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Temporal evolution of quantum correlations under non-Hermitian operation

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Abstract

In this article, we investigate the non-unitary dynamics of a two-qubit system under the action of local non-Hermitian operation from the perspectives of quantum correlations. The correlations are quantified by entanglement, maximal Bell function and different versions of measurement-induced nonlocality (MIN). The analysis is carried out for different initial conditions. We show the advantages of MIN in capturing the nonlocal aspects of the mixed quantum states over the entanglement and Bell function. Interestingly, by proper tuning of the system’s parameter, one can observe the stationary quantum correlations under this non-Hermitian circumstance which have potential applications in quantum information processing and quantum computation.

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Acknowledgements

JRP thanks the Department of Science and Technology, Government of India, for providing an INSPIRE Fellowship No. DST/INSPIRE Fellowship/2017/ IF170539. The work of VKC forms part of the research projects sponsored SERB-DST-MATRICS Grant No. MTR/2018/000676 and CSIR Project Grant No. 03(1444)/18/ EMR-II. JRP, and VKC wish to thank DST, New Delhi for computational facilities under the DST-FIST programme (SR/FST/PS-1/2020/135) to the Department of Physics.

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Authors and Affiliations

  1. Department of Physics, Centre for Nonlinear Science & Engineering, School of Electrical & Electronics Engineering, SASTRA Deemed University, Thanjavur, Tamilnadu, 613 401, India

    J. Ramya Parkavi & V. K. Chandrasekar

  2. Department of Physics, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Br̆ehová 7, 115 19, Praha 1-Staré Mĕsto, Czech Republic

    R. Muthuganesan

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  1. J. Ramya Parkavi
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Correspondence to V. K. Chandrasekar.

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Parkavi, J.R., Muthuganesan, R. & Chandrasekar, V.K. Temporal evolution of quantum correlations under non-Hermitian operation. Opt Quant Electron 54, 729 (2022). https://doi.org/10.1007/s11082-022-04152-2

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