title: Time-frequency domain analogues of phase space sub-planck structures.
abstract: We present experimental data of the frequency-resolved optical gating measurements of light pulses revealing interference features which correspond to sub-Planck structures in phase space. For superpositions of pulses, a small, sub-Fourier shift in the carrier frequency leads to a state orthogonal to the initial one, although in the representation of standard time-frequency distributions these states seem to have a nonvanishing overlap.
authors.affiliation: Theoretical Physics Division, Sofia University, James Bourchier 5 Boulevard, 1164 Sofia, Bulgaria.
authors.forename: Ludmiła
authors.initials: L
authors.lastname: Praxmeyer
authors.forename: Piotr
authors.initials: P
authors.lastname: Wasylczyk
authors.forename: Czesław
authors.initials: C
authors.lastname: Radzewicz
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Wódkiewicz