Published in Nature Physics, this research introduces a new type of optically connected qubits — an important step toward developing quantum networks that require stable, scalable, and adaptable quantum nodes.
Quantum dots are nanoscale structures with unique optical and electronic properties derived from quantum mechanics. Already used in technologies like display screens and medical imaging, they have gained attention in quantum communication due to their ability to emit single photons.
“This breakthrough is a testament to the power many-body physics can have in transforming quantum devices.”
Mete Atatüre
However, building effective quantum networks requires more than just photon emission. They also need stable qubits that can interact with photons and locally store quantum information. This study leverages the atomic spins within quantum dots, using them as a many-body quantum register capable of storing information for extended periods.
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