Speaker
Iagoba Apellaniz
Description
We calculate precision bounds for estimating the gradient of the magnetic field based on the quantum Fisher information for various types of ensembles, such as for example, a single atomic ensemble with an arbitrary density profile, where the atoms cannot be addressed individually and which is a very relevant case for experiments.
We present a method to find spin states for gradient magnetometry with two spatially separated atomic ensembles based on states for sensing a global phase shift, such as the GHZ state or the Dicke state.
[1] I. Apellaniz et al., Phys. Rev. A, 97 053603 (2018)
[2] G. Vitagliano et al., arXiv:2104.05663 (2021)
Author
Co-authors
Dr
Iñigo Urizar-Lanz
Zoltán Zimborás
Dr
Philipp Hyllus
(Universidad del País Vasco)
Prof.
Géza Tóth
(Universidad del País Vasco)
