تقرير
Enhancing Spin Coherence in Optically Addressable Molecular Qubits through Host-Matrix Control
| العنوان: | Enhancing Spin Coherence in Optically Addressable Molecular Qubits through Host-Matrix Control |
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| المؤلفون: | Bayliss, S. L., Deb, P., Laorenza, D. W., Onizhuk, M., Galli, G., Freedman, D. E., Awschalom, D. D. |
| سنة النشر: | 2022 |
| المجموعة: | Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics |
| الوصف: | Optically addressable spins are a promising platform for quantum information science due to their combination of a long-lived qubit with a spin-optical interface for external qubit control and read out. The ability to chemically synthesize such systems - to generate optically addressable molecular spins - offers a modular qubit architecture which can be transported across different environments, and atomistically tailored for targeted applications through bottom-up design and synthesis. Here we demonstrate how the spin coherence in such optically addressable molecular qubits can be controlled through engineering their host environment. By inserting chromium (IV)-based molecular qubits into a non-isostructural host matrix, we generate noise-insensitive clock transitions, through a transverse zero-field splitting, that are not present when using an isostructural host. This host-matrix engineering leads to spin-coherence times of more than 10 microseconds for optically addressable molecular spin qubits in a nuclear and electron-spin rich environment. We model the dependence of spin coherence on transverse zero-field splitting from first principles and experimentally verify the theoretical predictions with four distinct molecular systems. Finally, we explore how to further enhance optical-spin interfaces in molecular qubits by investigating the key parameters of optical linewidth and spin-lattice relaxation time. Our results demonstrate the ability to test qubit structure-function relationships through a tunable molecular platform and highlight opportunities for using molecular qubits for nanoscale quantum sensing in noisy environments. Comment: 13 pages, 5 figures |
| نوع الوثيقة: | Working Paper |
| الوصول الحر: | http://arxiv.org/abs/2204.00168Test |
| رقم الانضمام: | edsarx.2204.00168 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |