کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1854946 1529863 2014 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Entanglement propagation and typicality of measurements in the quantum Kac ring
ترجمه فارسی عنوان
انتشار نفوذ و ویژگی های اندازه گیری در حلقه کوانتوم کاک
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
چکیده انگلیسی

We study the time evolution of entanglement in a new quantum version of the Kac ring, where two spin chains become dynamically entangled by quantum gates, which are used instead of the classical markers. The features of the entanglement evolution are best understood by using knowledge about the behavior of an ensemble of classical Kac rings. For instance, the recurrence time of the quantum many-body system is twice the length of the chain and “thermalization” only occurs on time scales much smaller than the dimension of the Hilbert space. The model thus elucidates the relation between the results of measurements in quantum and classical systems: While in classical systems repeated measurements are performed over an ensemble of systems, the corresponding result is obtained by measuring the same quantum system prepared in an appropriate superposition repeatedly.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Physics - Volume 348, September 2014, Pages 324–340
نویسندگان
, , ,