Elena Kammann

When large numbers of bosons, which are a special kind of particle, become indistinguishable at high densities and low temperatures, one can observe fascinating phenomena such as superfluidity, where fluids flows without experiencing any friction.

For this reason this state of matter is studied in various systems such as the semiconductor microcavities we are working with. Photons, which are the particles of light in these structures, strongly interact with matter and form new particles with modified physical properties. One can identify these particles by the way they emit light into different angles. The data in the lenticular represents a measurement that shows the changes in the nature of the particle taken with an extremely fast camera after the sample was struck by a short light pulse from a laser.