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    petahertz electronics tagged posts

    Nanostructures enable On-Chip Lightwave-Electronic Frequency Mixer

    September 6, 2024, Categories  Physics, Technology/Electronics

    Illustration of a computer chip, with waves of different colors and frequencies appearing above, below, and across it
    The demonstration of a lightwave-electronic mixer at petahertz-scale frquencies is a first step toward making communication technology faster and progresses research toward developing new, miniaturized lightwave electronic circuitry capable of handling optical signals directly at the nanoscale.
    Credits:Image: Sampson Wilcox/Research Laboratory of Electronics

    Imagine how a phone call works: Your voice is converted into electronic signals, shifted up to higher frequencies, transmitted over long distances, and then shifted back down so it can be heard clearly on the other end. The process enabling this shifting of signal frequencies is called frequency mixing, and it is essential for communication technologies like radio and Wi-Fi...

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    Electrons at the Speed Limit: how fast electrons can ultimately be controlled with electric fields

    August 26, 2016, Categories  Physics, Technology/Electronics

    A short laser pulse travels through a diamond (black spheres) and excites electrons inside it. The strength of the excitation is measured using an attosecond ultraviolet pulse (violet). Credit: Matteo Lucchini, Copyright ETH Zurich

    A short laser pulse travels through a diamond (black spheres) and excites electrons inside it. The strength of the excitation is measured using an attosecond ultraviolet pulse (violet). Credit: Matteo Lucchini, Copyright ETH Zurich

    These insights are important for petahertz electronics of the future. Today’s electronic circuits already routinely work at frequencies of several gigahertz (a billion oscillations per second) up to terahertz (a thousand billion oscillations). Modern computers are as powerful as they are because tiny switches inside them steer electric currents in fractions of a billionth of a second...

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