Since Yang-Baxter systems are easy to prepare and manipulate in quantum information experiments they are of increasing interest in the estimation of physical parameters. We investigate the dynamics of quantum Fisher information for the optimal estimation of parameters using two-qubit pure and different mixed states under action of the Yang-Baxter matrices. Although quantum Fisher information is monotonically decreasing under the action of a quantum channel, we have shown that mitigation of these decreases providing relative enhancements in quantum Fisher information is possible by means of Yang-Baxter matrices which model uniter quantum channels or noises.

中文翻译：

---

Yang-Baxter 系统中量子参数估计的增强

由于 Yang-Baxter 系统在量子信息实验中很容易准备和操作，因此它们对物理参数的估计越来越感兴趣。我们研究了量子 Fisher 信息的动力学，以便在 Yang-Baxter 矩阵的作用下使用双量子位纯态和不同混合态来优化参数估计。尽管量子 Fisher 信息在量子通道的作用下单调递减，但我们已经表明，通过对联合量子通道或噪声进行建模的 Yang-Baxter 矩阵，可以减轻这些降低，从而提供相对增强的量子 Fisher 信息。