Majorana decomposition for two-qubit pure states
Majorana decomposition for two-qubit pure states
复制标题
二量子位纯态的马约拉纳分解
DOI:
10.1088/1751-8121/ac07eb
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发表时间:
2021
影响因子:
2.1
通讯作者:
Fu L. B.
中科院分区:
文献类型:
--
作者:
Yang C.;Liu H. D.;Fu L. B.
The Majorana representation (MR), which represents a quantum state and its evolution with the Majorana stars (MSs) on the Bloch sphere, provides us an intuitive way to study symmetric multiqubit pure states physical system with SU(2) symmetry. In this work, we propose a method to extend the MR for generic two-qubit pure states. By adding an additional reference star (RS), which represents the symmetry of the qubits, on the symmetric two qubit state with two base stars, we give a more general MR for both symmetric, anti-symmetric and generic two-qubit states. Using this method, we study the entanglement, Berry phase and their relation by this Majorana decomposition. Furthermore, the symmetries for different type of two-qubit states are also discussed via the RSs and correlation between the two MSs.
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