Soliton microcombs face challenges from timing jitter, which limits their precision in applications like lidar and optical communications. To overcome this, researchers developed a dispersion-managed silicon nitride microresonator that suppresses avoided mode crossings. The device operates at an 89 GHz repetition rate and achieves femtosecond-level jitter, setting a new performance benchmark for chip-scale combs and enabling advances in space navigation, ultrafast data transfer, and quantum metrology.

Achieved the first spectroscopic observation of hydrogen (H₂) and deuterium (D₂) molecules physically adsorbed within an atomic-scale space known as a picocavity.Employed picometric rotational/vibrational spectroscopy to elucidate their structure and dynamics at the single-molecule level.Observed distinct spectral responses for H₂ and D₂, and theoretically demonstrated that these differences arise from non-trivial isotope effects due to quantum nuclear effects.

This advancement in precision molecular spectroscopy within picocavities opens new possibilities for well-controlled studies of functional materials for energy applications, such as hydrogen storage systems and catalytic surfaces, as well as for developing single-molecule quantum control technologies.