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Reducing the Entropic Uncertainty via Non-Markovian Effect and Detuning in the Presence of Quantum Memory ∗

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Abstract

The influence of non-Markovian effect and detuning on the entropic uncertainty in the presence of quantum memory is studied by the time-convolutionless master-equation approach. The result shows that the entropic uncertainty in the presence of quantum memory is obviously dependent on both detuning and non-Markovian effect. The bigger the detuning is and the stronger the non-Markovian effect is, the smaller the entropic uncertainty is. Its physical explanation is that the known quantum information stored in the quantum memory can reduce or eliminate the entropic uncertainty about the measurement outcomes of another particle, which is entangled with the quantum memory.

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Authors and Affiliations

  1. Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, College of Physics and Information Science, Hunan Normal University, Changsha, 410081, China

    Hong-Mei Zou, Mao-Fa Fang, Bai-Yuan Yang, You-Neng Guo, Wei He & Shi-Yang Zhang

Authors
  1. Hong-Mei Zou
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  2. Mao-Fa Fang
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  3. Bai-Yuan Yang
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  4. You-Neng Guo
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  5. Wei He
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  6. Shi-Yang Zhang
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Corresponding author

Correspondence to Mao-Fa Fang.

Additional information

Project Supported by the Natural Science Foundation of Hunan Province,China (Grant no. 09JJ5001), the Science and Technology Plan of Hunan Province,China (Grant no. 2010FJ3148) and the National Natural Science Foundation of China (Grant No.10374025; Grant No.11374096).

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Zou, HM., Fang, MF., Yang, BY. et al. Reducing the Entropic Uncertainty via Non-Markovian Effect and Detuning in the Presence of Quantum Memory ∗ . Int J Theor Phys 53, 4302–4309 (2014). https://doi.org/10.1007/s10773-014-2180-z

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  • DOI: https://doi.org/10.1007/s10773-014-2180-z

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