Konwersatorium im. Leopolda Infelda

In this talk I show that Gaussian wave packets and optical pulses can exhibit interference, squeezing, correlations and quantum sub-Planck structures in phase space. These structures – an unexpected sign of quantum interference - play a surprisingly important role in the distinguishability of quantum states. It is shown that such sub-Planck structures can occur in linear superpositions of Gaussian wave packets. FROG measurement of light pulses can reveal sub-Fourier structures in time and frequency phase space.