论文标题
纯环境纠缠纯净的固定性：超精细相互作用
Qubit-environment entanglement outside of pure decoherence: hyperfine interaction
论文作者
论文摘要
在量子设备的基于自旋的架构中，电子自旋量子置矩与核自旋环境之间的超精细相互作用仍然是逆转的主要来源之一。本文简要审查了当前的量子反应动力学理论描述中的进步。接下来，我们以消极作为量度研究量子环境的纠缠。对于最初混合环境状态的最初混合状态，我们研究了消极动力学作为环境大小的函数，改变了环境核的数量和原子核的总自旋。此外，我们研究磁场对量子环境分解时间尺度的影响。
In spin-based architectures of quantum devices, the hyperfine interaction between the electron spin qubit and the nuclear spin environment remains one of the main sources of decoherence. This paper provides a short review of the current advances in the theoretical description of the qubit decoherence dynamics. Next, we study the qubit-environment entanglement using negativity as its measure. For an initial maximally mixed state of the environment, we study negativity dynamics as a function of environment size, changing the numbers of environmental nuclei and the total spin of the nuclei. Furthermore, we study the effect of the magnetic field on qubit-environment disentangling time scales.
