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World’s 1st petahertz-frequency mixer advances ultra-fast communication tech | Petahertz-frequency mixers would enable the transmission and processing of vastly larger amounts of information at many times higher speeds.
MIT researchers demonstrate a lightwave-electronic mixer at petahertz frequencies, paving the way for faster communication technology.
A recent open-access study published in Science Advances by Matthew Yeung, Lu-Ting Chou, Marco Turchetti, Felix Ritzkowsky, Karl K. Berggren, and Phillip D. Keathley at MIT has demonstrated a significant step forward. Such petahertz electronic devices could enable developments that ultimately revolutionize fields that require precise analysis of extremely fast optical signals, such as spectroscopy and imaging, where capturing femtosecond-scale dynamics is crucial (a femtosecond is one-millionth of one-billionth of a second). In contrast, the lightwave-electronic method demonstrated by the authors uses a light-driven tunneling mechanism that offers high nonlinearities for frequency mixing and direct electronic output using nanometer-scale devices (a nanometer is one billionth of a meter).
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