Dynamics of Three-Level Atom Pumped by Coherent Light and With Spontaneous Emission
| dc.contributor.advisor | Kassahun, Fesseha (PhD) | |
| dc.contributor.author | Fekade, Teshome | |
| dc.date.accessioned | 2019-09-16T12:51:39Z | |
| dc.date.accessioned | 2023-11-09T11:26:05Z | |
| dc.date.available | 2019-09-16T12:51:39Z | |
| dc.date.available | 2023-11-09T11:26:05Z | |
| dc.date.issued | 2018-08-02 | |
| dc.description.abstract | In this research we have studied the squeezing and statistical properties of the cavity light generated by a coherently driven three-level atom with an open cavity coupled to a two-mode vacuum reservoir via a single-port mirror. We carry out our calculation by putting the noise operators associated with the vacuum reservoir in normal order. Employing the master equation and the quantum Langevin equations, we obtained the equations of evolution of the expectation values of the atomic operators. Then applying the resulting solutions, we have calculated the mean photon number, variance of the photon number, and the quadrature variance for the single-modes cavity light as well as the two-mode cavity light. Moreover, we have obtained the quadrature squeezing for the two-mode cavity light. We have noticed that the mean photon number, the variance of the photon number for light mode a, the variance of the photon number for the twomode cavity light, and the quadrature variance of light mode a for = 0 is greater than for = 0.1. The quadrature variance of light mode b in the absence of spontaneous emission ( = 0) is less than in the presence of spontaneous emission ( = 0.1). We have also found that the maximum quadrature squeezing of the two-mode cavity light is 43.42% for both = 0 and = 0.1 below the vacuum-state level. | en_US |
| dc.identifier.uri | http://10.90.10.223:4000/handle/123456789/19068 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Dynamics of Three-Level Atom | en_US |
| dc.subject | Coherent Light and With | en_US |
| dc.subject | Spontaneous Emission | en_US |
| dc.title | Dynamics of Three-Level Atom Pumped by Coherent Light and With Spontaneous Emission | en_US |
| dc.type | Thesis | en_US |