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Probing the Design Rules for Optimizing Electron Spin Relaxation in Densely Packed Triplet Media for Quantum Applications.
ACS Mater Lett
January 2025
Department of Materials and London Centre for Nanotechnology, Imperial College London, South Kensington Campus, Exhibition Road, SW7 2AZ London, United Kingdom.
Quantum technologies using electron spins have the advantage of employing chemical qubit media with tunable properties. The principal objective of material engineers is to enhance photoexcited spin yields and quantum spin relaxation. In this study, we demonstrate a facile synthetic approach to control spin properties in charge-transfer cocrystals consisting of 1,2,4,5-tetracyanobenzene (TCNB) and acetylated anthracene.
View Article and Find Full Text PDFElectron-Spin Relaxation in Boron-Doped Graphene Nanoribbons.
J Chem Theory Comput
November 2024
Donostia International Physics Center DIPC, Paseo Manuel Lardizabal 4, 20018 Donostia-San Sebastián, Spain.
Boron-doped graphene nanoribbons are promising platforms for developing organic materials with magnetic properties. Boron dopants can be used to create localized magnetic states in nanoribbons with tunable interactions. Controlling the coherence times of these magnetic states is the very first step in designing materials for quantum computation or information storage.
View Article and Find Full Text PDFSorbitol-Based Glass Matrices Enable Dynamic Nuclear Polarization beyond 200 K.
J Phys Chem Lett
August 2024
National High Magnetic Field Laboratory, Florida State University, 1800 E. Paul Dirac Drive, Tallahassee, Florida 32310, United States.
In magic angle spinning dynamic nuclear polarization (MAS-DNP) experiments, paramagnetic species are often dispersed in rigid glass-forming matrices such as glycerol/water mixtures, but their modest glass-transition temperature () restricts the viable temperature range for MAS-DNP. To expand applications of DNP at higher temperatures, new matrices and physical insights are required. Here we demonstrate that sorbitol, ≈ 267 K, advantageously replaces glycerol, ≈ 190 K, to carry out DNP at higher temperature while maintaining an identical C NMR spectrum footprint and thus minimizing spectral overlap.
View Article and Find Full Text PDFStable organic radical qubits and their applications in quantum information science.
Innovation (Camb)
September 2024
Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, Hangzhou 310030, China.
The past century has witnessed the flourishing of organic radical chemistry. Stable organic radicals are highly valuable for quantum technologies thanks to their inherent room temperature quantum coherence, atomic-level designability, and fine tunability. In this comprehensive review, we highlight the potential of stable organic radicals as high-temperature qubits and explore their applications in quantum information science, which remain largely underexplored.
View Article and Find Full Text PDFSpin-Lattice Relaxation and Spin-Phonon Coupling of s Metal Ions at the Surface.
J Phys Chem Lett
July 2024
Department of Chemistry and NIS Centre of Excellence, University of Turin, via Giuria 7, 10125 Torino, Italy.
To use transition metal ions for spin-based applications, it is essential to understand fundamental contributions to electron spin relaxation in different ligand environments. For example, to serve as building blocks for a device, transition metal ion-based molecular qubits must be organized on surfaces and preserve long electron spin relaxation times, up to room temperature. Here we propose monovalent group 12 ions (Zn and Cd) as potential electronic metal qubits with an s ground state.
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