Quantum dots have many applications, but they would be even more useful if the light they emit wasn’t so blinking random. Thanks to researchers at the Massachusetts Institute of Technology (MIT), this goal is now within reach. By finding a means of keeping quantum dots from blinking on and off – a problem that has blighted these nanoscale chunks of semiconducting material since their discovery – the MIT team paved the way for new, precision applications, including single-photon sources for quantum cryptography and biological imaging.
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