September 19th, 2024

Quantum researchers cause controlled 'wobble' in the nucleus of a single atom

Researchers at Delft University of Technology induced a controlled movement in a titanium atom's nucleus, confirming theoretical predictions and suggesting potential for stable quantum information storage and future quantum technologies.

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Quantum researchers cause controlled 'wobble' in the nucleus of a single atom

Researchers at Delft University of Technology have successfully induced a controlled movement, or 'wobble', in the nucleus of a single titanium atom (Ti-47). This groundbreaking work, published in Nature Communications, demonstrates the interaction between the atomic nucleus and an outer electron, which can be manipulated using a scanning tunneling microscope. The study focused on the unique properties of Ti-47, which has a slightly magnetic nucleus due to having one less neutron than the more common Ti-48. The researchers utilized a weak hyperfine interaction to influence the nuclear spin through the electron's spin, achieving this with a precisely tuned magnetic field. By applying a voltage pulse, they were able to push the electron spin out of equilibrium, resulting in a synchronized wobble of both spins for a brief moment. This experiment not only confirms theoretical predictions by Schrödinger but also suggests that the nuclear spin could serve as a stable medium for storing quantum information, protected from external disturbances. The researchers emphasize the significance of their ability to manipulate matter at such a minuscule scale, highlighting the potential implications for future quantum technologies.

- Researchers induced a controlled 'wobble' in the nucleus of a titanium atom.

- The study focused on the Ti-47 atom, which has unique magnetic properties.

- A weak hyperfine interaction allowed the nuclear spin to be influenced by an electron's spin.

- The experiment confirms theoretical predictions and suggests potential for quantum information storage.

- The ability to manipulate matter at a small scale has significant implications for quantum technology.

Link Icon 5 comments
By @acidburnNSA - 7 months
Big dream of mine would be to align nuclei of nuclear fuel atoms just so and then induce fission in such a way as to get one delayed neutron precursor and one other quick-to-stability fission product. This would allow fission power without any long-lived waste products or afterglow heat cooling challenges that dominate accident risk. Physicist friends have told me it's impossible. I've only accepted impractical for now.
By @unsupp0rted - 7 months
For MRI / medical imaging, if nuclear wobbling can enhance signal strength, it might be possible to achieve high-quality images using lower-strength magnetic fields, and much faster. Maybe even ones that fit in a backpack and unfold.
By @gaze - 7 months
I’m not totally sure what makes this result so novel but also that’s probably due to my ignorance. Hyperfine qubits are pretty common using neutral atoms, and you can do imaging on the hyperfine states. Is the novelty here that the electron spin is on resonance with the nuclear spin and that it’s done with STM? I guess I don’t see how pump-probe is so much more direct than using an imaging transition.
By @notum - 7 months
CTRL+F "entanglement". Disappointed.

No interstellar comms for us.