Entanglement generation and perfect state transfer in ferromagnetic qubit chains

Abstract

We propose to use ferromagnetic systems for entanglement generation and distribution together with perfect state transfer between distant parties in a qubit chain. The scheme relies on an effective 2-qubit dynamics, realized by leaving two empty sites in a uniformly filled chain. This allows long-range interacting qubit chains to serve as quantum channels for both tasks with optimal performances. Remarkably, the entanglement between sender and receiver sites is independent of both the transmission distance and of system size. This property opens new perspectives for short and mid-range quantum communication with qubit chains.

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Cited by in corpus (13)

• Coherent state transfer via highly mixed quantum spin chains
• Robust multipartite entanglement generation via a collision model
• Modular Entanglement
• High probability state transfer in spin-1/2 chains: Analytical and numerical approaches
• Perturbation Methods for Non-Markovian Quantum State Diffusion Equation
• The high probability state transfers and entanglements between different nodes of the homogeneous spin 1/2 chain in inhomogeneous external magnetic field
• Complete structural restoring of transferred multi-qubit quantum state
• Remote creation of a one-qubit mixed state through a short homogeneous spin-1/2 chain
• Transfer of 0-order coherence matrix along spin-1/2 chain
• Optimal remote restoring of quantum states in communication lines via local magnetic field
• Perfect transfer of arbitrary continuous variable states across optical waveguide lattices
• Expediting quantum state transfer through the long-range extended XY model
• Coherence restoring in communication line via controlled interaction with environment