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Local Control of a Single Nitrogen-Vacancy Center by Nanoscale Engineered Magnetic Domain Wall Motion
Nathan J McLaughlin1, Senlei Li2, Jeffrey A Brock3
1Department of Physics, University of California, San Diego, La Jolla, California 92093, United States.
ACS Nano
|December 5, 2023
Summary
Researchers demonstrate controlling nitrogen-vacancy (NV) center quantum properties using magnetic domain wall motion. This breakthrough enables interactive information transfer between quantum bits and magnetic memory for spintronic systems.
Area of Science:
- Quantum Information Sciences
- Spintronics
- Materials Science
Background:
- Effective qubit control and readout are crucial for quantum information technologies.
- Nitrogen-vacancy (NV) centers are promising quantum systems due to their coherence and functionality.
- Integrating quantum systems with memory requires novel control mechanisms.
Purpose of the Study:
- To investigate magnetic domain wall motion for local control of NV center spin properties.
- To establish a correlation between NV spin characteristics and magnetic device responses.
- To explore hybrid quantum spintronic systems for information transfer.
Main Methods:
- Engineered local magnetic field environment of NV centers using nanoscale reconfigurable domain wall motion.
- Measured NV photoluminescence, spin level energies, and coherence times.
- Correlated NV spin properties with the magneto-transport response of magnetic devices.
Main Results:
- Demonstrated reliable control of NV photoluminescence, spin level energies, and coherence time via domain wall motion.
- Established a direct correlation between NV spin properties and the magneto-transport response.
- Highlighted the electrically tunable dipole interaction between NV centers and nanoscale magnetic structures.
Conclusions:
- Magnetic domain wall motion provides a viable method for local control and readout of NV spin properties.
- This approach facilitates interactive information transfer between spin qubits and nonvolatile magnetic memory.
- Presents an attractive platform for developing hybrid quantum spintronic systems.
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