Ultrafast Fourier transform with a femtosecond-laser-driven molecule

Kouichi Hosaka*, Hiroyuki Shimada, Hisashi Chiba, Hiroyuki Katsuki, Teranishi Yoshiaki, Yukiyoshi Ohtsuki, Kenji Ohmori

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Scopus citations


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.

Original languageEnglish
Article number180501
JournalPhysical Review Letters
Issue number18
StatePublished - 3 May 2010

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