Coherent spin dynamics between electron and nucleus within a single atom
Researchers demonstrated coherent spin dynamics between electron and nuclear spins in a titanium atom using electron spin resonance and scanning tunneling microscopy, revealing insights into hyperfine interactions and quantum information applications.
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Researchers have demonstrated coherent spin dynamics between the electron and nuclear spins within a single hydrogenated titanium atom using electron spin resonance (ESR) combined with scanning tunneling microscopy (STM). This study addresses the challenge of accessing the time evolution of nuclear spins, which are typically more isolated from environmental influences than electron spins. By utilizing the STM probe's magnetic field, the researchers were able to tune the electron and nuclear spins, revealing a complex pattern of coherent oscillations indicative of hyperfine interactions. The experiment involved polarizing both spins through tunneling electron scattering and measuring their free evolution using a DC pump-probe scheme. The findings provide insights into hyperfine physics at the atomic level, highlighting the potential for nuclear spins to serve as building blocks for quantum information applications due to their longer coherence times. The study also emphasizes the importance of high bias voltages for efficient nuclear spin pumping, which allows for the exploration of lower frequency regimes and enhanced electron-nuclear spin entanglement.
- Coherent spin dynamics between electron and nuclear spins were successfully demonstrated in a single titanium atom.
- The study utilized electron spin resonance and scanning tunneling microscopy to explore hyperfine interactions.
- High bias voltages were crucial for efficient nuclear spin pumping and accessing lower frequency regimes.
- The findings suggest potential applications of nuclear spins in quantum information technology due to their longer coherence times.
- The research provides new insights into the complex interactions between electron and nuclear spins at the atomic level.
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