title: Rectifying the Optical-Field-Induced Current in Dielectrics: Petahertz Diode.
abstract: Investigating a theoretical model of the optical-field-induced current in dielectrics driven by strong few-cycle laser pulses, we propose an asymmetric conducting of the current by forming a heterojunction made of two distinct dielectrics with a low hole mass (m_{h}^{*}≪m_{e}^{*}) and low electron mass (m_{e}^{*}≪m_{h}^{*}), respectively. This proposition introduces the novel concept of a petahertz (10^{15}  Hz) diode to rectify the current in the petahertz domain, which should be a key ingredient for the electric signal manipulation of future light-wave electronics. Further, we suggest the candidate dielectrics for the heterojunction.
authors.affiliation: Department of Emerging Materials Science, DGIST, Daegu 711-873, Korea.
authors.forename: J D
authors.initials: JD
authors.lastname: Lee
authors.affiliation: Department of Emerging Materials Science, DGIST, Daegu 711-873, Korea.
authors.forename: Won Seok
authors.initials: WS
authors.lastname: Yun
authors.affiliation: School of Natural Science and Low-Dimensional Carbon Materials Center, UNIST, Ulsan 689-798, Korea.
authors.forename: Noejung
authors.initials: N
authors.lastname: Park