Characterizing the dynamics of entropic uncertainty for multi-measurement
School of Physics and Material Science, Anhui University, Hefei, 230601, China
2 CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China
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Accepted: 3 June 2020
Published online: 10 June 2020
Uncertainty principle lies at the heart of quantum theory and is regarded as a vital property essentially differing from the rule in classical physics. We herein study the dynamics of the entropic uncertainty with regard to multi-measurement in the Markovian and non-Markovian regimes, respectively. We show that how non-Markovian and Markovian noises influence the dynamical evolutions of the measurement uncertainty and its bound. Moreover, we design a simple and valid method to decrease the uncertainty through pre-weak measurement and post-reversal measurement on the subsystems. Further, we offer the physical interpretations behind the uncertainty dynamics by the systemic quantum correlation. Finally, we apply the current observations on entanglement witness.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2020