Transfer of d-Level quantum states through spin chains by random swapping

Abstract

We generalize an already proposed protocol for quantum state transfer to spin chains of arbitrary spin. An arbitrary unknown $d-$ level state is transferred through a chain with rather good fidelity by the natural dynamics of the chain. We compare the performance of this protocol for various values of $d$. A by-product of our study is a much simpler method for picking up the state at the destination as compared with the one proposed previously. We also discuss entanglement distribution through such chains and show that the quality of entanglement transition increases with the number of levels $d$.

More discussion about the ground state has been added. Accepted in Physical Review A

References in corpus (6)

• Mirror Inversion of Quantum States in Linear Registers
• The Propagation of Quantum Information Through a Spin System
• From perfect to fractal transmission in spin chains
• Improved transfer of quantum information using a local memory
• Decoherence effects on the quantum spin channels
• Quantum Communication in Spin Systems With Long-Range Interactions

Cited by in corpus (4)

• Quantum Communication through Spin Chain Dynamics: an Introductory Overview
• Local controllability of quantum networks
• Iterative quantum state transfer along a chain of nuclear spin qubits
• Optimal 1->M universal quantum cloning via spin networks