Kolloquien

Quantum simulators have become powerful tools for probing non-equilibrium many-body dynamics, from thermalization to hydrodynamics. Beyond condensed matter, they offer a frontier for exploring quantum matter in extreme conditions like those of high-energy collisions. [mehr]

Superconducting circuits can be used as artificial atoms and we will discuss how they can be used to study new physics. Specifically, I will show how artificial atoms can be used to study vacuum fluctuations by placing the atom in front of a mirror. [mehr]

The talk reviews the recent works of the Laser Physics Group at NTNU on femtosecond waveguide lasers operating in the mid-IR wavelength range above 2 microns, as well as the implications this class of lasers may have for real-world applications and for future research, including quantum technologies. Recent progress in Cr²⁺:ZnS waveguides demonstrates laser amplification, frequency comb generation, and nonlinear conversion, targeting a miniaturized, ultra-stable comb spanning visible (<600 nm) to mid-IR (>5 μm) with intrinsic support for f–2f, 2f–3f, and related stabilization schemes. This requires balancing mode quality, amplification, and spectral broadening. [mehr]

In optics, vortices appear as phase twists of the electromagnetic field, traditionally arising from interactions between light and matter. Our lab investigates an extreme regime of optical nonlinearity in which quantum vortices emerge from strong, effective interactions between individual photons. We observe structured phase singularities in the few-photon wavefunction, including vortex lines and rings forming inside the optical medium. [mehr]

TBA [mehr]

Double feature of M.Sc. Irene Prieto-Rodríguez & Dr. Liyang Qiu [mehr]

tba [mehr]

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