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.
Intraparticle entanglement-based Random Access Code protocols: Contextuality-enabled quantum advantage and implications
Indian Institute of Science Education & Research (IISER), Mohali（印度科学教育研究学院（Mohali））；Korea Research Institute of Standards & Science (KRISS)（韩国标准科学研究院）；S. N. Bose National Center for Basic Sciences（S.N. 玻色基础科学国家中心）；Raman Research Institute (RRI)（拉曼研究所）；Bose Institute（玻色研究所）
Spin Teleportation via Bell-Triplet States Emergent from Proton-Proton Scattering
Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University（复旦大学现代物理研究所核物理与离子束应用教育部重点实验室）；Shanghai Research Center for Theoretical Nuclear Physics, NSFC and Fudan University（复旦大学及国家自然科学基金委上海理论物理研究中心）；School of Physics, East China Normal University（华东师范大学物理系）；College of Mechanics and Engineering Science, Hohai University（河海大学力学与工程科学学院）
Multirate characterization of relaxation mechanisms for two nonequivalent nuclear spins 1/2 in a liquid using maximally entangled pseudo-pure quantum states
Felix Bloch Institute for Solid State Physics, University of Leipzig（莱比锡大学菲利克斯·布洛赫固体物理研究所）；Moscow Institute of Physics and Technology（莫斯科物理技术学院）；Institute for Theoretical Physics, University of Leipzig（莱比锡大学理论物理研究所）
