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A dual sensor for metrology and gravimetry

Grant number: 18/02301-1
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): June 01, 2018
Effective date (End): July 31, 2019
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal Investigator:Philippe Wilhelm Courteille
Grantee:Klara Rhaissa Burlamaqui Theophilo
Home Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant:13/04162-5 - Development of quantum sensors based on ultracold atoms, AP.TEM

Abstract

The thematic project addresses the construction of a sensor that can simultaneously be used as a standard for optical frequencies and gravimetry. Conventional standards consist in a laser oscillator locked to an ultra-stable optical cavity through a fast electronic servo using the Pound-Drever-Hall technique, which offers a good short-term stability. The accuracy and reproducibility of the device are obtained via spectroscopy of a very narrow resonance of an atomic cloud which, as a natural constant, is invariant in time. The concept of our standard is different, since the atoms are directly inserted in the cavity, thus taking advantage of the superradiant acceleration of the interaction of the light with the atoms. The post-doctor will work on the construction of this sensor.