Results 121 to 130 of about 1,354,711 (291)

Quantum Correlations Between Identical and Unidentical Atoms in a Dissipative Environment

, 2011
We have studied the dynamics of quantum correlations such as entanglement, Bell-nonlocality and quantum discord between identical as well as unidentical atoms interacting with a single-mode cavity field and subject to cavity decay.
Altintas, Ferdi, Eryigit, Resul
core   +1 more source

Peculiarities of quantum discord’s geometric measure

Journal of Physics A: Mathematical and Theoretical, 2011
Some properties of the quantum discord based on the geometric measure advanced by Dakic et al (2010 Phys. Rev. Lett. 105 190502 ) are discussed here by recourse to a systematic survey of the two-qubit state-space, with emphasis on Werner and MEM states. We explore the dependence of quantum discord on the degree of mixedness of the bipartite states, and
Batle, J., Plastino, Ángel Luis, Plastino, Ángel Ricardo, Casas, M.   +3 more
openaire   +3 more sources

Amplified Quantum Correlation via Dynamical Modulation in Qubit‐Qutrit System under Markovian and Non‐Markovian Noise

Advanced Physics Research, EarlyView.
This study proposes an innovative approach to strengthen and amplify entanglement in a hybrid qubit–qutrit system driven by a dynamic field. By analyzing the system's dynamics under both Markovian and non‐Markovian environments, we show that specific field values optimize entanglement.
Polislin Fabrice Wonang, Wenceslas Cyprien Minsta Mi Edoux, Odette Melachio Tiokang, Georges Collince Fouokeng, Alain B. Moubissi, Tchoffo Martin   +5 more
wiley   +1 more source

Global quantum correlations in finite-size spin chains

New Journal of Physics, 2013
We perform an extensive study of the properties of global quantum correlations in finite-size one-dimensional quantum spin models at finite temperature. By adopting a recently proposed measure for global quantum correlations (Rulli and Sarandy 2011 Phys.
S Campbell, L Mazzola, G De Chiara, T J G Apollaro, F Plastina, Th Busch, M Paternostro   +6 more
doaj   +1 more source

Digital Technologies Disclosure and the Cost of Capital: The Mediating Role of Sustainability Performance

Business Strategy and the Environment, EarlyView.
ABSTRACT This study examines the economic consequences of Digital Technologies Disclosure (DTD), focusing on its impact on the cost of capital. The increasing significance of digital transformation in shaping corporate strategies and market perceptions motivates the study.
Hussein Mohsen Saber Ahmed, Awad Elsayed Awad Ibrahim, Khaldoon Albitar   +2 more
wiley   +1 more source

Precision Catalysis in Dehydrogenation of Liquid Organic Hydrogen Carriers: Molecular Structure‐Geometry‐Electronic Interplay for Enhanced Hydrogen Evolution

Carbon Energy, EarlyView.
Atomic‐scale design principles for LOHC dehydrogenation: Tailoring geometric and electronic effects in metal catalysts to bridge the molecular structure of LOHC and dehydrogenation performance. ABSTRACT The advancement of hydrogen‐based energy systems necessitates innovative solutions for safe, efficient hydrogen storage and transportation.
Yongxiao Tuo, Jingying Qu, Huailu Sun, Hongwei Gai, Xiangyuan Qu, Junlun Zhu, Xiaohui Sun, De Chen, Xiang Feng   +8 more
wiley   +1 more source

Geometric measure of quantum discord for entanglement of Dirac fields in noninertial frames

Physics Letters B, 2015
We investigate the geometric measure of quantum discord of all possible bipartite divisions of a tripartite system of Dirac fields in noninertial frames. As a comparison, we calculate the geometric measure of entanglement.
Wen-Chao Qiang, Lei Zhang
doaj   +1 more source

Sudden transition between classical and quantum decoherence in dissipative cavity QED and stationary quantum discord

, 2011
We investigate the phenomenon of sudden transition between classical and quantum decoherence in the study of quantum discord for a dissipative cavity QED system, which consists of two noninteracting two-level atoms, each trapped in a dissipative cavity ...
He, Qi-Liang, Xu, Jing-Bo, Yao, Dao-Xin, Zhang, Ye-Qi   +3 more
core   +1 more source

Circulant States with Vanishing Quantum Discord [PDF]

Open Systems & Information Dynamics, 2012
We analyze a class of 2-qudit circulant states. They define a generalization of well-known 2-qubit X-states. We formulate necessary and sufficient criteria for vanishing of quantum discord. We illustrate our analysis by an important subclass of circulant states — the so-called Bell diagonal states.
Bylicka, Bogna, Chruściński, Dariusz
openaire   +4 more sources

Uncertainty Calibration in Molecular Machine Learning: Comparing Evidential and Ensemble Approaches

Chemistry – A European Journal, EarlyView.
ABSTRACT Machine learning (ML) models are increasingly used in quantum chemistry, but their reliability hinges on uncertainty quantification (UQ). In this study, we compare two prominent UQ paradigms—deep evidential regression (DER) and deep ensembles—on the QM9 and WS22 datasets, with a specific emphasis on the role of post hoc calibration.
Bidhan Chandra Garain, Max Pinheiro Jr., Matheus de Oliveira Bispo, Mario Barbatti   +3 more
wiley   +1 more source