Quantum and classical correlations in high temperature dynamics of two coupled large spins

V. E. Zobov

doi:10.1117/12.2016982

3 January 2013 Quantum and classical correlations in high temperature dynamics of two coupled large spins

V. E. Zobov

Proceedings Volume 8700, International Conference Micro- and Nano-Electronics 2012; 87001D (2013) https://doi.org/10.1117/12.2016982
Event: International Conference on Micro-and Nano-Electronics 2012, 2012, Zvenlgorod, Russian Federation

Abstract

We study dynamical correlations of two coupled large spins depending on the time and on the spin quantum numbers. In the high-temperature approximation, we obtain analytical expressions for the mutual informations, quantum and classical parts of correlations. The latter was obtained performing the non-orthogonal projective (POVM) measurements onto the spin coherent states of two spins or one spin, as well as by means of the orthogonal projective measurement of von Neumann. Contribution from quantum correlations is much less than that from classical ones and decreasing with the increase in spin quantum numbers at short times. However, it is not so in a time equal to half of the quantum period.

Citation Download Citation

V. E. Zobov "Quantum and classical correlations in high temperature dynamics of two coupled large spins", Proc. SPIE 8700, International Conference Micro- and Nano-Electronics 2012, 87001D (3 January 2013); https://doi.org/10.1117/12.2016982

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