Physics & AstronomyFebruary 14: Neil Zimmerman, NIST, "Science, Excitement and Challenges of Distributing Entanglement over a Quantum Network"

2D materials are exciting in part because they have novel properties which are often the result of the energy level spectrum. In order to investigate this, we have recently developed a new technique for assessing transport in the GHz frequency range for small flakes of 2D materials; we are presently pursuing extending this to the THz range. This is hard because focusing radiation down into such a small area, and being sensitive to conduction in a 2D material, have not been straightforward; we achieve this using a small gap in a coplanar waveguide (CPW). In addition to looking for the qualitative physics in spectral features to tell us about the energy levels, we can also accurately measure the absolute complex conductivity. I will discuss i) the basic concept and motivation, ii) the theoretical underpinning and main challenges, and iii) our results in Si:P monolayers and in MoSe2.