It is known from ensemble measurements that rubidium atoms trapped in solid parahydrogen have favorable properties for quantum sensing of magnetic fields. To use a single atom as sensor requires technique capable efficiently measuring the internal state atom, such laser-induced fluorescence. In this work we search fluorescence ensembles and, separately, neon. find no evidence over range explore...

The alignment of the nuclear spins in parahydrogen can be transferred to other molecules by a homogeneously catalyzed hydrogenation reaction resulting in dramatically enhanced NMR signals. In this chapter we introduce the involved theoretical concepts by two different approaches: the well known, intuitive population approach and the more complex but more complete density operator formalism. Fur...

Abstract. The signal of magnetic resonance imaging (MRI) can be enhanced by several orders magnitude using hyperpolarization. In comparison to a broadly used dynamic nuclear polarization (DNP) technique that is already in clinical trials, the parahydrogen (pH2)-based hyperpolarization approaches are less cost-intensive, scalable, and offer high throughput. However, pH2 generator necessary. Avai...

Traditional P NMR or MRI measurements suffer from low sensitivity relative to H detection and consequently require longer scan times. We show here that hyperpolarization of 31 P nuclei through reversible interactions with parahydrogen can deliver substantial signal enhancements in a range of regioisomeric phosphonate esters containing a heteroaromatic motif which were synthesized in order to id...