A dissymmetric [Gd2] coordination molecular dimer hosting six addressable spin qubits
| العنوان: | A dissymmetric [Gd2] coordination molecular dimer hosting six addressable spin qubits |
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| المؤلفون: | Olivier Roubeau, Guillem Aromí, Leoní A. Barrios, Verónica Velasco, David Aguilà, Pablo J. Alonso, David Zueco, Jesús I. Martínez, Fernando Luis |
| المصدر: | Communications Chemistry, Vol 3, Iss 1, Pp 1-11 (2020) Zaguán. Repositorio Digital de la Universidad de Zaragoza Consejo Superior de Investigaciones Científicas (CSIC) Zaguán: Repositorio Digital de la Universidad de Zaragoza Universidad de Zaragoza Communications Chemistry |
| بيانات النشر: | Nature Publishing Group, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Spin states, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Biochemistry, Molecular physics, law.invention, lcsh:Chemistry, law, Materials Chemistry, Environmental Chemistry, Electron paramagnetic resonance, Hyperfine structure, Quantum, Spin-½, Quantum computer, Physics, molecular magnets, spin qubits and qudits, quantum spin coherence, quantum computation and simulation, General Chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, lcsh:QD1-999, Qubit, Condensed Matter::Strongly Correlated Electrons, 0210 nano-technology, Coherence (physics) |
| الوصف: | Artificial magnetic molecules can host several spin qubits, which could then implement small-scale algorithms. In order to become of practical use, such molecular spin processors need to increase the available computational space and warrant universal operations. Here, we design, synthesize and fully characterize dissymetric molecular dimers hosting either one or two Gadolinium(III) ions. The strong sensitivity of Gadolinium magnetic anisotropy to its local coordination gives rise to different zero-field splittings at each metal site. As a result, the [LaGd] and [GdLu] complexes provide realizations of distinct spin qudits with eight unequally spaced levels. In the [Gd2] dimer, these properties are combined with a Gd-Gd magnetic interaction, sufficiently strong to lift all level degeneracies, yet sufficiently weak to keep all levels within an experimentally accessible energy window. The spin Hamiltonian of this dimer allows a complete set of operations to act as a 64-dimensional all-electron spin qudit, or, equivalently, as six addressable qubits. Electron paramagnetic resonance experiments show that resonant transitions between different spin states can be coherently controlled, with coherence times TM of the order of 1 µs limited by hyperfine interactions. Coordination complexes with embedded quantum functionalities are promising building blocks for quantum computation and simulation hybrid platforms. Molecular spin processors are promising for quantum computing, but for universal applicability the available computational space needs to be expanded beyond three qubits while retaining the ability to perform universal quantum operations. Here, the authors report dissymetric molecular Gadolinium(III) dimers acting as 6-qubit quantum processors. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2399-3669 |
| DOI: | 10.1038/s42004-020-00422-w |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74818ea2ba3270ab9799513e8b521c02 http://link.springer.com/article/10.1038/s42004-020-00422-w |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....74818ea2ba3270ab9799513e8b521c02 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 23993669 |
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| DOI: | 10.1038/s42004-020-00422-w |