The Quantum Analysis of the Light Produced by Coherently Driven Degenerate Three-Level Atom in a Cavity Containing Parametric Amplifier and Coupled to a Vacuum Reservoir

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dc.contributor.advisorHirpo, Deribe (PhD)
dc.contributor.authorMekete, Antigegn
dc.date.accessioned2022-06-01T06:16:16Z
dc.date.accessioned2023-11-09T11:27:18Z
dc.date.available2022-06-01T06:16:16Z
dc.date.available2023-11-09T11:27:18Z
dc.date.issued2022-04-18
dc.description.abstractIn this thesis, we analyze the statistical and squeezing properties of the light produced by a degenerate three-level atom, whose top and bottom levels are coupled by coherent light, and available in a cavity containing degenerate parametric amplifier and coupled to a vacuum reservoir via a port-mirror. Employing the master equation for the system under consideration, we obtain the equations of evolution for the expectation value of atomic operators and the quantum Langevin equation for the cavity mode operator. Using the steady-state solutions of these equations and the large time approximation, we have determined the mean and variance of photon number, the power spectrum of cavity mode, quadrature variance and quadrature squeezing. We observe that the increase of the amplitude of the driving coherent light and the presence of the parametric amplifier enhance the mean and variance of the photon number. We have also established that the maximum quadrature squeezing is 61% for _ = 0.03 and 70% for _ = 0.06 below the vacuum-state level. Thus, we note that the presence of parametric amplifier has positive impact on the quadrature squeezing.en_US
dc.identifier.urihttp://10.90.10.223:4000/handle/123456789/31840
dc.language.isoenen_US
dc.publisherAddis Ababa Universityen_US
dc.subjectQuantum Analysisen_US
dc.subjectLight Produceden_US
dc.subjectCoherently Drivenen_US
dc.subjectDegenerate three-Level Atomen_US
dc.subjectCavity Containing Parametricen_US
dc.subjectAmplifier and Coupleden_US
dc.subjectVacuum Reservoiren_US
dc.titleThe Quantum Analysis of the Light Produced by Coherently Driven Degenerate Three-Level Atom in a Cavity Containing Parametric Amplifier and Coupled to a Vacuum Reservoiren_US
dc.typeThesisen_US

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