Response dynamics of an alkali-metal-noble-gas hybrid trispin system

We study the dynamics of a comagnetometer based on an alkali-metal-noble-gas hybrid tri-spin system by numerically solving coupled Bloch equations. A thorough analysis of the response dynamics is carried out in the standard experimental regime where the spin system can be mapped to a damped harmonic oscillator. The results show that a linear increasing response of the comagnetometer signal is found when the noble-gas nuclear spin magnetization and the alkali-metal spin lifetime parameters satisfy an overdamping condition. We find that an upper limit for the signal amplitude of the comagnetometer is imposed by the inherent dynamics of the hybrid tri-spin system. The results agree with currently available experimental data and provide useful guiding for future experiments.

Automated summary

The dynamics of a comagnetometer based on an alkali-metal-noble-gas hybrid tri-spin system were studied. Results showed a linear increasing response of the comagnetometer signal under certain parameters satisfying an overdamping condition. The inherent dynamics of the hybrid tri-spin system impose an upper limit for the signal amplitude of the comagnetometer, with results consistent with current experimental data and providing guidance for future experiments.