<p>➀ The current state-of-the-art machine learning applications use deep neural network models that have become so large and complex that they have exceeded the limits of traditional electronic computing hardware.</p><p>➁ Researchers at MIT and other institutions have developed a new type of photonic chip that can overcome these barriers.</p><p>➂ The optical device can complete the key calculations of machine learning classification tasks in less than half a nanosecond while achieving an accuracy rate of over 92%.</p>