کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5487727 1523719 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Creation of single-photon entangled states around rotating black holes
ترجمه فارسی عنوان
ایجاد حالت های تک تک فوتون در اطراف چرخش سیاه چاله ها
کلمات کلیدی
چرخش سیاه چاله، اشعه ایکس، کشورهای متخاصم، دولت بل،
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم نجوم و فیزیک نجومی
چکیده انگلیسی
Recently, numerical simulations showed that X-ray photons emitted by accretion disks acquire rotation of polarization angle and orbital angular momentum due to strong gravitational field in the vicinity of the rotating black holes. Based on these two degrees of freedom we construct a bipartite two-level quantum system of the accretion disks photons. To characterize the quantum states of this composite system we consider linear entropy for the reduced density matrix of polarization with the intention to exploit its direct relation with the photons degree of polarization. Accordingly, the minimum degree of polarization of X-ray radiation located in the transition region of the accretion disk indicates a high value of the linear entropy for the photons emitted on this region, inferring a high degree of entanglement in the composite system. We emphasize that for an extreme rotating black hole in the thermal state, the photons with energies at the thermal peak are maximally entangled in polarization and orbital angular momentum, leading to the creation of all four Bell states. Detection and measurement of quantum information encoded in photons emitted in the accretion disk around rotating black holes may be performed by actual quantum information technology.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: New Astronomy - Volume 59, February 2018, Pages 65-70
نویسندگان
,