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M-neighbor approximation in one-qubit state transfer along zigzag and alternating spin-1/2 chainsстатья
- Авторы: Fel’dman E.B., Zenchuk A.I.
- Журнал: Physica Scripta
- Том: 97
- Номер: 9
- Год издания: 2022
- Издательство: Royal Swedish Academy of Sciences
- Местоположение издательства: Sweden
- Номер статьи: 095101
- DOI: 10.1088/1402-4896/ac8456
- Аннотация: We consider the M -neighbor approximation in the problem of one-qubit pure state transfer along the N -node zigzag and alternating spin chains governed by the XXZ-Hamiltonian with the dipole- dipole interaction. We show that always M > 1, i.e., the nearest neighbor approximation is not applicable to such interaction. Moreover, only all-node interaction (M = N − 1) properly describes the dynamics in the alternating chain. We reveal the region in the parameter space characterizing the chain geometry and orientation which provide the high-probability state-transfer. The optimal state-transfer probability and appropriate time instant for the zigzag and alternating chains are compared.
- Добавил в систему: Зенчук Александр Иванович