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Decoherence from dipolar interspin interactions in molecular spin qubits
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Decoherence from dipolar interspin interactions in molecular spin qubits
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| Escalera Moreno, Luis; Gaita Ariño, Alejandro Perfil; Coronado Miralles, Eugenio Perfil | |||
| This document is a artículoDate2019 | |||
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| The realization of spin-based logical gates crucially depends on magnetically coupled spin qubits. Thus, understanding decoherence when spin qubits are in close proximity will become a roadblock to overcome. Herein, we propose a method free of fitting parameters to evaluate the qubit phase memory time Tm in samples with high electron spin concentrations. The method is based on a model aimed to estimate magnetic nuclear decoherence [P. C. E. Stamp and I. S. Tupitsyn, Phys. Rev. B 69, 014401 (2004)]. It is applied to a ground-spin J=8 magnetic molecule 1 displaying atomic clock transitions, namely [HoIII(W5O18)2]9−, which remarkably increase Tm at unusually high electron-spin concentrations. Our approach unveils the causes that limit the coherence reached at the clock transitions in challenging systems such as 1, where recent models fail. | |||
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Escalera Moreno, Luis Gaita Ariño, Alejandro Coronado Miralles, Eugenio 2019 Decoherence from dipolar interspin interactions in molecular spin qubits Physical Review B 100 064405-1 064405-9 |
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| https://doi.org/10.1103/PhysRevB.100.064405 |
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22 - Física [3702]