Optimal amount of entanglement to distinguish quantum states instantaneously

Abstract

We introduce a new aspect of nonlocality which arises when the task of quantum states distinguishability is considered under local operations and shared entanglement in the absence of classical communication. We find the optimal amount of entanglement required to accomplish the task perfectly for sets of orthogonal states and argue that it quantifies information nonlocality.

arXiv comment14 pages, 1 figure

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Cited by in corpus (7)

• Measurements of nonlocal variables and demonstration of the failure of the product rule for a pre- and postselected pair of photons
• Locally distinguishing quantum states with limited classical communication
• Half a state, half an operator: a general formulation of stators
• Entanglement resource theory of quantum channel
• Incompatibility of local measurements provide advantage in local quantum state discrimination
• Towards a measurement theory in QFT: "Impossible" quantum measurements are possible but not ideal
• Nonlocal Variable-Strength Measurements of N Qubits Using GHZ-like Entanglement