论文标题

量子信息在两部分量子状态中争夺和纠缠状态

Quantum Information Scrambling and Entanglement in Bipartite Quantum States

论文作者

Sharma, Kapil K., Gerdt, Vladimir P.

论文摘要

研究量子信息(QI)对物理系统中量子相关性的影响是一个有趣的问题。在本文中,我们建立了被称为量子信息的量化符,uhlmann fidelity,bures bures和二分之一并发的数学连接。我们通过用于量子信息争夺的四点外阶(OTOC)函数研究这些关系。此外,我们研究了所有量词的动力学,并研究了在贝尔州制备的两个量子位中Qi争夺对纠缠的影响。我们还确定了相关的Qi争夺和纠缠平衡点,并调查它们对Ising Hamiltonian的本质是周期性的。

Investigating the influence of quantum information (QI) scrambling on quantum correlations in a physical system is an interesting problem. In this article we establish the mathematical connections among the quantifiers known as quantum information scrambling, Uhlmann fidelity, Bures metric and bipartite concurrence. We study these relations via four point out-of-time-order correlation (OTOC) function used for quantum information scrambling. Further we study the dynamics of all the quantifiers and investigate the influence of QI scrambling on entanglement in two qubits prepared in Bell states. We also determine the related QI scrambling and entanglement balancing points and investigate that they are periodic in nature for the Ising Hamiltonian.

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