Quantum Discord, Thermal Discord, and Entropy Generation in the Minimum Error Discrimination Strategy
نویسندگان
چکیده
منابع مشابه
Quantum discord in quantum computation
Quantum discord is a measure of the quantumness of correlations. After reviewing its different versions and properties, we apply it to the questions of quantum information processing. First we show that changes in discord in the processed unentangled states indicate the need for entanglement in the distributed implementation of quantum gates. On the other hand, it was shown that zero system-env...
متن کاملGaussian quantum discord.
We extend the quantum discord to continuous variable systems and evaluate Gaussian quantum discord C(ϱ) for bipartite Gaussian states. In particular, for squeezed-thermal states, we explicitly maximize the extractable information over Gaussian measurements: C(ϱ) is minimized by a generalized measurement rather than a projective one. Almost all squeezed-thermal states have nonzero Gaussian disco...
متن کاملQuantum Discord and Maxwell’s Demons
Quantum discord was proposed as an information theoretic measure of the “quantumness” of correlations. I show that discord determines the difference between the efficiency of quantum and classical Maxwell’s demons in extracting work from collections of correlated quantum systems. Information has an energetic value: It can be converted into work. Maxwell’s demon was introduced into thermodynamic...
متن کاملOperational interpretations of quantum discord
D. Cavalcanti,1 L. Aolita,2 S. Boixo,3 K. Modi,1 M. Piani,4 and A. Winter1,5 1Centre for Quantum Technologies, National University of Singapore, Singapore 117542 2ICFO-Institut de Ciéncies Fotóniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain 3Institute for Quantum Information, California Institute of Technology, Pasadena, California 91125, USA 4Institute for Quantum...
متن کاملStochastic resonance of quantum discord
Chee Kong Lee,1,* Leong Chuan Kwek,1,2 and Jianshu Cao3 1Centre for Quantum Technologies, National University of Singapore, 117543 Singapore 2National Institute of Education and Institute of Advanced Studies, Nanyang Technological University, 637616 Singapore 3Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA (Received 7 August 2011; published 1...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Entropy
سال: 2019
ISSN: 1099-4300
DOI: 10.3390/e21030263