Selective dynamical decoupling for quantum state transfer

TL;DR

This paper introduces selective dynamical decoupling schemes that enhance quantum state transfer fidelity in imperfect networks, demonstrated through numerical simulations on a bent linear qubit chain.

Contribution

The paper proposes novel selective dynamical decoupling methods to improve quantum state transfer in imperfect networks, specifically addressing errors in bent linear qubit chains.

Findings

Decoupling schemes effectively suppress errors in quantum state transfer.

Numerical simulations confirm improved fidelity in realistic scenarios.

Schemes are efficient in stabilizing transfer protocols despite imperfections.

Abstract

State transfer across discrete quantum networks is one of the elementary tasks of quantum information processing. Its aim is the faithful placement of information into a specific position in the network. However, all physical systems suffer from imperfections, which can severely limit the transfer fidelity. We present selective dynamical decoupling schemes which are capable of stabilizing imperfect quantum state transfer protocols on the model of a bent linear qubit chain. The efficiency of the schemes is tested and verified in numerical simulations on a number of realistic cases. The simulations demonstrate that these selective dynamical decoupling schemes are capable of suppressing unwanted errors in quantum state transfer protocols efficiently.