Robust state transfer and rotation through a spin chain via dark passage

TL;DR

This paper proposes a robust quantum state transfer and single qubit rotation method through a spin chain using adiabatic dark passage, resilient to control fluctuations and environmental noise, applicable to chains longer than three spins.

Contribution

It introduces a novel adiabatic dark passage technique for robust quantum state transfer and rotation in spin chains, extending applicability beyond three spins.

Findings

Robustness against control field fluctuations

Effective for spin chains longer than three spins

Enables single qubit rotation using dark passage

Abstract

Quantum state transfer through a spin chain via adiabatic dark passage is proposed. This technique is robust against control field fluctuations and unwanted environmental coupling of intermediate spins. Our method can be applied to spin chains with more than three spins. We also propose single qubit rotation using this technique.