Two Bell states keep constant coherence while the other two show parameter-dependent oscillations with frequencies set by coupling and tunnelling under unitary dynamics.
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A new average correlation for bipartite quantum systems is defined as the difference between global and local skew information; it satisfies non-negativity, contractivity under local channels, and local unitary invariance, with equivalence proven between MUB and Haar-measure definitions plus a wave-
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Analytic $C_{\ell_1}$ norm of Coherence Evolution for Bell States under a Two-Qubit Superconducting Hamiltonian
Two Bell states keep constant coherence while the other two show parameter-dependent oscillations with frequencies set by coupling and tunnelling under unitary dynamics.
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Quantum average correlation based on average coherence
A new average correlation for bipartite quantum systems is defined as the difference between global and local skew information; it satisfies non-negativity, contractivity under local channels, and local unitary invariance, with equivalence proven between MUB and Haar-measure definitions plus a wave-