DOUBLE FEATURE Dr. Omer Amit and Dr. Nick Karpowicz

Dr. Omer Amit talks about: “Hydrogen Optical Lattice Clock”

Defining units through constants separates the definition from realization. A hydrogen lattice clock could eliminate the last object from the SI system.
Unlike traditional methods, our trap doesn't require laser cooling, making it easier to load. The clock transition would be the Doppler-free 1S-2S transition. Our compact setup could be operated as a computable optical clock to redefine the SI-second and to improve spectroscopic data to test QED.

Dr. Nick Karpowicz talks about: “Field-resolved approaches to attosecond science”

For decades, attosecond science has been giving us new insight into light-matter interaction by allowing time-resolved access to events lasting only a fraction of an optical cycle. The first generation of attosecond experiments made use of the high harmonic generation process to produce short bursts of extreme ultraviolet radiation, which were then used in a variety of experimental geometries to excite and observe laser-induced dynamics. As we learned about these physical processes, one thing became clear: the electric field of light often leaves its own imprint behind in a way that makes it possible to extract it directly from the measurement. We will show that this has surprisingly opened a door to a new generation of attosecond experiments, where charge carriers inscribe their motion directly into an electromagnetic wave that we can record with sub-femtosecond resolution.