Coherent dynamics of multi-spin V[Formula: see text] center in hexagonal boron nitride

Wei Liu; Viktor Ivády; Zhi-Peng Li; Yuan-Ze Yang; Shang Yu; Yu Meng; Zhao-An Wang; Nai-Jie Guo; Fei-Fei Yan; Qiang Li; Jun-Feng Wang; Jin-Shi Xu; Xiao Liu; Zong-Quan Zhou; Yang Dong; Xiang-Dong Chen; Fang-Wen Sun; Yi-Tao Wang; Jian-Shun Tang; Adam Gali; Chuan-Feng Li; Guang-Can Guo

doi:10.1038/s41467-022-33399-2

Coherent dynamics of multi-spin V[Formula: see text] center in hexagonal boron nitride

Nat Commun. 2022 Sep 29;13(1):5713. doi: 10.1038/s41467-022-33399-2.

Authors

Wei Liu^#^{1

2

3}, Viktor Ivády^#^{4

5

6}, Zhi-Peng Li^{1

2

3}, Yuan-Ze Yang^{1

2

3}, Shang Yu^{1

2

3}, Yu Meng^{1

2

3}, Zhao-An Wang^{1

2

3}, Nai-Jie Guo^{1

2

3}, Fei-Fei Yan^{1

2

3}, Qiang Li^{1

2

3}, Jun-Feng Wang^{1

2

3}, Jin-Shi Xu^{1

2

3}, Xiao Liu^{1

2

3}, Zong-Quan Zhou^{1

2

3}, Yang Dong^{1

2

3}, Xiang-Dong Chen^{1

2

3}, Fang-Wen Sun^{1

2

3}, Yi-Tao Wang^{1

2

3}, Jian-Shun Tang^{1

2

3}, Adam Gali^{6

7}, Chuan-Feng Li^{1

2

3}, Guang-Can Guo^{1

2

3}

Affiliations

¹ CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, P. R. China.
² CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026 P. R. China.
³ Hefei National Laboratory, University of Science and Technology of China, Hefei, 230088 China.
⁴ Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Street 38, D-01187 Dresden, Germany.
⁵ Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden.
⁶ Wigner Research Centre for Physics, PO Box 49, H-1525 Budapest, Hungary.
⁷ Department of Atomic Physics, Institute of Physics, Budapest University of Technology and Economics, Műegyetem rakpart 3., H-1111 Budapest, Hungary.

^# Contributed equally.

Abstract

Hexagonal boron nitride (hBN) has recently been demonstrated to contain optically polarized and detected electron spins that can be utilized for implementing qubits and quantum sensors in nanolayered-devices. Understanding the coherent dynamics of microwave driven spins in hBN is of crucial importance for advancing these emerging new technologies. Here, we demonstrate and study the Rabi oscillation and related phenomena of a negatively charged boron vacancy (V[Formula: see text]) spin ensemble in hBN. We report on different dynamics of the V[Formula: see text] spins at weak and strong magnetic fields. In the former case the defect behaves like a single electron spin system, while in the latter case it behaves like a multi-spin system exhibiting multiple-frequency dynamical oscillation as beat in the Ramsey fringes. We also carry out theoretical simulations for the spin dynamics of V[Formula: see text] and reveal that the nuclear spins can be driven via the strong electron nuclear coupling existing in V[Formula: see text] center, which can be modulated by the magnetic field and microwave field.