Wang Meijiao, Liu Haojie, Cao Lianzhen, Yang Yang, Liu Xia, Sun Bing, Zhao Jiaqiang
School of Physics and Electronic Information, Weifang University, Weifang 261061, China.
Entropy (Basel). 2025 Mar 27;27(4):350. doi: 10.3390/e27040350.
The study of system evolution in generalized amplitude damping is of great significance in quantum information science and quantum computing. As an important quantum noise channel, the generalized amplitude damping channel can describe the general phenomenon of the energy dissipation effect in quantum systems at finite temperature. In this paper, we study the use of weak measurement and reversal to protect the entanglement of X-type systems in generalized amplitude damping channels, and give an experimental scheme. The results show that the closer to zero the temperature environment, the better the protection effect of weak measurement and reversal, but the lower the success rate. Therefore, when choosing an experimental environment, it is important to consider not only the temperature factor but also the probability of success. Because all quantum systems work at finite temperatures, it is hoped that the study of generalized amplitude damping channels can help design more robust quantum algorithms and protocols to improve the efficiency and stability of quantum information processing.
广义振幅阻尼中系统演化的研究在量子信息科学和量子计算中具有重要意义。作为一个重要的量子噪声通道，广义振幅阻尼通道可以描述有限温度下量子系统中能量耗散效应的一般现象。在本文中，我们研究了利用弱测量和反转来保护广义振幅阻尼通道中X型系统的纠缠，并给出了一个实验方案。结果表明，温度环境越接近零，弱测量和反转的保护效果越好，但成功率越低。因此，在选择实验环境时，不仅要考虑温度因素，还要考虑成功概率。由于所有量子系统都在有限温度下工作，希望对广义振幅阻尼通道的研究能够帮助设计更鲁棒的量子算法和协议，以提高量子信息处理的效率和稳定性。
