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MIT researchers have developed a way to manufacture and integrate artificial atoms with photonic circuitry to produce a quantum chip that could be used for large-scale quantum systems. Using a hybrid, modular approach, the researchers built what they believe to be the largest integrated artificial-atom photonics chip yet.
Instead of trying to build a large quantum chip entirely in diamond, the researchers integrated quantum microchiplets, or QMCs — diamond waveguide arrays containing highly coherent color centers — on a photonic integrated circuit (PIC). The artificial atoms in the chiplets consist of the diamond color centers. Each center functions as an atom-like emitter whose spin states can form a qubit. When prodded…READ MORE