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Seminário do LMCAL com o Prof. Tadas, da Univ. de Nottingham

Data do Evento: 
23/04/2019 - 14:30 até 17:30

Seminário do Laboratório de Manipulação Coerente de Átomos e Luz (LMCAL)

Dia: 23/04/19, às 14h30min, Sala 335 da Ala II, 2º andar

"A Voigt effect 3D Vector Magnetometer"

Prof. Tadas da Universidade de Nottingham

Abstract:

Magnetism plays a fundamental role in nature existing in almost every conceivable domain of the physical world ranging from stars and planets to our brains and hearts. Some magnetic phenomena are easy to observe and measure, whilst others are small and subtle making it almost impossible to detect. Developments in precision magnetometry, utilising the quantum nature of atoms has enabled access to the world of small and subtle enabling access to the understanding of signals in the brain and heart as well as pushing the boundaries of knowledge of the fundamental forces of nature. In this talk we describe a method to dispersively detect all three vector components of an external magnetic field using radio-frequency dressed alkali atoms based on the Voigt effect. To achieve this, we measure the linear birefringence of the radio frequency dressed atomic medium via polarization homodyning. This gives rise to modulated polarization signals at the first and second harmonic of the dre!
 ssing frequency. The vector components of the external magnetic field are mapped onto the quadratures of these harmonics. Our scheme has a simple single axis beam geometry making it advantageous for miniature magnetic field sensors"

Data de Término: 
23/04/2019 - 14:30

Desenvolvido por IFUSP