Results 71 to 80 of about 13,301 (232)

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

open access: yesAdvanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu   +3 more
wiley   +1 more source

Correlations in Two-Qubit Systems under Non-Dissipative Decoherence

open access: yesAxioms, 2020
We built a new set of suitable measures of correlations for bipartite quantum states based upon a recently introduced theoretical framework [Bussandri et al. in Quantum Inf. Proc. 18:57, 2019].
Diego G. Bussandri   +3 more
doaj   +1 more source

Nonzero Classical Discord [PDF]

open access: yes, 2015
Quantum discord is the quantitative difference between two alternative expressions for bipartite mutual information, given respectively in terms of two distinct definitions for the conditional entropy. By constructing a stochastic model of shared states,
de Oliveira, Marcos C.   +2 more
core   +2 more sources

Introducing Quantum Discord

open access: yes, 2001
4 pages, 2 figures, accepted for publication in Phys.
Ollivier, Harold, Zurek, Wojciech H.
openaire   +2 more sources

Flexoelectrically Induced Polar Topology in Twisted SrTiO3 Membranes

open access: yesAdvanced Materials, EarlyView.
Twisted SrTiO3 bilayers host polar vortices of flexoelectric origin, revealed through combined experiment and theory. By reconstructing polarization from the toroidal moment of strain gradients, the work establishes a 3D chiral state with broken inversion and mirror symmetries.
Isabel Tenreiro   +13 more
wiley   +1 more source

Geometric picture of quantum discord for two-qubit quantum states

open access: yes, 2011
Among various definitions of quantum correlations, quantum discord has attracted considerable attention. To find analytical expression of quantum discord is an intractable task.
Chunxiao Sun   +7 more
core   +1 more source

QUANTUM DISCORD AS A RESOURCE IN QUANTUM COMMUNICATION [PDF]

open access: yesInternational Journal of Modern Physics B, 2012
As quantum technologies move from the issues of principle to those of practice, it is important to understand the limitations on attaining tangible quantum advantages. In the realm of quantum communication, quantum discord captures the damaging effects of a decoherent environment.
Madhok, V, Datta, A
openaire   +3 more sources

Why Is the Mechanism Underlying the Chiral‐Induced Selectivity Effect Still Challenging?

open access: yesAdvanced Materials, EarlyView.
The chiral‐induced spin selectivity (CISS) effect is observed in many experimental configurations and for different materials. However, there are theoretical challenges in attempting to explain those results. A qualitative framework for explaining all the results is presented.
Ron Naaman, Yossi Paltiel
wiley   +1 more source

Measuring quantum discord at the LHC

open access: yesJournal of High Energy Physics
There has been an increasing interest in exploring quantities associated with quantum information at colliders. We perform a detailed analysis describing how to measure the quantum discord in the top anti-top quantum state at the Large Hadron Collider ...
Tao Han   +3 more
doaj   +1 more source

Investigating and controlling the quantum resources of bipartite-qubit detectors of scalar fields in the process of spacetime expansion

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
Quantum resources construct new avenues to explore the cosmos. Considering bipartite-qubit detectors subjected to scalar fields in an expanding spacetime, quantum resources (including quantum coherence, quantum discord, Bell-nonlocality, and nonlocal ...
Huan Yang   +4 more
doaj   +1 more source

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