近日，内蒙古科技大学的马永红教授及其研究团队取得一项新进展。他们揭示了非马尔可夫热环境下硅-空位中心量子系统的自旋压缩。相关研究成果已于2024年11月19日在国际知名学术期刊《物理评论A》上发表。

该研究团队研究了在有限温度非马尔可夫环境下，由硅空位色心（SiV）和金刚石声波导构成的混合量子系统中自旋压缩的产生。结果表明，记忆参数、阻尼率、环境温度以及总自旋数在自旋压缩的产生中起着关键作用。通过适当调节这些参数，可以显著增强量子系统的自旋压缩效应。

本研究为量子系统在量子信息处理、量子精密测量等复杂环境中的应用提供了理论基础和优化策略。

据悉，自旋压缩作为多粒子纠缠的一种引人注目的表现，被视为最有前景的量子资源之一。非马尔可夫特性在许多涉及强系统-环境相互作用的关键物理过程中，起着至关重要的作用。

附：英文原文

Title: Spin squeezing in silicon-vacancy-center quantum systems with a non-Markovian thermal environment

Author: Ying Xi, Jian-Zhuang Wu, Bo-Ya Li, Lian-E Lu, Feng-Ze Cao, Yong-Hong Ma

Issue&Volume: 2024/11/19

Abstract: Spin squeezing, a compelling manifestation of multiparticle entanglement, is considered one of the most promising quantum resources. Non-Markovian characteristics play a crucial role in many critical physical processes involving strong system-environment interactions. We investigate the generation of spin squeezing in a hybrid quantum system composed of silicon-vacancy color centers (SiV) and diamond acoustic waveguides in a finite-temperature non-Markovian environment. The results indicate that memory parameters, damping rates, environmental temperature, and the total spin number play critical roles in the generation of spin squeezing. By appropriately tuning these parameters, the spin-squeezing effect of the quantum system can be significantly enhanced. This study provides theoretical foundations and optimization strategies for the application of quantum systems in complex environments, such as quantum information processing and quantum precision measurement.

DOI: 10.1103/PhysRevA.110.052610

Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.110.052610