Adversaries perturbing shared entanglement in distributed VQAs can manipulate a new Kraus expressibility metric to keep gradients large but steer training to incorrect solutions.
Bell nonlocality.Reviews of modern physics, 86(2):419–478
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In a qubit-qutrit entangled state, CHSH nonlocality and KCBS contextuality coexist only in a narrow intermediate parameter regime, with contextuality controlled solely by qutrit population p2 and nonlocality by coherence parameters.
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Adversarial Effects on Expressibility and Trainability in Distributed Variational Quantum Algorithms
Adversaries perturbing shared entanglement in distributed VQAs can manipulate a new Kraus expressibility metric to keep gradients large but steer training to incorrect solutions.
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Coexistence of CHSH Nonlocality and KCBS Contextuality in a Single Quantum State
In a qubit-qutrit entangled state, CHSH nonlocality and KCBS contextuality coexist only in a narrow intermediate parameter regime, with contextuality controlled solely by qutrit population p2 and nonlocality by coherence parameters.