A quantum coherent spin in hexagonal boron nitride at ambient conditions

A quantum coherent spin in hexagonal boron nitride at ambient conditions

20 May 2024 | Hannah L. Stern, Carmem M. Gilardoni, Qiushi Gu, Simone Eizagirre Barker, Oliver F. J. Powell, Xiaoxi Deng, Stephanie A. Fraser, Louis Follet, Chi Li, Andrew J. Ramsay, Hark Hoe Tan, Igor Aharonovich, Mete Atatüre
This article reports the realization of a quantum coherent spin in hexagonal boron nitride (hBN) at ambient conditions. The study identifies a carbon-related defect in hBN that exhibits a spin-triplet ground-state manifold with a 1.96 GHz zero-field splitting. The spin coherence is primarily governed by coupling to a few proximal nuclei, which can be prolonged using decoupling protocols. The results demonstrate a new platform for room-temperature spin qubits coupled to multi-qubit quantum registers or sensors, with potential applications in quantum networks and sensing. The defect's optically isolated nature and long coherence times under ambient conditions make it a promising candidate for scalable quantum technologies.This article reports the realization of a quantum coherent spin in hexagonal boron nitride (hBN) at ambient conditions. The study identifies a carbon-related defect in hBN that exhibits a spin-triplet ground-state manifold with a 1.96 GHz zero-field splitting. The spin coherence is primarily governed by coupling to a few proximal nuclei, which can be prolonged using decoupling protocols. The results demonstrate a new platform for room-temperature spin qubits coupled to multi-qubit quantum registers or sensors, with potential applications in quantum networks and sensing. The defect's optically isolated nature and long coherence times under ambient conditions make it a promising candidate for scalable quantum technologies.
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Understanding A quantum coherent spin in hexagonal boron nitride at ambient conditions