پديد آورنده :
پاكدل، ليلا
عنوان :
ايجاد حالت برهم نهيده كوانتومي با استفاده از روش بي‌دررو
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان : دانشگاه صنعتي اصفهان
صفحه شمار :
ده، 74ص: مصور، نمودار
استاد راهنما :
مهدي عبدي، وحيد سالاري
استاد مشاور :
كيوان آقابابايي ساماني
توصيفگر ها :
سيستم‌هاي كوانتومي ماكروسكوپي , حالت‌هاي بر‌هم‌نهيده , روش بي‌دررو , گرافن , واهمدوسي
استاد داور :
مالك باقري هاروني، فرهاد فضيله
تاريخ ورود اطلاعات :
1400/01/22
تاريخ ويرايش اطلاعات :
1400/01/23
چكيده انگليسي :
Generating quantum superposition state via adiabatic Evolution Leila Pakdel l pakdel@ph iut ac ir June 19 2020 Department of Physics Isfahan University of Technology Isfahan 84156 83111 IranDegree Master of Science Language FarsiSupervisors Mehdi Abdi Assist Prof mehabdi@cc iut ac ir Vahid Salari Assist Prof vahidsalari@cc iut ac ir AbstractThe transition of a quantum system to its classical behavior is still under debate and despite nearly a centuryof physicists studies there is still no definitive approach One of the mechanisms that could help for under standing how this transition works is the provision of macroscopic objects in spatial quantum superpositionstates In fact the large size of macroscopic quantum systems prevents them from being isolated A system thatis not well isolated is constantly interacting with the environment and this causes the system to be observed bythe environment and so collapsing to a classical state In other words such interactions destroy the quantumbehavior of the system So far there have been proposals for generating superposition states in nanomechanicalsystems In this dissertation we exploit an adiabatic method to achieve spatial superposition state of a mechan ical oscillator In this approach we consider a time dependent potential for the evolution of the mechanicalelement and move it from the ground state of the relatively harmonic oscillator potential to the ground state ofdouble well potential The ground state of the double well potential gives the desired superposition state Toimplement it we propose to use a superconducting qubit that is coupled to the mechanical motion of a mono layer graphene sheet The state of the mechanical element is confirmed by its coupling to a superconductingqubit and its decoherence which allows the transition from quantum to classical is examined KeywordsMacroscopic Quantum Systems adiabatic method graphene decoherence
استاد راهنما :
مهدي عبدي، وحيد سالاري
استاد مشاور :
كيوان آقابابايي ساماني
استاد داور :
مالك باقري هاروني، فرهاد فضيله
