Results 11 to 20 of about 1,032,322 (286)
Quantum feedback-enhanced discord in T-shaped plasmonic waveguides with embedded cavity [PDF]
Scientific ReportsThis theoretical study presents a hybrid quantum system that combines the geometry of a T-shaped plasmonic waveguide with an embedded common cavity and applies quantum feedback control to enhance and preserve quantum discord between two quantum dots (QDs)
Hossein Sadeghi +2 more
doaj +2 more sources
Homodyne Estimation of Gaussian Quantum Discord [PDF]
Physical Review Letters, 2012 We address the experimental estimation of Gaussian quantum discord for two-mode squeezed thermal state, and demonstrate a measurement scheme based on a pair of homodyne detectors assisted by Bayesian analysis which provides nearly optimal estimation for small value of discord.
R. Blandino +6 more
openaire +9 more sources
How discord underlies the noise resilience of quantum illumination [PDF]
New Journal of Physics, 2016 The benefits of entanglement can outlast entanglement itself. In quantum illumination, entanglement is employed to better detect reflecting objects in environments so noisy that all entanglement is destroyed.
Christian Weedbrook +4 more
doaj +2 more sources
The power of one clean qubit in supervised machine learning [PDF]
Scientific Reports, 2023 This paper explores the potential benefits of quantum coherence and quantum discord in the non-universal quantum computing model called deterministic quantum computing with one qubit (DQC1) in supervised machine learning.
Mahsa Karimi +3 more
doaj +2 more sources
Quantumness of hybrid systems under quantum noise [PDF]
Scientific ReportsWe investigate the quantum correlations in an axially symmetric hybrid qubit–qutrit system subjected to different noisy environments. We first introduce a physical model and analyze its Hamiltonian structure, emphasizing the role of hybrid dimensionality
M. Abdellaoui +4 more
doaj +2 more sources
Journal of Physics A: Mathematical and Theoretical, 2019 15 pages, 3 figures; published ...
Zi-Wen Liu, Ryuji Takagi, Seth Lloyd
openaire +6 more sources
Mutual Information and Quantum Discord in Quantum State Discrimination with a Fixed Rate of Inconclusive Outcomes. [PDF]
Entropy (Basel), 2021 We studied the mutual information and quantum discord that Alice and Bob share when Bob implements a discrimination with a fixed rate of inconclusive outcomes (FRIO) onto two pure non-orthogonal quantum states, generated with arbitrary a priori ...
Jiménez O +3 more
europepmc +2 more sources
Quantum correlation of microwave two-mode squeezed state generated by nonlinearity of InP HEMT [PDF]
Scientific Reports, 2023 This study significantly concentrates on cryogenic InP HEMT high-frequency circuit analysis using quantum theory to find how the transistor nonlinearity can affect the quantum correlation of the modes generated.
A. Salmanogli
doaj +2 more sources
The freezing Rènyi quantum discord. [PDF]
Sci Rep, 2019 AbstractAs a universal quantum character of quantum correlation, the freezing phenomenon is researched by geometry and quantum discord methods, respectively. In this paper, the properties of Rènyi discord is studied for two independent Dimer System coupled to two correlated Fermi-spin environments under the non-Markovian condition.
Li XY +5 more
europepmc +5 more sources
Quantum discord as a resource for quantum cryptography. [PDF]
Sci Rep, 2014 Quantum discord is the minimal bipartite resource which is needed for a secure quantum key distribution, being a cryptographic primitive equivalent to non-orthogonality. Its role becomes crucial in device-dependent quantum cryptography, where the presence of preparation and detection noise (inaccessible to all parties) may be so strong to prevent the ...
Pirandola S.
europepmc +5 more sources