Adiabatic state distribution using anti-ferromagnetic spin systems

Koen Groenland

SciPost Phys. 6, 011 (2019) · published 23 January 2019

Abstract

Transporting quantum information is an important prerequisite for quantum computers. We study how this can be done in Heisenberg-coupled spin networks using adiabatic control over the coupling strengths. We find that qudits can be transferred and entangled pairs can be created between distant sites of bipartite graphs with a certain balance between the maximum spin of both parts, extending previous results that were limited to linear chains. The transfer fidelity in a small star-shaped network is numerically analysed, and possible experimental implementations are discussed.


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Antiferromagnets Heisenberg spin chains Quantum information

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