Showing 4 results for Coherent State
Mehdi Miri, Sina Khorasani,
Volume 4, Issue 1 (1-2010)
Abstract
We generalized the squeeze and displacement operators of the one-dimensional harmonic oscillator to the three-dimensional case and based on these operators we construct the corresponding coherent and squeezed states. We have also calculated the Wigner function for the three-dimensional harmonic oscillator and from the analysis of time evolution of this function, the quantum Liouville equation is also presented. Further properties of the quantum states including Mandel’s and quadrature squeezing parameters are discussed as well.
Rasoul Roknizadeh, Malek Bagheri Harouni,
Volume 7, Issue 1 (6-2013)
Abstract
We consider the interaction of quantum light with an ideal semiconductor microcavity. We investigate photon statistics in different conditions and the presence of detuning and exciton-exciton interaction. We show that in the resonant interaction and absence of the exciton-exciton interaction, the state of the whole system can be considered as coherent state. According to our results, it turns out that photon statistics strongly depends on the initial state of the system. It is found that it is possible to generate squeezed light in the presence of the exciton-exciton interaction.
Dr. Elnaz Pilehvar, Dr. Ehsan Amooghorban, Prof. Mohammad Kazem Moravvej-Farshi,
Volume 15, Issue 2 (7-2021)
Abstract
We investigate the propagation of the normal two-photon number state and coherent state of light through a dispersive non-Hermitian bilayer structure composed of gain and loss layers, particularly at a discrete set of frequencies for which this structure holds PT-symmetric. We reveal how dispersion and gain/loss-induced noises in such a bilayer structure affect the antibunching property of the incident light. For this purpose, we have calculated the second-order coherence of the output state of the bilayer. Varying the loss layer coefficient, we show that the antibunching property of the incident light only retains to some extent, for small values of loss coefficient for the transmitted number state.
Mojgan Momeni-Demneh, Ali Mahdifar, Rasoul Roknizadeh,
Volume 16, Issue 1 (1-2022)
Abstract
ABSTRACT—One of the nonlinear optical phenomena which arise out of a χ(3) nonlinearity, is the intensity dependence of the refractive index. In this paper, we describe this phenomenon based on the nonlinear coherent states approach. We show that the deformed two-dimensional oscillator algebra can be used to describe this nonlinear optical system. Then, we construct the nonlinear coherent states for this nonlinear optical system and study their quantum statistical properties. Finally, we find that by changing nonlinearity of the media, it is possible to control the nonclassical properties of the system.
