Room-Temperature Cavity Quantum Electrodynamics
Our new paper in npj Quantum Information on cavity quantum electrodynamics using masers is available free (open access) here:
In this work, we managed to achieve strong-coupling at room-temperature with a photo-excited spin-ensemble. Similar studies have been presented previously with ensembles of paramagnetic ions, but this is the first time an almost pure collective quantum state had been initialised. Of the ~1015 pentacene molecules, over 90% were prepared in the excited state.
This was a fun paper. Realising we were operating in the strong-coupling regime of cavity quantum electrodynamics, for me, was a milestone.