AI Article Synopsis
- Recent developments in nuclear spins suggest potential for nuclear-spin-based quantum bits, moving away from traditional methods.
- Local magnetic fields help control nuclear spin states, but using electric fields could enable faster and more precise control.
- The authors demonstrate that the hyperfine Stark effect allows for single nuclear spin manipulation using only electric fields, applicable to various systems like phosphorus or bismuth in silicon, paving the way for improved spin device control.
Article Abstract
Recent advances in addressing isolated nuclear spins have opened up a path toward using nuclear-spin-based quantum bits. Local magnetic fields are normally used to coherently manipulate the state of the nuclear spin; however, electrical manipulation would allow for fast switching and spatially confined spin control. Here, we propose and demonstrate coherent single nuclear spin manipulation using electric fields only. Because there is no direct coupling between the spin and the electric field, we make use of the hyperfine Stark effect as a magnetic field transducer at the atomic level. This quantum-mechanical process is present in all nuclear spin systems, such as phosphorus or bismuth atoms in silicon, and offers a general route toward the electrical control of nuclear-spin-based devices.
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| http://dx.doi.org/10.1126/science.1249802 | DOI Listing |
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