Measurement uncertainty and dense coding in a two-qubit system: Combined effects of bosonic reservoir and dipole–dipole interaction

Results in Physics

Youssef Khedif¹  Ming-Liang Hu²  Saeed Haddadi³  Mohammad Reza Pourkarimi⁴  Mohammed Daoud⁵  Hazhir Dolatkhah⁶ 

[1] Corresponding author at: Faculty of Physics, Semnan University, P.O. Box 35195-363, Semnan, Iran.;Saeed’s Quantum Information Group, P.O. Box 19395-0560, Tehran, Iran;Faculty of Physics, Semnan University, P.O. Box 35195-363, Semnan, Iran;Laboratory of High Energy and Condensed Matter Physics, Department of Physics, Faculty of Sciences Aïn Chock, University Hassan II, P.O. Box 5366 Maarif Casablanca 20100, Morocco;RCQI, Institute of physics, Slovak Academy of Sciences, Dúbravská Cesta 9, 84511 Bratislava, Slovakia;School of Science, Xi’an University of Posts and Telecommunications, Xi’an 710121, China;

关键词: Uncertainty relation;    Dense coding;    Bosonic reservoir;    Dipole–dipole interaction;   

DOI  :  

来源: DOAJ

【 摘 要 】

The uncertainty principle imposes a limitation on the measurement accuracy of two incompatible observables and has potential applications in quantum information science. We explore the bipartite entropic uncertainty relation and dense coding for two qubits coupled via dipole–dipole interaction and subject to a bosonic reservoir. It is shown that there exists a trade-off between the uncertainty bound and the dense coding capacity which results in their opposite dynamical behaviors. Moreover, the behaviors of the measurement uncertainty and the dense coding capacity rely crucially on the initial system–reservoir correlation, the strength of the dipole–dipole interaction, and the degree of non-Markovianity, and one can reduce the measurement uncertainty and enhance the dense coding capacity by tuning these parameters to appropriate values.

【 授权许可】

Unknown