دورية أكاديمية

Pairwise correlations via quantum discord and its geometric measure in a four-qubit spin chain

التفاصيل البيبلوغرافية
العنوان: Pairwise correlations via quantum discord and its geometric measure in a four-qubit spin chain
المؤلفون: Abdel-Baset A. Mohamed
المصدر: Journal of the Egyptian Mathematical Society, Vol 21, Iss 1, Pp 68-74 (2013)
بيانات النشر: SpringerOpen, 2013.
سنة النشر: 2013
المجموعة: LCC:Mathematics
مصطلحات موضوعية: Pairwise correlations, Quantum discord, Spin chain model, Mathematics, QA1-939
الوصف: The dynamic of pairwise correlations, including quantum entanglement (QE) and discord (QD) with geometric measure of quantum discord (GMQD), are shown in the four-qubit Heisenberg XX spin chain. The results show that the effect of the entanglement degree of the initial state on the pairwise correlations is stronger for alternate qubits than it is for nearest-neighbor qubits. This parameter results in sudden death for QE, but it cannot do so for QD and GMQD. With different values for this entanglement parameter of the initial state, QD and GMQD differ and are sensitive for any change in this parameter. It is found that GMQD is more robust than both QD and QE to describe correlations with nonzero values, which offers a valuable resource for quantum computation.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1110-256X
Relation: http://www.sciencedirect.com/science/article/pii/S1110256X12000533; https://doaj.org/toc/1110-256X
DOI: 10.1016/j.joems.2012.10.005
URL الوصول: https://doaj.org/article/0f97e95e5076407ebd3b907846b07153
رقم الأكسشن: edsdoj.0f97e95e5076407ebd3b907846b07153
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:1110256X
DOI:10.1016/j.joems.2012.10.005