ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Giant Kerr nonlinearity induced by interacting quantum coherences from decays and incoherent pumping |
Bai Yan-Feng (白艳锋)a, Yang Wen-Xing (杨文星)a, Han Ding-An (韩定安)b, Yu Xiao-Qiang (喻小强 )a |
a Department of Physics, Southeast University, Nanjing 210096, China; b Department of Physics, Foshan University, Foshan 528000, China |
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Abstract A scheme for generating the giant enhancement of the Kerr nonlinearity in a four-level system with the quantum coherences from the decays and the incoherent pumping is proposed. Compared with that generated in a general four-level system, the Kerr nonlinearity can be enhanced by several orders of magnitude with vanishing linear absorption. By using the numerical results, we show that the remarkable enhancement should be attributed to the interaction of the quantum coherences from the decays and the incoherent pumping.
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Received: 16 February 2012
Revised: 25 April 2012
Accepted manuscript online:
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PACS:
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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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42.65.-k
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(Nonlinear optics)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10904015, 61008063, 11004030, and 11074036). |
Corresponding Authors:
Bai Yan-Feng
E-mail: yanfengbai@gmail.com
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Cite this article:
Bai Yan-Feng (白艳锋), Yang Wen-Xing (杨文星), Han Ding-An (韩定安), Yu Xiao-Qiang (喻小强 ) Giant Kerr nonlinearity induced by interacting quantum coherences from decays and incoherent pumping 2012 Chin. Phys. B 21 114208
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