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Sharma-Mittal Quantum Discord
November 22, 2018 Β· Declared Dead Β· π Quantum Information Processing
"No code URL or promise found in abstract"
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Authors
Souma Mazumdar, Supriyo Dutta, Partha Guha
arXiv ID
1812.00752
Category
quant-ph: Quantum Computing
Cross-listed
cs.IT
Citations
12
Venue
Quantum Information Processing
Last Checked
5 months ago
Abstract
We demonstrate a generalization of quantum discord using a generalized definition of von-Neumann entropy, which is Sharma-Mittal entropy; and the new definition of discord is called Sharma-Mittal quantum discord. Its analytic expressions are worked out for two qubit quantum states as well as Werner, isotropic, and pointer states as special cases. The R{Γ©}nyi, Tsallis, and von-Neumann entropy based quantum discords can be expressed as limiting cases for of Sharma-Mittal quantum discord. We also numerically compare all these discords and entanglement negativity.
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