ELFT HÍRADÓ

[Szeminárium koordinátor <sem-admin AT wigner.hun-ren.hu>]

SZFI SeminarManojkumar, VishwakarmaHUN-REN Wigner RCP SZFIThree-dimensional 
magnetic field sensing using alkali atomsTuesday, 15 September 2026, 10:00, 
KFKI Campus, Bldg. 1, 2nd floor, Conference RoomAbstract: Alkali atoms are 
promising candidates for highly sensitive magnetic field detection, with 
sensitivities reaching tens of fT/√Hz regime [1]. Conventional magnetometry 
using alkali-atomic vapor relies on the absorption and transmission of light, 
typically using point-detection technique with photodiodes. Despite being 
highly sensitive, this approach does not retain information about the spatial 
direction of the magnetic field. However, by the spatial shaping of the 
polarization of input optical beam, spatial varying atom-light interaction 
can be made sensitive to the orientation of the magnetic field. The resulting 
spatial dependence of the optical absorption and transmission encodes 
information about the magnetic field vector enabling the measurement of 
strength and orientation of the magnetic field. This talk is based on 
investigating the measurement of the magnetic field strength and orientation 
by the interaction of a radially polarized beam with Rubidium atoms at room 
temperature.[1] Kitching, John, et al. "Uncooled, millimeter-scale atomic 
magnetometers with femtotesla sensitivity." SENSORS, 2009 IEEE. IEEE, 
2009. Minden érdeklődőt szívesen látunk! - Everyone is welcome to 
attend.Tamás Pusztaisem-admin AT wigner.hun-ren.hu