Toward a quantum computing algorithm to quantify classical and quantum correlation of system states

التفاصيل البيبلوغرافية
العنوان: Toward a quantum computing algorithm to quantify classical and quantum correlation of system states
المؤلفون: Mahdian, M., Yeganeh, H. Davoodi
المصدر: 2021 Quantum Information Processing
سنة النشر: 2021
المجموعة: Quantum Physics
مصطلحات موضوعية: Quantum Physics
الوصف: Optimal measurement is required to obtain the quantum and classical correlations of a quantum state, and the crucial difficulty is how to acquire the maximal information about one system by measuring the other part; in other words, getting the maximum information corresponds to preparing the best measurement operators. Within a general setup, we designed a variational hybrid quantum-classical (VHQC) algorithm to achieve classical and quantum correlations for system states under the Noisy-Intermediate Scale Quantum (NISQ) technology. To employ, first, we map the density matrix to the vector representation, which displays it in a doubled Hilbert space, and it's converted to a pure state. Then we apply the measurement operators to a part of the subsystem and use variational principle and a classical optimization for the determination of the amount of correlation. We numerically test the performance of our algorithm at finding a correlation of some density matrices, and the output of our algorithm is compatible with the exact calculation.
نوع الوثيقة: Working Paper
DOI: 10.1007/s11128-021-03331-6
URL الوصول: http://arxiv.org/abs/2111.09000
رقم الأكسشن: edsarx.2111.09000
قاعدة البيانات: arXiv
الوصف
DOI:10.1007/s11128-021-03331-6