کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5449977 | 1512858 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Quantum measurements in spin-boson model under non-Markovian environment
ترجمه فارسی عنوان
اندازه گیری کوانتومی در مدل اسپین بوزون در محیط غیر مارکویکی
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
We propose a control approach of the parameter estimation for a two-level quantum system interacting with a bosonic reservoir considering non-Markovian open, dissipative quantum system. We show that the precision of the estimation significantly affected and behaves differently within the framework of the markovian and non-Markovian regimes. The influence of memory effects for an Ohmic reservoir with Lorentz-Drude regularization on the estimation-parameter precision are numerically demonstrated under the following three conditions: Ï0⪡Ïc, Ï0âÏc or Ï0⪢Ïc, where Ï0 is the characteristic frequency of the two-level system, and Ïc is the cut-off frequency of Ohmic reservoir. We investigate the precision rate in high temperature, intermediate temperature, and low temperature reservoirs for various values of the ratio r=Ïc/Ï0 considering manifold external fields. We reveal that the enhancement and preservation of the measurement precision, highly depend on the combination of the external control field, reservoir parameters, and non-Markovian effects.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 91, July 2017, Pages 173-177
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 91, July 2017, Pages 173-177
نویسندگان
K. Berrada, O. Aldaghri,