Abstract
While entanglement between distant parties has been extensively studied, entangled measurements have received relatively little attention despite their significance in understanding nonlocality and their central role in quantum computation and networks. We present a systematic study of entangled measurements, providing a complete classification of all equivalence classes of iso-entangled bases for projective joint measurements on two qubits. The application of this classification to the triangular network reveals that the elegant joint measurement, along with white noise, is the only measurement resulting in output permutation invariant probability distributions when the nodes are connected by Werner states. The paper concludes with a discussion of partial results in higher dimensions. Published by the American Physical Society 2024
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