论文标题
粒子内纠缠和随时间变化的违反贝尔在狄拉克物质中的不平等现象
Emergence of Intra-Particle Entanglement and Time-Varying Violation of Bell's Inequality in Dirac Matter
论文作者
论文摘要
我们证明了无质量迪拉克费米子中粒子内纠缠的出现和动力学。这种由自旋轨道耦合产生的纠缠是在石墨烯中电子的自旋和sublattice伪源之间产生的。纠缠是一个复杂的动态数量，但通常很大，与初始状态无关。它的时间依赖性意味着动态侵犯了铃铛不等式，而其幅度表明大粒子内纠缠是石墨烯在底物上的一般特征。这些特征还有望影响颗粒对之间的纠缠，并且可以在将库珀对分裂与基于狄拉克材料的介观设备中自旋旋转相关性的非本地测量的实验中检测到。
We demonstrate the emergence and dynamics of intra-particle entanglement in massless Dirac fermions. This entanglement, generated by spin-orbit coupling, arises between the spin and sublattice pseudospin of electrons in graphene. The entanglement is a complex dynamic quantity but is generally large, independent of the initial state. Its time dependence implies a dynamical violation of a Bell inequality, while its magnitude indicates that large intra-particle entanglement is a general feature of graphene on a substrate. These features are also expected to impact entanglement between pairs of particles, and may be detectable in experiments that combine Cooper pair splitting with nonlocal measurements of spin-spin correlation in mesoscopic devices based on Dirac materials.
