Information-capacity description of spin-chain correlations
Vittorio Giovannetti, Rosario Fazio · Physical Review A · 2005
Information capacities achievable in the multi-parallel-use scenarios are employed to characterize the quantum correlations in unmodulated spin chains. By studying the qubit amplitude damping channel, we calculate the quantum capacity $Q$, the entanglement assisted capacity ${C}_{E}$, and the classical capacity ${C}_{1}$ of a spin chain with ferromagnetic Heisenberg interactions.