+++ONLINE COLLOQUIUM+++ DOUBLE FEATURE Dr. Matthew Weidman and M.Sc. Annie Jihyun Park

Dr. Matthew Weidman talks about: Attosecond Metrology 2.0

I will talk about our recent advances in the generation of waveform tunable optical transients with multi-octave bandwidth as well as our advances in solid state attosecond metrology for directly measuring the electric field of these optical pulses—with petahertz bandwidth. We have used the well-established method of attosecond streaking as a benchmark, as we’ve pushed the limits of electro-optic sampling as well as linear and non-linear photoconductive sampling techniques. These new electric field metrology methods constitute the basis for attosecond science 2.0! Finally, I’ll touch on our recent efforts towards the application of this unique infrastructure for exciting and detecting vibrational modes in molecules, using an impulse excitation.

M.Sc. Annie Jihyun Park talks about:Towards Quantum Simulation of Light-Matter Interfaces with Strontium Atoms in Optical Lattices

Quantum simulators based on ultracold atoms in optical lattices are renowned for their successes in emulating strongly correlated condensed matter systems. In addition, recent theoretical proposals show that the high degree of controllability of these simulators also enables emulating strongly-coupled light-matter-interfaces in parameter regimes that are unattainable in real photonic systems. To realize these exciting proposals, the integration and development of experimental tools are necessary. For this reason, we have been constructing a new quantum simulator based on ultracold strontium atoms in optical lattices that combines clock technology, state-dependent control, build-up cavities, and quantum gas microscopy. In this talk, I will focus on our latest implementation of the in-vacuum, monolithic build-up cavities which will be used to increase the system sizes in quantum gas microscopes by an order of magnitude compared to the state-of-the-art, improve the lattice homogeneity, and enhance the lattice depth. These advantages will reduce finite size effects and allow implementing state-dependent lattices, which are a key ingredient to the aforementioned proposals. To benchmark the size and homogeneity of the lattices created in these cavities, we image their intensity profile using clock spectroscopy. Beyond studying strong light-matter interactions, our new quantum technologies will open up many new possibilities for analog and digital quantum simulation including controlled collisional phase gates and applications in quantum chemistry.