Abstract
We investigate the dynamical behaviors of quantum-memory-assisted entropic uncertainty under the quantum-jump-based feedback control in open systems containing two qubits, and analyze the influence of feedback modes and coefficients on the entropic uncertainty. Numerical investigations indicate that: under quantum-jump-based feedback control, no matter whether qubits A and B are both or alone suffering from the environmental decoherence, when the feedback coefficient is the integer multiples of π/2, the entropic uncertainty of the system is a minimum value, which is far less than that without feedback control. As the dissipative coefficient γ decreases, namely the environmental decoherence decreases, the entropic uncertainty can be greatly improved under the quantum-jump-based feedback control.
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This work is supported by the National Natural Science Foundation of China under Grant Nos. 61663016 and 11404150.
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Hu, J., Ji, Y. Manipulating of the Entropic Uncertainty in Open Quantum System: Via Quantum-Jump-Based Feedback Control. Int J Theor Phys 59, 974–982 (2020). https://doi.org/10.1007/s10773-020-04385-5
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DOI: https://doi.org/10.1007/s10773-020-04385-5