Triple-Stranded Metallo-Helicates Addressable as Lloyd’s Electron Spin Qubits

摘要

Quantum computers (QCs) and quantum information processingnsystems (QIPSs) are rapidly emerging in pure and applied sciences.n1nThe past few years have witnessed that the implementation of QCsQIPSs has become the focus of current topics in chemistry.n2,3nBuilding-up scalable quantum bits (qubits) in a controlled mannernis the most intractable issue to be solved for any physical systemnpursuing realistic practical QCs/QIPSs. Thus, implementation ofnscalable matter qubits is now a materials challenge for scientistsnfrom an experimental approach.n3nAmong matter qubits, molecularnelectron spin qubits can afford promise in implementing scalablenQCs/QIPSs, as relevant to an electron spin-qubit version of a Lloydn(ABC)n model.n4nLloyd’s proposal gives an alternative practicalnapproach to scalable QCs instead of implementing a vast numbernof addressable qubits. Lloyd’s models of electron spin qubits requirenspatial alignment of open-shell entities with nonequivalent g-tensorsnin appropriately designed molecular frames (termed g-tensornengineering).n3cnHowever, any experimental reports of Lloyd’snsystem have never been presented.