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In quantum information theory, quantum discord is a measure of nonclassical correlations between two subsystems of a quantum system. It includes correlations that are due to quantum physical effects but do not necessarily involve quantum entanglement .
where (‖) denotes quantum relative entropy. Note that there is an alternative generalization of mutual information to the quantum case. The difference between the two for a given state is called quantum discord, a measure for the quantum correlations of the state in question.
Wojciech Hubert Zurek [1] (Polish: Żurek; born 1951) is a Polish and American theoretical physicist and a leading authority on quantum theory, especially decoherence and non-equilibrium dynamics of symmetry breaking and resulting defect generation (known as the Kibble–Zurek mechanism).
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In quantum information theory, quantum state merging [1] [2] is the transfer of a quantum state when the receiver already has part of the state. The process optimally transfers partial information using entanglement and classical communication.
Right now, Lalgee said, many companies are struggling to gain loyalty from employees. In the recruitment universe, he said, he hears comments all the time about how many younger people don’t ...
The category quantum information science concerns information science that depends on quantum effects in physics. It includes theoretical issues in computational models as well as more experimental topics in quantum computing.