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مقالۀ پژوهشی: سرشت غیرمارکوفی و حد سرعت کوانتومی در دینامیک گسیل خودبهخودی گسیلنده کوانتومی در مجاورت نانوساختار هسته-پوسته پلاسمونی | ||
| فیزیک کاربردی ایران | ||
| دوره 13، شماره 3 - شماره پیاپی 34، مهر 1402، صفحه 48-64 اصل مقاله (2.3 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22051/ijap.2023.42677.1311 | ||
| نویسندگان | ||
| نرگس ایمانی1؛ مالک باقری هارونی* 2 | ||
| 1دانشجوی دکتری، دانشکده فیزیک، دانشگاه اصفهان، اصفهان، ایران | ||
| 2دانشیار، گروه پژوهشی اپتیک کوانتومی، دانشکده فیزیک، دانشگاه اصفهان، اصفهان، ایران | ||
| چکیده | ||
| یک سامانه آمیخته شامل یک گسیلنده کوانتومی در همسایگی یک نانوساختار هسته- پوسته پلاسمونی در هوا در نظر گرفته شده و فرایند گسیل خودبه‌خودیِ گسیلنده مورد بررسی قرار گرفته است. هدف، بررسی اثر سامانه پلاسمونی بر حد سرعت کوانتومی و دینامیک غیرمارکوفی سامانه است. با استفاده از تابع گرین دیادیک سامانه تاثیر پارامترهای هندسی چون ضخامت پوسته‌ی نانوساختار پلاسمونی و فاصله گسیلنده تا نانوساختار بر تحول و رفتار فیزیکی پارامترهای مورد نظر بررسی شده است. بر اساس نتایج به دست آمده، با افزایش فاصله گسیلنده از نانوساختار، دینامیک گسیل خودبهخودی از غیرمارکوفی به مارکوفی تبدیل شده و مقدار سنجه غیرمارکوفی به صفر میل می‌کند. در این شرایط حد سرعت کوانتومی افزایش یافته و برابر با زمان تحول سامانه می‌شود. افزون بر این، با افزایش ضخامت پوسته، متوسط میزان سنجه غیرمارکوفی کاهش می‌یابد. | ||
| کلیدواژه‌ها | ||
| سامانه آمیخته؛ پلاسمونیک کوانتومی؛ حد سرعت کوانتومی؛ سنجه غیرمارکوفی | ||
| عنوان مقاله [English] | ||
| Research Paper: Non-Markovian Nature and Quantum Speed Limit in The Spontaneous Emission Dynamics of a Quantum Emitter in The Vicinity of a Plasmonic Core-shell Nanostructure | ||
| نویسندگان [English] | ||
| Narges Imani1؛ Malek Bagheri Harouni2 | ||
| 1PhD student, Department of Physics, University of Isfahan, Isfahan, Iran | ||
| 2Associate Professor, Quantum Optics Group, Department of Physics, University of Isfahan, Isfahan, Iran | ||
| چکیده [English] | ||
| A hybrid system including a quantum emitter in the vicinity of a plasmonic core-shell nanostructure in the air is considered, and the spontaneous emission process of the emitter is investigated. The aim is to examine the effect of the plasmonic system on the quantum speed limit and the non-Markovian dynamics of the system. Using the dyadic Green's function of the system, the impact of geometric parameters such as the thickness of the plasmonic nanostructure shell and the distance between the emitter and the nanostructure on the evolution and physical behavior of the desired parameters has been investigated. According to the obtained results, by increasing the distance of the emitter from the nanostructure, the dynamics of spontaneous emission change from non-Markovian to Markovian, and the value of the non-Markovian measure tends to zero. In this condition, the quantum speed limit increases and becomes equal to the evolution time of the system. In addition, as the thickness of the shell increases, the mean value of the non-Markovian measure decreases. | ||
| کلیدواژه‌ها [English] | ||
| Hybrid System, Quantum Plasmonic, Quantum Speed Limit, Non-Markovian Measure | ||
| مراجع | ||
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