Posts

FSU is hosting the symposium on Quantum Science and Engineering (April 6-8)

The Florida State University is pleased to announce a three-day symposium on Quantum Science and Engineering (QSE), with the goal to highlight cutting-edge research activities in this forefront area of critical national importance. The symposium is intended to provide opportunities to learn about various aspects of QSE, explore potential collaborations, and educate junior scientists and novices to this broad interdisciplinary field. We therefore encourage anyone with interest in QSE to consider participating. The symposium will provide opportunities for faculty, postdocs, and students to present their work in the form of short talks and posters. 

NEW PUBLICATION – Electron-nuclear decoupling at a spin clock transition

The ability to design quantum systems that decouple from environmental noise sources is highly desirable for development of quantum technologies with optimal coherence. The chemical tunability of electronic states in magnetic molecules combined with advanced electron spin resonance techniques provides excellent opportunities to address this problem. Indeed, so-called clock transitions have been shown to protect molecular spin qubits from magnetic noise, giving rise to significantly enhanced coherence. Here we conduct a spectroscopic and computational investigation of this physics, focusing on the role of the nuclear bath. Away from the clock transition, linear coupling to the nuclear degrees of freedom causes a modulation and decay of electronic coherence, as quantified via electron spin echo signals generated experimentally and in silico. Meanwhile, the effective hyperfine interaction vanishes at the clock transition, resulting in electron-nuclear decoupling and an absence of quantum information leakage to the nuclear bath, providing opportunities to characterize other decoherence sources.