Results 31 to 40 of about 440,056 (266)
Results in PhysicsQuantum discord goes beyond entanglement and exists in a wide range of quantum states that may be separable, playing a crucial role in quantum information tasks.
Yiding Wang +2 more
doaj +3 more sources
Quantum Discord Cannot Be Shared
Physical Review Letters, 2013 5 pages, 3 ...
Alexander Streltsov, Wojciech H. Zurek
openalex +6 more sources
Scales of Time Where the Quantum Discord Allows an Efficient Execution of the DQC1 Algorithm [PDF]
Advances in Mathematical Physics, 2014 The power of one qubit deterministic quantum processor (DQC1) (Knill and Laflamme (1998)) generates a nonclassical correlation known as quantum discord.
M. Ávila, G. H. Sun, A. L. Salas-Brito
doaj +2 more sources
Quantum discord-breaking and discord-annihilating channels [PDF]
arXiv, 2019 Quantum discord-breaking channels were previously defined as the local channels that act on subsystem $A$ to produce classical-quantum states across system $AB$. However, unlike entanglement, discord is asymmetric. Here, we characterise the discord-breaking channels that act on subsystem $B$, thus completing the overall description of discord-breaking ...
arxiv +3 more sources
General bounds for quantum discord and discord distance [PDF]
arXiv, 2014 For any bipartite state, how strongly can one subsystem be quantum correlated with another? Using the Koashi-Winter relation, we study the upper bound of purified quantum discord, which is given by the sum of the von Neumann entropy of the unmeasured subsystem and the entanglement of formation shared between the unmeasured subsystem with the ...
Liu, Feng +4 more
arxiv +3 more sources
Quantum correlated heat engine in XY chain with Dzyaloshinskii–Moriya interactions [PDF]
Scientific Reports, 2022 In this paper, we consider a heat engines composed of two interactional qubits with spin-orbit interaction (Dzyaloshinskii–Moriya (DM)) subject to an external magnetic field, so that each qubit is coupled with cold or hot source.
M. Asadian, S. Ahadpour, F. Mirmasoudi
doaj +2 more sources
Monogamy of quantum discord [PDF]
Quantum Science and Technology, 2021 The original quantum discord (QD) is shown to be not monogamous except for the three-qubit states. Recently, a complete monogamy relation for multiparty quantum system was established for entanglement in [Phys. Rev. A. {101}, 032301~(2020)], and in addition, a new multipartite generalization of QD was proposed in [Phys. Rev. Lett. {124}, 110401~(2020)].
Yu Guo, Lizhong Huang, Yang Zhang
openaire +2 more sources
Efficient Characterization of Quantum Evolutions via a Recommender System [PDF]
Quantum, 2021 We demonstrate characterizing quantum evolutions via matrix factorization algorithm, a particular type of the recommender system (RS). A system undergoing a quantum evolution can be characterized in several ways.
Priya Batra +2 more
doaj +1 more source
Quantum discord in quantum computation [PDF]
Journal of Physics: Conference Series, 2011 Prepared for publication in the Proceedings of DICE2010. Section 4 contains previously unpublished results on process tomography.
Daniel R. Terno +3 more
openaire +3 more sources
Monogamy properties of quantum correlations in neutrino oscillations
European Physical Journal C: Particles and Fields, 2023 The monogamy relation of quantum states has limited the shareability properties of quantum resources in multiparty quantum systems. It plays a vital role in information distribution and transformation over many sites in quantum communications.
Guang-Jie Wang +4 more
doaj +1 more source