Dual-frequency spin-resonance spectroscopy of diamond nitrogen-vacancy centers in zero magnetic field
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2019-07-08 |
| Journal | Physical review. A/Physical review, A |
| Authors | A. K. Dmitriev, H. Y. Chen, Gregory D. Fuchs, A. K. VershovskiÄ |
| Institutions | Cornell University, Ioffe Institute |
| Citations | 20 |
Abstract
Section titled āAbstractāThe methods for controlling spin states of negatively charged\nnitrogen-vacancy (NV) centers using microwave (MW) or radiofrequency (RF)\nexcitation fields for electron spin and nuclear spin transitions are effective\nin strong magnetic fields where a level anti-crossing (LAC) occurs. A LAC can\nalso occur at zero field in the presence of transverse strain or electric\nfields in the diamond crystal, leading to mixing of the spin states. In this\npaper, we investigate zero-field LAC of NV centers using dual-frequency\nexcitation spectroscopy. Under RF modulation of the spin states, we observe\nsideband transitions and Autler-Townes splitting in the optically detected\nmagnetic resonance (ODMR) spectra. Numerical simulations show that the\nsplitting originates from Landau-Zener transition between electron spin\n|$\pm$1> states, which potentially provides a new way of manipulating NV center\nspin states in zero or weak magnetic field.\n