
03.65.Ta
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(Foundations of quantum mechanics; measurement theory)
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03.65.Wj
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(State reconstruction, quantum tomography)
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42.50.Dv
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(Quantum state engineering and measurements)
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42.50.Ct
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(Quantum description of interaction of light and matter; related experiments)
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