Generation of Squeezed Light by Optically Pumped Two-Level Atom in a Cavity Containing Parametric Amplifier and Coupled to Squeezed Vacuum Reservoir
| dc.contributor.advisor | Hirpo, Deribe (PhD) | |
| dc.contributor.author | Desta, Mulu | |
| dc.date.accessioned | 2022-05-30T06:57:36Z | |
| dc.date.accessioned | 2023-11-09T11:27:16Z | |
| dc.date.available | 2022-05-30T06:57:36Z | |
| dc.date.available | 2023-11-09T11:27:16Z | |
| dc.date.issued | 2022-04-18 | |
| dc.description.abstract | In this thesis, we have analyzed the quantum properties of light generated by coherently driven two level atom in a cavity containing a parametric amplifier and coupled to a squeezed vacuum reservoir. The equations of evolution for the expectation values of cavity mode and atomic operators are determined with the aid of the system’s master equation. Applying the large time approximation to the cavity mode quantum Langiven equation, we obtain the steady-state solutions for the expectation values of cavity mode and atomic operators. Utilizing these solutions, we calculate the mean photon number, the power spectrum, second-order correlation function, quadrature variance and squeezing of the cavity mode. Our results indicate that the two-level atom has larger probability of being found in the lower level than being found in the upper level and the photons of the fluorescent light produced by the two-level atom are found to be anti-bunched. Moreover, the cavity mode is observed to be squeezed, with squeezing being occurring in the plus quadrature. In addition, the squeezing increases as the amplitude of driving coherent light increases; with a maximum squeezing of 60% for (_ = 0.1) and 50% in the absence of parametric amplifier. And the degree of squeezing enhances with the increase of stimulated emission decay constant and reaches a maximum value of 70% below the vacuum state level. | en_US |
| dc.identifier.uri | http://10.90.10.223:4000/handle/123456789/31811 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Generation | en_US |
| dc.subject | Squeezed Light | en_US |
| dc.subject | Optically Pumped Two-Level Atom | en_US |
| dc.subject | Cavity Containing | en_US |
| dc.subject | Parametric Amplifier | en_US |
| dc.subject | Coupled to Squeezed Vacuum Reservoir | en_US |
| dc.title | Generation of Squeezed Light by Optically Pumped Two-Level Atom in a Cavity Containing Parametric Amplifier and Coupled to Squeezed Vacuum Reservoir | en_US |
| dc.type | Thesis | en_US |