Quantum state transfer is a procedure, which allows to exchange quantum information between stationary qubit systems. It is anticipated that the transfer will find applications in solid-state quantum computing. In this contribution, we discuss the effects of various, physically relevant models of decoherence on a toy model of six qubit linearly coupled by the exchange interaction. In many cases we observe the advantage of the two-qubit encoding, which can be associated with the fact that this encoding does not require the state initialization.
@article{arxiv.0905.0387,
title = {One-Qubit and Two-Qubit Codes in Noisy State Transfer},
author = {Marcin Markiewicz and Marcin Wieśniak},
journal= {arXiv preprint arXiv:0905.0387},
year = {2009}
}