Quantum beats and metrology in a rapidly rotating Nitrogen-Vacancy center
Weijun Cheng, Tian Tian, and Zhihai Wang
TL;DR
This paper investigates quantum beats and enhanced quantum metrology in a rapidly rotating Nitrogen-Vacancy center system under external magnetic fields, revealing new dynamical behaviors and measurement improvements.
Contribution
It introduces the study of quantum beats and metrology enhancement in a rotating NV center system, leveraging recent nano-rotor experiments and superposition effects.
Findings
Prediction of quantum beats in the time domain.
Quantum metrology can be improved via superposition effects.
Rotation frequency close to NV intrinsic frequency enhances effects.
Abstract
In this paper, we study the dynamical behavior and quantum metrology in a rotating Nitrogen-Vacancy(NV) center system which is subject to an external magnetic field. Based on the recently realized rapid rotation of nano-rotor [J. Ahn, et. al., Phys. Rev. Lett. 121, 033603 (2018) and R. Reimann, et. al., Phys. Rev. Lett. 121, 033602 (2018)], the frequency of the rotation is close to that of the intrinsic frequency of the NV center system, we predict the quantum beats phenomenon in the time domain and show that the quantum metrology can be enhanced by the superposition effect in our system.
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