Enhancement of entanglement transfer in a spin chain by phase shift-control

Abstract

We study the effect of a phase shift on the amount of transferrable two-spin entanglement in a spin chain. We consider a ferromagnetic Heisenberg/XY spin chain, both numerically and analytically, and two mechanisms to generate a phase shift, the Aharonov-Casher effect and the Dzyaloshinskii-Moriya interaction. In both cases, the maximum attainable entanglement is shown to be significantly enhanced, suggesting its potential usefulness in quantum information processing.

7 pages, 5 figures. v2: a fig added, the main text modified a bit

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• Quantum Communication through Spin Chain Dynamics: an Introductory Overview
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• Scalable quantum computation via local control of only two qubits
• Local quantum control of Heisenberg spin chains
• Measurement-based Synthesis of multi-qubit Entangled States in Superconducting Cavity QED
• Engineering correlation and entanglement dynamics in spin systems
• Perfect function transfer and interference effects in interacting boson lattices
• Universal Existence of Exact Quantum State Transmissions in Interacting Media
• Effect of perturbations on information transfer in spin chains
• Controlling qubit arrays with anisotropic XXZ Heisenberg interaction by acting on a single qubit
• Multipartite entanglement at dynamical quantum phase transitions with non-uniformly spaced criticalities
• Exact Calculation of Entanglement in a 19-site 2D Spin System
• Entanglement purification without controlled-NOT gates by using the natural dynamics of spin chains
• Phase boundaries in alternating field quantum XY model with Dzyaloshinskii-Moriya interaction: Sustainable entanglement in dynamics
• Quantum communication through anisotropic Heisenberg XY spin chains
• Dzyaloshinskii-Moriya and dipole-dipole interactions affect coupling-based Landau-Majorana-Stückelberg-Zener transitions
• Factorized Three-body S-Matrix Restrained by Yang-Baxter Equation and Quantum Entanglements
• Quantum correlation in three-qubit Heisenberg model with Dzyaloshinskii-Moriya interaction
• Entanglement generation in a quantum network with finite quantum memory lifetime
• Entanglement propagation through spin chains in the presence of a staggered magnetic field
• Non-Markovian entanglement dynamics in coupled superconducting qubit systems
• Characterization of partially accessible anisotropic spin chains in the presence of anti-symmetric exchange
• Tunable refraction in a two dimensional quantum metamaterial
• Quantum information diode based on a magnonic crystal
• Propagation of local excitations through strongly correlated quantum chains
• Sudden switch of generalized Lieb-Robinson velocity in a transverse field Ising spin chain
• Two Qubit Entanglement in $XYZ$ Magnetic Chain with DM Antisymmetric Anisotropic Exchange Interaction
• Ab-Initio Approach to Many-Body Quantum Spin Dynamics