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Cavity-mediated stationary atom-mirror entanglement in the presence of photothermal effects
, Article Physics Letters, Section A: General, Atomic and Solid State Physics ; Volume 376, Issue 45 , 2012 , Pages 2955-2961 ; 03759601 (ISSN) ; Bahrampour, A. R ; Sharif University of Technology
2012
Abstract
We study stationary entanglement properties of an optomechanical system containing an atomic ensemble. We focus onto the case of the movable mirror strongly coupled to the cavity field through both radiation pressure and photothermal force. Exploiting a quantum Langevin equation approach we investigate the bipartite entanglement properties of various bipartite subsystems as well as stationary tripartite entanglement of the system. We particularly study robustness of the atom-mirror entanglement against temperature. We show that, even though the photothermal force is a dissipative force, it can significantly improve the cavity mediated atom-mirror entanglement
Entanglement and Decoherence in Optomechanical Systems Coupled through Photothermal Effects
, Ph.D. Dissertation Sharif University of Technology ; Bahrampour, Alireza (Supervisor)
Abstract
Optomechanical systems have attracted considerable attention in the last decade. Such a raising prominence is mainly due to its capability in providing new insight into the quantum behavior of macroscopic objects and exploring the interface between quantum and classical mechanics. Alongside this fundamental quest, cavity optomechanics has many other benefits, ranging from very precise measurements on forces and positions to quantum information processing. In this thesis, we investigate quantum properties of such systems. Particularly, we study cooling of the mechanical resonator toward its ground state and the entanglement between this mechanical resonator and the cavity field. Cooling the...
An Experimental Study of Cancer Treatment Using Combined Hyperthermia and Chemotherapy Methods
, Ph.D. Dissertation Sharif University of Technology ; Vosoghi, Manoucher (Supervisor) ; Hormozinezhad, Mohammad Reza (Supervisor) ; Dinarvand, Rasoul (Supervisor) ; Iraji Zad, Azam (Co-Advisor)
Abstract
Cancer treatment is one of the most challenging issues of recent years. Extensive researches have been conducted in various fields of medicine, pharmacy, and medical physics in this regard. Today, considering nanotechnology developments, researchers believe that full cancer treatment is possible through the use of nano-systems designed with scientific background to overcome the defects of previous methods. In this research, the main purpose is to design and synthesize multifunctional hybrid nanostructures with favorable optical and magnetic properties providing a way to combine chemotherapy and thermal treatment. Accordingly, two different structures were designed and experimentally...