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Mechanical spin control of nitrogen-vacancy centers in diamond
E R MacQuarrie1, T A Gosavi1, N R Jungwirth1
1Cornell University, Ithaca, New York 14853, USA.
Physical Review Letters
|December 17, 2013
Summary
Researchers achieved direct coupling between phonons and diamond nitrogen-vacancy (NV) center spins using mechanical strain at room temperature. This breakthrough enables enhanced quantum metrology and a deeper study of spin-phonon interactions.
Area of Science:
- Quantum physics
- Materials science
- Solid-state physics
Background:
- Diamond nitrogen-vacancy (NV) centers are promising quantum systems.
- Controlling NV center spins typically involves optical or magnetic fields.
- Spin-phonon interactions are crucial for quantum information processing.
Purpose of the Study:
- To demonstrate direct mechanical control of diamond NV center spins.
- To explore spin-phonon coupling for enhanced quantum applications.
- To investigate fundamental spin-phonon interactions in a controlled manner.
Main Methods:
- Generating harmonic strain using mechanical methods at room temperature.
- Applying strain to diamond substrates containing NV centers.
- Measuring NV center spin transitions driven by mechanical strain.
Main Results:
- Direct coupling between phonons and NV center spins was successfully demonstrated.
- The mechanical driving of spin transitions was verified by analyzing signal amplitude dependence on strain periodicity.
- Room temperature operation was achieved.
Conclusions:
- Mechanically driven spin-phonon interactions offer a novel pathway for quantum spin control.
- This method enhances NV-based quantum metrology and allows access to all spin-1 states.
- Provides a platform for studying few-spin interactions with phonons.
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