Quantifying necessary quantum resources for nonlocality

Quantifying necessary quantum resources for nonlocality

Blog Article

Nonlocality is one of the most important resources for quantum information protocols.The observation of nonlocal correlations in a Bell experiment is the result of appropriately chosen measurements and quantum states.We quantify the minimal purity to Hockey Accessories - Waterbottles achieve a certain Bell value for any Bell operator.

Since purity is the most fundamental resource of a quantum state, this enables us also to quantify the necessary coherence, discord, and entanglement for a given violation of two-qubit correlation inequalities.Our results shine a light on the Clauser-Horne-Shimony-Holt inequality by Shirts showing that for a fixed Bell violation an increase in the measurement resources does not always lead to a decrease of the minimal state resources.