title: Subcycle Optical Response Caused by a Terahertz Dressed State with Phase-Locked Wave Functions.
abstract: The coherent interaction of light with matter imprints the phase information of the light field on the wave function of the photon-dressed electronic state. A driving electric field, together with a stable phase that is associated with the optical probe pulses, enables the role of the dressed state in the optical response to be investigated. We observed optical absorption strengths modulated on a subcycle time scale in a GaAs quantum well in the presence of a multicycle terahertz driving pulse using a near-infrared probe pulse. The measurements were in good agreement with the analytical formula that accounts for the optical susceptibilities caused by the dressed state of the excitons, which indicates that the output probe intensity was coherently reshaped by the excitonic sideband emissions.
authors.affiliation: Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan.|Department of Physics, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Uchida
authors.affiliation: Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0615, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Otobe
authors.affiliation: Fukushima Renewable Energy Institute, National Institute of Advanced Industrial Science and Technology, Koriyama, Fukushima 963-0298, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Mochizuki
authors.affiliation: Institute for Solid State Physics, the University of Tokyo, and JST-CREST, Kashiwa, Chiba 277-8581, Japan.
authors.forename: C
authors.initials: C
authors.lastname: Kim
authors.affiliation: Institute for Solid State Physics, the University of Tokyo, and JST-CREST, Kashiwa, Chiba 277-8581, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Yoshita
authors.affiliation: Institute for Solid State Physics, the University of Tokyo, and JST-CREST, Kashiwa, Chiba 277-8581, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Akiyama
authors.affiliation: Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: L N
authors.initials: LN
authors.lastname: Pfeiffer
authors.affiliation: Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: K W
authors.initials: KW
authors.lastname: West
authors.affiliation: Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan.|Department of Physics, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Tanaka
authors.affiliation: Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan.|Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Hirori