Electrical Detection and Control of ¹⁴N Nuclear Spin Coherence in NV centers at Room Temperature

Nitrogen-vacancy (NV) centers in diamond are candidates for realizing quantum information processing devices and quantum sensors because their electron spins have a long coherence time at room temperature. The electron spins can be detected by an optical and electrical method [1, 2]. For the further development of the electrical method, here we demonstrated electrical detection and control of a nuclear-spin coherence with an electrically detected electron-nuclear double resonance (EDENDOR) [3]. Using the EDENDOR technique, we observed Rabi oscillations and coherence time (T₂) of the ¹⁴N nuclear spins in NV centers at room temperature. These results are first demonstrations of electrical detection and control of nuclear spin coherence not only in diamond but also in other materials at room temperature.
[1] M. W. Doherty, et al., Phys. Rep. 528, 1 (2013). [2] E. Bourgeois, et al., Nat. Commun. 6, 8577 (2015); F. M. Hrubesch, et al., Phys. Rev. Lett. 118, 037601 (2017); M. Gulka, et al., Phys. Rev. Applied 7, 044032 (2017). [3] F. Hoehne, et al., Phys. Rev. Lett. 106, 187601 (2011).