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- Title
A Pedagogical Overview of Quantum Discord.
- Authors
Modi, Kavan
- Abstract
Recent measures of nonclassical correlations are motivated by different notions of classicality and operational means. Quantum discord has received a great deal of attention in studies involving quantum computation, metrology, dynamics, many-body physics, and thermodynamics. In this article I show how quantum discord is different from quantum entanglement from a pedagogical point of view. I begin with a pedagogical introduction to quantum entanglement and quantum discord, followed by a historical review of quantum discord. Next, I give a novel definition of quantum discord in terms of any classically extractable information, an approach that is fitting for the current avenues of research. Lastly, I put forth several arguments for why discord is an interesting quantity to study and why it is of interest to so many researchers in the community.
- Subjects
QUANTUM mechanics; NONCLASSICAL mathematical logic; QUANTUM computing; QUANTUM theory; PHYSICS
- Publication
Open Systems & Information Dynamics (OSID), 2014, Vol 21, Issue 1/2, p1
- ISSN
1230-1612
- Publication type
Article
- DOI
10.1142/S123016121440006X