Coherent control of unitarily equivalent Stinespring dilations of the amplitude-damping channel activates temporal CHSH violations up to γ≈0.83, beyond both the deterministic threshold and independent-environment control.
Quantum Entanglement in Time
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abstract
The temporal Bell inequalities are derived from the assumptions of realism and locality in time. It is shown that quantum mechanics violates these inequalities and thus is in conflict with the two assumptions. This can be used for performing certain tasks that are not possible classically. Our results open up a possibility for introducing the notion of entanglement in time in quantum physics.
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Coherent Control of Channel Dilations Activate Temporal Bell Nonclassicality
Coherent control of unitarily equivalent Stinespring dilations of the amplitude-damping channel activates temporal CHSH violations up to γ≈0.83, beyond both the deterministic threshold and independent-environment control.