Nonlocal Advantages of Quantum Imaginarity

• URL: http://arxiv.org/abs/2411.03627v1
• Date: Wed, 06 Nov 2024 02:49:45 GMT
• Title: Nonlocal Advantages of Quantum Imaginarity
• Authors: Zhi-Wei Wei, Shao-Ming Fei,
• Abstract summary: We establish a connection between the imaginarity and quantum nonlocality in any two-qubit states. We show that any two-qubit state with NAQI is quantum steerable, but not the vice-versa.
• Score: 1.829179623372777
• License:
• Abstract: Quantum imaginarity and quantum nonlocality capture the essence of quantumness of a physical system from different aspects. We establish a connection between the imaginarity and quantum nonlocality in any two-qubit states. Based on the imaginarity $l_1$-norm and relative entropy, we first derive complementary relations among the quantum imaginarities with respect to any set of mutually unbiased bases for arbitrary qubit states. Based on these complementary relations, we introduce the nonlocal advantage of quantum imaginarity (NAQI). We show that any two-qubit state with NAQI is quantum steerable, but not the vice-versa. In addition, we investigate the exclusion property of NAQI in three-qubit pure states.

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