论文标题
XXZ Heisenberg模型中相关相干性和量子不和谐的固有破坏作用
Intrinsic decoherence effects on correlated coherence and quantum discord in XXZ Heisenberg model
论文作者
论文摘要
旋转量表是量子处理器技术进步的核心，并为量子信息处理提供了绝佳的框架。这项工作表征了两旋XXZ海森贝格模型中相干性和非经典相关性的时间演变，从中实现了两个Qubit的系统。我们研究了内在的反应对相干性（相关相关性）和非经典相关性（量子不和谐）的影响，考虑到外部磁场，Dzyaloshinsky-Moriya（DM）和Kaplan Shekhtman Shekhtman Entin-Wohlman-Wohlman-Wohlman-Aharony（KSEA）的相互作用的综合影响。为了充分理解内在的破坏性的影响，我们认为该系统可以在两个众所周知的延伸器样（EWL）状态之一中制备。研究结果表明，固有的破坏性导致连贯性和量子相关性导致衰减，并且上述量子资源的行为强烈依赖于初始的EWL状态参数。我们同样，我们发现两旋相关的连贯性和量子不一致。根据初始状态的类型，对内在的破裂性变得更加强大。这些结果阐明了应如何设计量子系统以实现量子优势。
Spin qubits are at the heart of technological advances in quantum processors and offer an excellent framework for quantum information processing. This work characterizes the time evolution of coherence and nonclassical correlations in a two-spin XXZ Heisenberg model, from which a two-qubit system is realized. We study the effects of intrinsic decoherence on coherence (correlated coherence) and nonclassical correlations (quantum discord), taking into consideration the combined impact of an external magnetic field, Dzyaloshinsky-Moriya (DM) and Kaplan Shekhtman Entin-Wohlman-Aharony (KSEA) interactions. To fully understand the effects of intrinsic decoherence, we suppose that the system can be prepared in one of the two well-known extended Werner-like (EWL) states. The findings show that intrinsic decoherence leads the coherence and quantum correlations to decay and that the behavior of the aforementioned quantum resources relies strongly on the initial EWL state parameters. We, likewise, found that the two-spin correlated coherence and quantum discord; become more robust against intrinsic decoherence depending on the type of the initial state. These outcomes shed light on how a quantum system should be engineered to achieve quantum advantages.
