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Modelling Conformational Flexibility in a Spectrally Addressable Molecular Multi-Qubit Model System

, Ciarán J. Rogers, Adam Brookfield, Dr. Alessandro Chiesa, Dr. Grigore A. Timco, Prof. David Collison, Dr. Louise S. Natrajan, Prof. Stefano Carretta, Prof. Richard E. P. Winpenny, Dr. Alice M. Bowen
Published in Wiley
Volume: 61
Issue: 45

Dipolar coupled multi-spin systems have the potential to be used as molecular qubits. Herein we report the synthesis of a molecular multi-qubit model system with three individually addressable, weakly interacting, spin urn:x-wiley:14337851:media:anie202207947:anie202207947-math-0001 centres of differing g-values. We use pulsed Electron Paramagnetic Resonance (EPR) techniques to characterise and separately address the individual electron spin qubits; CuII, Cr7Ni ring and a nitroxide, to determine the strength of the inter-qubit dipolar interaction. Orientation selective Relaxation-Induced Dipolar Modulation Enhancement (os-RIDME) detecting across the CuII spectrum revealed a strongly correlated CuII-Cr7Ni ring relationship; detecting on the nitroxide resonance measured both the nitroxide and CuII or nitroxide and Cr7Ni ring correlations, with switchability of the interaction based on differing relaxation dynamics, indicating a handle for implementing EPR-based quantum information processing (QIP) algorithms.

About the journal
JournalData powered by TypesetAngewandte Chemie - International Edition
PublisherData powered by TypesetWiley
Open AccessYes