Rotating frame spin dynamics of a Nitrogen-Vacancy center in a diamond nanocrystal

Abstract

We investigate the spin dynamics of a Nitrogen-Vacancy (NV) center contained in an individual diamond nanocrystal in the presence of continuous microwave excitation. Upon periodic reversal of the microwave phase, we observe a train of 'Solomon echoes' that effectively extends the system coherence lifetime to reach several tens of microseconds, depending on the microwave power and phase inversion rate. Starting from a model where the NV center interacts with a bath of paramagnetic defects on the nanocrystal surface, we use average Hamiltonian theory to compute the signal envelope from its amplitude at the echo maxima. Comparison between the effective Rabi and Solomon propagators shows that the observed response can be understood as a form of higher-order decoupling from the spin bath.

References in corpus (5)

• Dynamical decoupling and noise spectroscopy with a superconducting flux qubit
• Universal dynamical decoupling of a single solid-state spin from a spin bath
• Extending Quantum Coherence in Diamond
• Imaging mesoscopic nuclear spin noise with a diamond magnetometer
• The diamond Nitrogen-Vacancy center as a probe of random fluctuations in a nuclear spin ensemble

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• Modulated Continuous Wave Control for Energy-efficient Electron-nuclear Spin Coupling
• Mapping of Spin-Wave Transport in Thulium Iron Garnet Thin Films Using Diamond Quantum Microscopy
• An efficient and low-cost method to create high-density nitrogen-vacancy centers in CVD diamond for sensing applications
• Decay of the rotary echoes for the spin of a nitrogen-vacancy center in diamond
• Cluster-correlation expansion for studying decoherence of clock transitions in spin baths
• Protecting the $\sqrt{SWAP}$ operation from general and residual errors by continuous dynamical decoupling
• Preserving coherent spin and squeezed spin states of a spin-1 Bose-Einstein condensate with rotary echoes
• Quadrupole transitions and quantum gates protected by continuous dynamic decoupling
• Continuous dynamical decoupling and decoherence-free subspaces for qubits with tunable interaction