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برآورد کوانتومی فاز کد شده درکیوبیت های طراحی شده توسط نقص شبکه ای الماس | ||
| فصلنامه علمی اپتوالکترونیک | ||
| مقاله 7، دوره 4، شماره 1 - شماره پیاپی 10، اسفند 1400، صفحه 57-66 اصل مقاله (1.67 M) | ||
| نوع مقاله: پژوهشی | ||
| شناسه دیجیتال (DOI): 10.30473/jphys.2022.65127.1119 | ||
| نویسندگان | ||
| حسین رنگانی جهرمی* 1؛ سمیرا نظیف کار2 | ||
| 1گروه فیزیک، دانشکده علوم پایه، دانشگاه جهرم، جهرم | ||
| 2گروه فیزیک، دانشکده علوم، دانشگاه نیشابور، نیشابور، ایران | ||
| چکیده | ||
| مرکز نیتروژن-جای خالی یک نقص نقطه ای در الماس است که متشکل از یک جفت همسایه از اتم نیتروژن (که جایگزین یکی از اتم های کربن شده است) و یک جای خالی شبکه می‌باشد. این سامانه یکی از کاندیداهای اصلی جهت تحقق عملی پردازش های کوانتومی است. در این مقاله کاربرد چنین سامانه ای در فرآیند برآورد کوانتومی مورد بررسی قرار خواهد گرفت. مخصوصا برآورد فاز اولیه که می تواند اطلاعات مهمی را در خود کد کرده باشد دقیقا بررسی خواهد شد. به علاوه، تاثیر درهمتنیدگی سامانه با محیط و هم چنین وفاداری حالت تحول یافته نسبت به حالت اولیه را بر دقت برآورد فاز مطالعه خواهیم نمود. | ||
| کلیدواژه‌ها | ||
| اطلاعات فیشر کوانتومی؛ نظریه برآورد کوانتومی؛ وفاداری؛ آنتروپی؛ مرکز نیتروژن-جای خالی | ||
| عنوان مقاله [English] | ||
| Quantum estimation of phase encoded into qubits designed by a lattice defect in diamond | ||
| نویسندگان [English] | ||
| Hossein Rangani Jahromi1؛ Samira Nazifkar2 | ||
| 1Department of Physics, Jahrom University, Jahrom, Iran | ||
| 2Physics Department,,. University of Neyshabur.Neyshabur. Iran. | ||
| چکیده [English] | ||
| Nitrogen-vacancy center, consisting of a nearest-neighbor pair of a nitrogen atom, which substitutes for a carbon atom, and a lattice vacancy, is a point defect in diamond. This system is one of the most important candidates for implementing quantum information processing. In this paper, the application of such a system in the process of quantum estimation is investigated. In particular, the estimation of the initial phase, which can encode significant information, is examined precisely. In addition, we study the effect of the entanglement between the system and its environment as well as the fidelity of the evolved state to the initial one, on the accuracy of the phase estimation. | ||
| کلیدواژه‌ها [English] | ||
| Quantum Fisher information, Quantum estimation theory, Fidelity, Entropy, Nitrogen-Vacancy center | ||
| مراجع | ||
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آمار تعداد مشاهده مقاله: 453 تعداد دریافت فایل اصل مقاله: 319 |
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