000163054 001__ 163054
000163054 005__ 20260418110658.0
000163054 0247_ $$2doi$$a10.1002/anie.202510603
000163054 0248_ $$2sideral$$a145518
000163054 037__ $$aART-2025-145518
000163054 041__ $$aeng
000163054 100__ $$aSwain, Abinash
000163054 245__ $$aEncapsulation Enhances the Quantum Coherence of a Solid‐State Molecular Spin Qubit
000163054 260__ $$c2025
000163054 5060_ $$aAccess copy available to the general public$$fUnrestricted
000163054 5203_ $$aSpins within molecules benefit from the atomistic control of synthetic chemistry for the realization of qubits. One advantage is that the quantum superpositions of the spin states encoding the qubit can be coherently manipulated using electromagnetic radiation. The main challenge is the fragility of these superpositions when qubits are to partake of solid‐state devices. We address this issue with a supramolecular approach for protecting molecular spin qubits against decoherence. The molecular qubit [Cr(ox)3]3− has been encapsulated inside the diamagnetic triple‐stranded helicate [Zn2L3]4+ (L is a bis‐pyrazolylpyridine ligand). The quantum coherence of the protected qubit is then analyzed with pulsed EPR spectroscopy and compared with the unprotected qubit, both in solution and in the solid state. Crucially, the spin–spin relaxation in the solid state has been examined within diamagnetic crystal lattices of the isostructural ([Al(ox)3]@[Zn2L3])+ or [Al(ox)3]3‐ assemblies, respectively, doped with the Cr3+ qubit in two different (<10%) concentrations. The study unveils a surprising increase of the phase memory time of the qubit upon encapsulation only in the solid. Spin‐lattice relaxation times also exhibit a significant enhancement, as established from inversion recovery pulse sequences and from slow relaxation of the magnetization of the protected qubit, not featured by the free qubit.
000163054 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E31-23R$$9info:eu-repo/grantAgreement/ES/MICINN-AEI/PRTR-C17.I1$$9info:eu-repo/grantAgreement/ES/MICINN/BG22-00039$$9info:eu-repo/grantAgreement/ES/MICINN/PID2020-1183294RB-I00$$9info:eu-repo/grantAgreement/ES/MICINN/PID2022-137764OB-I00$$9info:eu-repo/grantAgreement/EUR/MICINN/PID2023-150767OB-I00$$9info:eu-repo/grantAgreement/EUR/MICINN/TED2021-129214B-I00
000163054 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000163054 655_4 $$ainfo:eu-repo/semantics/conferenceObject$$vinfo:eu-repo/semantics/publishedVersion
000163054 700__ $$aBarrios, Leoní A.
000163054 700__ $$aNelyubina, Yulia
000163054 700__ $$aTeat, Simon J.
000163054 700__ $$0(orcid)0000-0003-2095-5843$$aRoubeau, Olivier
000163054 700__ $$aNovikov, Valentin
000163054 700__ $$aAromí, Guillem
000163054 773__ $$g64, 42 (2025), e202510603 [6 pp.]$$pAngew. Chem. (Int. ed.)$$tAngewandte Chemie (International ed.)$$x1433-7851
000163054 8564_ $$s1063998$$uhttps://zaguan.unizar.es/record/163054/files/texto_completo.pdf$$yVersión publicada
000163054 8564_ $$s2981595$$uhttps://zaguan.unizar.es/record/163054/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000163054 909CO $$ooai:zaguan.unizar.es:163054$$particulos$$pdriver
000163054 951__ $$a2026-04-18-11:05:08
000163054 980__ $$aARTICLE