تحول زمانی همبستگی کوانتمی و رابطه آنتروپی عدم قطعیت در حضور حافظه کوانتمی تحت واهمدوسی و هامیلتونی پیچش تک-محوری

پورکریمی, محمد رضا

doi:10.22055/jrmbs.2020.15560

تحول زمانی همبستگی کوانتمی و رابطه آنتروپی عدم قطعیت در حضور حافظه کوانتمی تحت واهمدوسی و هامیلتونی پیچش تک-محوری

نوع مقاله : مقاله پژوهشی کامل

نویسنده

محمد رضا پورکریمی

گروه فیزیک، دانشگاه سلمان فارسی، کازرون، کازرون، ایران

10.22055/jrmbs.2020.15560

چکیده

در این مقاله یک سیستم متقارن N ذره‌ای با اسپین 2/1 که تحت هامیلتونی پیچش تک-محوری قرار دارد را در نظر می‌گیریم. سپس با اعمال کانال‌های مختلف نویز دار، همچون کانال میرایی دامنه، کانال فاز-گردان و کانال میرایی فاز، تحول زمانی همبستگی کوانتمی و رابطه آنتروپی عدم قطعیت در حضور حافظه کوانتمی را بدست می‌آوریم. مقایسه رفتار آنتروپی عدم قطعیت و همبستگی کوانتمی نشان می‌دهد که در لحظه شروع، با افزایش تعداد ذرات، مقدار اولیه این کمیت‌ها افزایش می‌یابد. اما در طی زمان رفتار آنها عکس یکدیگر خواهد بود. بطور کلی با کاهش همبستگی کوانتمی، عدم قطعیت در اندازه گیری مشاهده‌پذیرهای ناسازگار افزایش می‌یابد.

کلیدواژه‌ها

عنوان مقاله [English]

Time evolution of quantum correlation and entropic uncertainty relation in the presence of quantum memory under noisy channels and one-axis twisting Hamiltonian

نویسنده [English]

Mohammad Reza Pourkarimi

Department of Physics, Salman Farsi University of Kazerun, Kazerun, Iran

چکیده [English]

Assuming, a symmetric system with N qubits under Hamiltonian one-axis twisting and different kinds of noisy channels, such as amplitude damping, phase-flip and phase-damping channel, it is studied the time evolution of quantum correlation and entropic uncertainty relation in the presence of quantum memory. By comparing the behaviors of the dynamics of entropic uncertainty and quantum correlation, it is shown that they increase with increasing of the number of qubits in the beginning of the time. But, they behave in contrary to each other, during the time. As a result, the uncertainty of incompatible observables increases, when quantum correlation decreases.

کلیدواژه‌ها [English]

Quantum correlation
Entropic uncertainty relation
Quantum discord

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