title: Ultrafast Fourier transform with a femtosecond-laser-driven molecule.
abstract: Wave functions of electrically neutral systems can be used as information carriers to replace real charges in the present Si-based circuit, whose further integration will result in a possible disaster where current leakage is unavoidable with insulators thinned to atomic levels. We have experimentally demonstrated a new logic gate based on the temporal evolution of a wave function. An optically tailored vibrational wave packet in the iodine molecule implements four- and eight-element discrete Fourier transform with arbitrary real and imaginary inputs. The evolution time is 145 fs, which is shorter than the typical clock period of the current fastest Si-based computers by 3 orders of magnitudes.
authors.affiliation: Institute for Molecular Science, National Institutes of Natural Sciences, Myodaiji, Okazaki 444-8585, Japan.
authors.forename: Kouichi
authors.initials: K
authors.lastname: Hosaka
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Shimada
authors.forename: Hisashi
authors.initials: H
authors.lastname: Chiba
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Katsuki
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Teranishi
authors.forename: Yukiyoshi
authors.initials: Y
authors.lastname: Ohtsuki
authors.forename: Kenji
authors.initials: K
authors.lastname: Ohmori