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3 years ago in Material Science , Mechanical Engineering , Physics By Keerthi Gupta
Is it possible to construct a visible artificial atom?
Working with quantum dots and photonic crystals, we aim to create "designer" quantum systems. While we have infrared artificial atoms, the visible regime demands different materials and stricter fabrication. I'm curious if the community sees a clear path to a robust, scalable visible-wavelength counterpart.
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By Justin Answered 3 years ago
We are arguably already there, but with caveats. I have seen quantum dots, particularly in wide-bandgap materials, act as superb visible-range artificial atoms with discrete excitonic transitions. The feasibility is high for proof-of-principle. The greater challenge, which I would recommend focusing on, is scalable integration and indistinguishability. Creating a perfectly uniform array of them, coupled to a photonic waveguide with high efficiency in the visible, is where current nanofabrication pushes its limits. The goal isn't just to make one, but to make many identical ones that we can control that's the frontier.
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