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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
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
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A new entropic quantum correlation measure for adversarial systems [PDF]
Scientific Reports, 2023 Quantum correlation often refers to correlations exhibited by two or more local subsystems under a suitable measurement. These correlations are beyond the framework of classical statistics and the associated classical probability distribution.
Biveen Shajilal +3 more
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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
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Remote transfer of Gaussian quantum discord
Optics Express, 2014 Quantum discord quantifies quantum correlation between quantum systems, which has potential application in quantum information processing. In this paper, we propose a scheme realizing the remote transfer of Gaussian quantum discord, in which another ...
Ma, Lingyu, Su, Xiaolong
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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
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Global Quantum Discord in Multipartite Systems [PDF]
Physical Review A, 2011 We propose a global measure for quantum correlations in multipartite systems, which is obtained by suitably recasting the quantum discord in terms of relative entropy and local von Neumann measurements.
C. C. Rulli +2 more
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Verification of quantum discord
, 2012 We introduce a measurement-based method for verifying quantum discord of any bipartite quantum system. We show that by performing an informationally complete POVM (IC-POVM) on one subsystem and checking the commutativity of the conditional states of the ...
Caves, Carlton M. +2 more
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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
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Quantum features of gravcats [PDF]
Scientific ReportsWe explore the quantum features of two gravitational cats (gravcats) modeled by two qubits, focusing on quantum steerability, concurrence, and geometric quantum discord under varying conditions of gravitational interaction strength, temperature, and ...
Elhabib Jaloum +2 more
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