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Entropic uncertainty lower bound for a two-qubit system coupled to a spin chain with Dzyaloshinskii–Moriya interaction

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Abstract

The uncertainty principle is one of the key concepts in quantum theory. This principle states that it is not possible to measure two incompatible observables simultaneously and accurately. In quantum information theory, the uncertainty principle is formulated using the concept of entropy. In this work we consider the entropic uncertainty relation in the presence of quantum memory. We study the dynamics of entropic uncertainty bound for a two-qubit quantum system coupled to a spin chain with Dzyaloshinskii–Moriya interaction and we investigate the effect of environmental parameters on the entropic uncertainty bound. Notably, our results reveal that there exist some environmental parameters which can be changed to suppress the entropic uncertainty bound.

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Authors and Affiliations

  1. Faculty of Physics, Urmia University of Technology, Urmia, Iran

    Soroush Haseli

  2. Faculty of Physics, Semnan University, P.O.Box 35195-363, Semnan, Iran

    Saeed Haddadi

  3. Saeed’s Quantum Information Group, P.O.Box 19395-0560, Tehran, Iran

    Saeed Haddadi

  4. Department of Physics, Salman Farsi University of Kazerun, Kazerun, Iran

    Mohammad Reza Pourkarimi

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  1. Soroush Haseli
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Haseli, S., Haddadi, S. & Pourkarimi, M.R. Entropic uncertainty lower bound for a two-qubit system coupled to a spin chain with Dzyaloshinskii–Moriya interaction. Opt Quant Electron 52, 465 (2020). https://doi.org/10.1007/s11082-020-02589-x

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