Khalil E M, Berrada K, Abdel-Khalek S, Al-Barakaty A, Peřina J
Department of Mathematics and Statistics, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia.
Mathematics Department, Faculty of Science, Azhar University, Cairo, Egypt.
Sci Rep. 2020 Nov 11;10(1):19600. doi: 10.1038/s41598-020-76059-5.
We study the dynamics of two non-stationary qubits, allowing for dipole-dipole and Ising-like interplays between them, coupled to quantized fields in the framework of two-mode pair coherent states of power-low potentials. We focus on three particular cases of the coherent states through the exponent parameter taken infinite square, triangular and harmonic potential wells. We examine the possible effects of such features on the evolution of some quantities of current interest, such as population inversion, entanglement among subsystems and squeezing entropy. We show how these quantities can be affected by the qubit-qubit interaction and exponent parameter during the time evolution for both cases of stationary and non-stationary qubits. The obtained results suggest insights about the capability of quantum systems composed of nonstationary qubits to maintain resources in comparison with stationary qubits.
我们研究了两个非定态量子比特的动力学，考虑了它们之间的偶极 - 偶极相互作用和类伊辛相互作用，并在幂次低势的双模对相干态框架下将它们耦合到量子化场。我们通过取指数参数为无穷大的方形、三角形和谐波势阱来关注相干态的三种特殊情况。我们研究了这些特征对当前一些感兴趣的量的演化可能产生的影响，例如布居反转、子系统间的纠缠和压缩熵。我们展示了在定态和非定态量子比特的两种情况下，这些量在时间演化过程中如何受到量子比特 - 量子比特相互作用和指数参数的影响。所得结果为与定态量子比特相比，由非定态量子比特组成的量子系统维持资源的能力提供了见解。
