Cost of Quantum Entanglement (IMAGE) Louisiana State University Caption Louisiana State University physicist Mark Wilde and Xin Wang of Baidu Research's mathematical formula, called κ entanglement or max-logarithmic negativity (upper left) makes it possible to effeciently calculate the cost of entanglement, which in itself is an entanglement measure, in the creation of a two-party quantum state. Credit Mark Wilde, LSU Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.