论文标题
量子相对熵表明单线 - 三重连贯性是生物磁传感的自由基对机理的资源
Quantum relative entropy shows singlet-triplet coherence is a resource in the radical-pair mechanism of biological magnetic sensing
论文作者
论文摘要
与生物磁场传感相关的激进对反应是证明量子生物学范式的理想系统，即复杂生物系统中量子共生效应的探索。我们在这里提供了这种生化旋转系统与量子信息科学之间的另一个基本联系。我们使用量子相对熵的概念介绍并探索了一种量化激进对的单线 - 三个三角形相干性的正式措施。量化单线三重奏相干性的能力在与自由基对的磁传感研究中打开了许多可能性。我们首先使用对单线 - 三个连贯性的显式量化来肯定地解决量子生物学的主要前提，即量子相干性为磁受伤提供了操作优势。其次，我们使用不一致的操作的概念表明，当激进对表现出电子核核纠缠时，核自旋的不一致的操作对单线 - 三曲线的连贯性可能会产生可怕的影响。最后，我们揭示了与交换相互作用及其在促进量子相干性中的作用相关的微妙效果。
Radical-pair reactions pertinent to biological magnetic field sensing are an ideal system for demonstrating the paradigm of quantum biology, the exploration of quantum coherene effects in complex biological systems. We here provide yet another fundamental connection between this biochemical spin system and quantum information science. We introduce and explore a formal measure quantifying singlet-triplet coherence of radical-pairs using the concept of quantum relative entropy. The ability to quantify singlet-triplet coherence opens up a number of possibilities in the study of magnetic sensing with radical-pairs. We first use the explicit quantification of singlet-triplet coherence to affirmatively address the major premise of quantum biology, namely that quantum coherence provides an operational advantage to magnetoreception. Secondly, we use the concept of incoherent operations to show that incoherent manipulations of nuclear spins can have a dire effect on singlet-triplet coherence when the radical-pair exhibits electronic-nuclear entanglement. Finally, we unravel subtle effects related to exchange interactions and their role in promoting quantum coherence.
