Researchers have discovered a way to control the spin property of nuclei, which can store quantum information, using lasers. Quantum-based devices, including computers and sensors, have the potential to revolutionize the way we perform complex tasks by vastly outperforming traditional digital techn
Diagram illustrates the way two laser beams of slightly different wavelengths can affect the electric fields surrounding an atomic nucleus, pushing against this field in a way that nudges the spin of the nucleus in a particular direction, as indicated by the arrow. Credit: Haowei Xu, Ju Li and Paola Cappellaro,Researchers have discovered a way to control the spin property of nuclei, which can store quantum information, using lasers.
In the new process developed by the MIT team, the difference in the frequency of an incoming laser beam matches the transition frequencies of the nuclear spin, nudging the nuclear spin to flip a certain way. Previous attempts to use light to affect nuclear spins were indirect, coupling instead to electron spins surrounding that nucleus, which in turn would affect the nucleus though magnetic interactions. But this requires the existence of nearby unpaired electron spins and leads to additional noise on the nuclear spins.
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