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dc.contributor.authorEleuch, Hichem
dc.contributor.authorTahar Djerad
dc.descriptionCavity quantum electrodynamics (cavity QED) systems are of current interest either for the fundamental aspect and for their potential applications [1-6]. Cavity QED studies the radiative proprieties of atoms conned by boundaries in a dened region of space. They typically involve an atom or an ensemble of atoms interacting with a quantized eld conned in a cavity. Unusual radiative regimes can be created with many interesting applications pertinent to diverse elds such as quantum optics, quantum information and quantum measurements [7-11]. The behavior of the free atomic system is simply obtained by considering a cavity with large size. A prototype of such experiments is devoted to highly excited atoms, commonly called Rydberg atoms, coupled to a high Q-cavity. The unusual properties of Rydberg atoms reveal an interesting aspect of the coupling matter-light and the fundamental concepts of quantum mechanics [12-14]. In cavity QED experiments the dissipation e⁄ects are negligible compared to coherent matter radiation interaction process.en_US
dc.description.abstractStudy of atomic Rydberg states and their interactions with electromagnetic eld is of current interest. Determination of their internal parameters such as oscillator strength and lifetimes are pertinent to diverse elds of applied and fundamental Science. These parameters may be determined from the knowledge of transition atomic probabilities and require accurate electronic wave functions. From another side, measurements su⁄er from inherent di¢ culties and are generally obtained with a limited accuracy. In this chapter, we set up an approach based on the autocorrelation function of the excited atom placed inside a cavity with high quality factor. We envision two excitation regimes namely the strong and the weak pumping laser. Due to their simplicity, Rydberg states are successfully described within the two-level atom model. Making use of appropriate approximations we derive simple and practical expressions of the autocorrelation function of the emitted eld. Then, we show that Rydberg atomic lifetimes are deduced from theses simplied autocorrelation expressions at selected time values. This approach is related to interferometric measurements known to be accurate as compared to traditional methods.en_US
dc.publisherNational Institute of Applied Science and Technologyen_US
dc.subjectRydberg Atomen_US
dc.subjectElectronic Waveen_US
dc.titleRydberg Atoms and Autocorrelation Functionen_US

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