Emergence of Intra-Particle Entanglement and Time-Varying Violation of Bell's Inequality in Dirac Matter
arXiv:2007.01584 · doi:10.1103/PhysRevB.102.041403
Abstract
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.
6 pages, 3 figures
References in corpus (11)
- 2D materials and van der Waals heterostructures
- Measure of genuine multipartite entanglement with computable lower bounds
- Near-unity Cooper pair splitting efficiency
- Production and detection of entangled electron-hole pairs in a degenerate electron gas
- Choreographed entangle dances: topological states of quantum matter
- Cooper Pair Splitting by means of Graphene Quantum Dots
- Optimal spin-entangled electron-hole pair pump
- Spin correlation and entanglement detection in Cooper pair splitters by current measurements using magnetic detectors
- Lattice-layer entanglement in Bernal-stacked bilayer graphene
- Finite-temperature Bell test for quasiparticle entanglement in the Fermi sea
- Pseudospin entanglement and Bell test in graphene
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