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Asymmetry of Locally Available and Locally Transmitted Information in Thermal Two-Qubit Statesстатья
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 23 сентября 2021 г.
- Автор: Kiktenko E.O.
- Журнал: Journal of Mathematical Sciences
- Том: 252
- Номер: 1
- Год издания: 2020
- Издательство: Plenum Publishers
- Местоположение издательства: United States
- Первая страница: 43
- Последняя страница: 59
- DOI: 10.1007/s10958-020-05140-1
- Аннотация: In the paper, we consider thermal states of two particles with spin 1/2 (qubits) located in an inhomogeneous transverse magnetic field and interacting according to the Heisenberg XY -model. We introduce the concepts of magnitude and direction of asymmetry of the entropy of a state and the magnitude and asymmetry of a flow of locally transmitted information. We show that for the system considered, the asymmetry of entropy is directed from the particle in a weaker magnetic field toward the particle in a stronger magnetic field, and this direction coincides with the direction of the excess flow of locally transmitted information. We also demonstrate that this asymmetry direction is consistent with the direction of the excess flow of locally available information: measurements over the particle in a weaker magnetic field provide a greater level of locally available information than measurements over the particle in a stronger magnetic field.
- Добавил в систему: Киктенко Евгений Олегович