Pre-submission Thesis Presentation

Abstract:  Rydberg atoms are giant atoms with the outer electron in a highly excited state with large values of the principal quantum number n. These excited atoms with a weakly bound valence electron are highly sensitive to external fields, imparting extraordinary characteristics for Quantum sensing of electromagnetic fields. Their large long-range dipole-dipole and Van der Waals interactions make them an excellent platform for Quantum simulation of many-body physics in condensed matter systems. In this thesis, I have presented a detailed description of the building up of our cold- Rydberg experimental setup where we have studied Quantum interactions in an ensemble of Rydberg atoms. In this talk, I will describe our experimental setup and methods for the realisation of both thermal as well as ultra-cold Rydberg atoms. I will discuss our precise measurement of the absolute transition frequencies of highly excited Rydberg states. I will describe our results on Doppler-Enhanced Quantum magnetometry which has promising applications in Quantum sensing with Rydberg atoms. I will also present our recent observations on the effect of interatomic interaction in the Autler-Townes splitting signal and observations of signatures of the Rydberg blockade phenomena. Our measurements on highly excited Rydberg atoms are directed towards Quantum sensing, Quantum information processing and Quantum simulation of many-body physics with individual Rydberg atoms in an array of optical tweezers. 

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