The study of quantum speed limit time in a quantum critical environment
Quantum theory sets a bound on the speed of quantum evolution. The shortest time needed for a quantm system to evolve from an initial state to the target state is known as the quantum speed limit time. The study of this time in open and closed quantum systems has been the subject of much work in qua...
Main Author: | |
---|---|
Format: | Article |
Language: | English |
Published: |
Isfahan University of Technology
2022-02-01
|
Series: | Iranian Journal of Physics Research |
Subjects: | |
Online Access: | http://ijpr.iut.ac.ir/article_1754_eb06a77e0d2cdb88ae0fea6f2182a0ae.pdf |
_version_ | 1811226804849999872 |
---|---|
author | S Haseli |
author_facet | S Haseli |
author_sort | S Haseli |
collection | DOAJ |
description | Quantum theory sets a bound on the speed of quantum evolution. The shortest time needed for a quantm system to evolve from an initial state to the target state is known as the quantum speed limit time. The study of this time in open and closed quantum systems has been the subject of much work in quantum information theory. Quantum speed limit time is inversely related to the evolution rate of a quantum process. This relation is such that the speed of evolution decreases with increasing quantum speed limit time and vice versa. In this work we study the QSL time for the case in which a qubit interacts with a quantum critical environment. We choose the environment to be an Ising spin chain in a transverse field. It is observed that for the quantum speed limit time has a direct relation with quantum coherence of the initial state of the system. We will also study the effect of perturbation coupling on quantum speed limit time. It is observed that the quantum speed limit time decreases with increasing the coupling parameter. It is also observed that the quantum speed limit time decreases with increasing the number of spin in spin chain. |
first_indexed | 2024-04-12T09:32:28Z |
format | Article |
id | doaj.art-6d5c30229a874de0ab18094b2ce8e21c |
institution | Directory Open Access Journal |
issn | 1682-6957 2345-3664 |
language | English |
last_indexed | 2024-04-12T09:32:28Z |
publishDate | 2022-02-01 |
publisher | Isfahan University of Technology |
record_format | Article |
series | Iranian Journal of Physics Research |
spelling | doaj.art-6d5c30229a874de0ab18094b2ce8e21c2022-12-22T03:38:20ZengIsfahan University of TechnologyIranian Journal of Physics Research1682-69572345-36642022-02-0121483383910.47176/ijpr.21.4.211801754The study of quantum speed limit time in a quantum critical environmentS Haseli0Department of Physics, Faculty of Environment, Urmia University of Technology, Urmia, IranQuantum theory sets a bound on the speed of quantum evolution. The shortest time needed for a quantm system to evolve from an initial state to the target state is known as the quantum speed limit time. The study of this time in open and closed quantum systems has been the subject of much work in quantum information theory. Quantum speed limit time is inversely related to the evolution rate of a quantum process. This relation is such that the speed of evolution decreases with increasing quantum speed limit time and vice versa. In this work we study the QSL time for the case in which a qubit interacts with a quantum critical environment. We choose the environment to be an Ising spin chain in a transverse field. It is observed that for the quantum speed limit time has a direct relation with quantum coherence of the initial state of the system. We will also study the effect of perturbation coupling on quantum speed limit time. It is observed that the quantum speed limit time decreases with increasing the coupling parameter. It is also observed that the quantum speed limit time decreases with increasing the number of spin in spin chain.http://ijpr.iut.ac.ir/article_1754_eb06a77e0d2cdb88ae0fea6f2182a0ae.pdfquantum speed limitopen quantum systemquantum critical environment |
spellingShingle | S Haseli The study of quantum speed limit time in a quantum critical environment Iranian Journal of Physics Research quantum speed limit open quantum system quantum critical environment |
title | The study of quantum speed limit time in a quantum critical environment |
title_full | The study of quantum speed limit time in a quantum critical environment |
title_fullStr | The study of quantum speed limit time in a quantum critical environment |
title_full_unstemmed | The study of quantum speed limit time in a quantum critical environment |
title_short | The study of quantum speed limit time in a quantum critical environment |
title_sort | study of quantum speed limit time in a quantum critical environment |
topic | quantum speed limit open quantum system quantum critical environment |
url | http://ijpr.iut.ac.ir/article_1754_eb06a77e0d2cdb88ae0fea6f2182a0ae.pdf |
work_keys_str_mv | AT shaseli thestudyofquantumspeedlimittimeinaquantumcriticalenvironment AT shaseli studyofquantumspeedlimittimeinaquantumcriticalenvironment |