Transfers of entanglement qudit states in quantum networks

TL;DR

This paper explores the theoretical and numerical aspects of perfect quantum state transfer of entangled qudit states in spin chain networks, with implications for quantum communication and computing.

Contribution

It introduces a Hamiltonian model for transferring unknown qudit states and analyzes the possibility of perfect transfer of entangled states, including generalized Bell states.

Findings

Hamiltonian model enables transfer of unknown qudit states.

Numerical results show feasibility of entangled state transfer in noisy channels.

Analysis suggests potential for quantum communication applications.

Abstract

The issue of quantum states' transfer -- in particular, for so-called Perfect State Transfer (PST) -- in the networks represented by the spin chains seems to be one of the major concerns in quantum computing. Especially, in the context of future communication methods that can be used in broadly defined computer science. The chapter presents a definition of Hamiltonian describing the dynamics of quantum data transfer in one-dimensional spin chain, which is able to transfer the state of unknown qudits. The main part of the chapter is the discussion about possibility of entangled states' perfect transfer, in particular, for the generalized Bell states for qudits. One of the sections also contains the results of numerical experiments for the transmission of quantum entangled state in a noisy quantum channel.