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Parametric conversion and maximally entangled photon pair via collective excitations in a cycle atomic ensemble
Authors:J Li  R Yu
Institution:a Optics Center, School of Physics, Huazhong University of Science and Technology (HUST), Wuhan 430074, People's Republic of China
b School of Science, Wuhan Institute of Technology, Wuhan 430073, People's Republic of China
Abstract:We study the propagation of two quantized optical fields via considering the collective effects of photonic emissions and excitations of a three-level cyclic-type system (such as atomic ensemble with symmetry broken, or the chiral molecular gases, or manual “atomic” array with symmetry broken), where the quantum transitions is driven by two quantized fields and a classical one. The results show that the parametric conversion and maximally entangled photon pair generation can be achieved by means of the collective excitation of the two upper energy levels induced by the classic optical field. This investigation may be used for the generated coherent short-wavelength quantum radiation and quantum information processing.
Keywords:42  50  Gy  42  65  Ky  42  50  Dv
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