Suppressing measurement uncertainty in an inhomogeneous spin star system

被引：11
作者：
Haddadi, Saeed [1 ]
Ghominejad, Mehrdad [1 ]
Akhound, Ahmad [2 ]
Pourkarimi, Mohammad Reza [3 ]
机构：
[1] Semnan Univ, Fac Phys, POB 35195-363, Semnan, Iran
[2] Payame Noor Univ, Dept Phys, POB 19395-3697, Tehran, Iran
[3] Salman Farsi Univ Kazerun, Dept Phys, Kazerun, Iran
来源：
SCIENTIFIC REPORTS | 2021年 / 11卷 / 01期
关键词：
TRIPARTITE ENTROPIC UNCERTAINTY; QUANTUM COHERENCE; ENTANGLEMENT; DYNAMICS; PRINCIPLE; MEMORY; CHAIN;
D O I：
10.1038/s41598-021-02045-0
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The uncertainty principle is known as a foundational element of quantum theory, providing a striking lower bound to quantify our prediction for the measured result of two incompatible observables. In this work, we study the thermal evolution of the entropic uncertainty bound in the presence of quantum memory for an inhomogeneous four-qubit spin-star system that is in the thermal regime. Intriguingly, our results show that the entropic uncertainty bound can be controlled and suppressed by adjusting the inhomogeneity parameter of the system.
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页数：11
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