Asymmetric Transport in Long-Range Interacting Chiral Spin Chains
arXiv:2108.07738 · doi:10.21468/SciPostPhysCore.5.2.021
Abstract
Harnessing power-law interactions () in a large variety of physical systems are increasing. We study the dynamics of chiral spin chains as a possible multi-directional quantum channel. This arises from the nonlinear character of the dispersion with complex quantum interference effects. Using complementary numerical and analytical techniques, we propose a model to guide quantum states to a desired direction. We illustrate our approach using the long-range XXZ model modulated by Dzyaloshinskii-Moriya (DM) interaction. By exploring non-equilibrium dynamics after a local quantum quench, we identify the interplay of interaction range and Dzyaloshinskii-Moriya coupling giving rise to an appreciable asymmetric spin excitations transport. This could be interesting for quantum information protocols to transfer quantum states, and it may be testable with current trapped-ion experiments. We further explore the growth of block entanglement entropy in these systems, and an order of magnitude reduction is distinguished.
8 pages including 9 multi-panel figures; Resubmission to SciPost with several corrections, improvements, and updates
References in corpus (9)
- The density-matrix renormalization group in the age of matrix product states
- Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
- Spin current and magneto-electric effect in non-collinear magnets
- Observation of Majorana Fermions in Ferromagnetic Atomic Chains on a Superconductor
- Observation of mesoscopic crystalline structures in a two-dimensional Rydberg gas
- Distinguishing a Majorana zero mode using spin resolved measurements
- Coherent many-body spin dynamics in a long-range interacting Ising chain
- Spreading of Correlations and Entanglement in the Long-Range Transverse Ising Chain
- Quantum Chaos in the Heisenberg Spin Chain: the Effect of Dzyaloshinskii-Moriya Interaction