The Large Optical Structure Designed by Topology Optimization Methodology

control of the optical properties of nanoparticles by laser fields

در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...

Experimentally demonstrated a unidirectional electromagnetic cloak designed by topology optimization

Quantifying the topology of large–scale structure

We propose and investigate a new algorithm for quantifying the topological properties of cosmological density uctuations. We rst motivate this algorithm by drawing a formal distinction between two de nitions of relevant topological characteristics, based on concepts, on the one hand, from di erential topology and, on the other, from integral geometry. The former approach leads one to concentrat...

Gain optimization of the optical waveguide based on the quantum box core/shell structure

In order to implement an integrated optical quantum circuit, designing waveguides based on the quantum box is of prime importance. To do this we have investigated optical waveguide both with and without optical pumping. The rate of absorption and emission using an array of AlGaAs/GaAs quantum box core/shell structure in the optical waveguide with various pumping intensities has computed. By con...

Topology of Large - Scale Structure by Galaxy Type : Hydrodynamic Simulations

The topology of large scale structure is studied as a function of galaxy type using the genus statistic. In hydrodynamical cosmological CDM simulations, galaxies form on caustic surfaces (Zeldovich pancakes) then slowly drain onto laments and clusters. The earliest forming galaxies in the simulations (de ned as \ellipticals") are thus seen at the present epoch preferentially in clusters (tendin...