Results 51 to 60 of about 536,347 (218)

The Preparation and Catalytic Properties of Nanoporous Pt/CeO2 Composites with Nanorod Framework Structures

open access: yesNanomaterials, 2019
Pt/CeO2 catalysts with nanoporous structures were prepared by the facile dealloying of melt-spun Al92−XCe8PtX (X = 0.1; 0.3 and 0.5) ribbons followed by calcination.
Haiyang Wang   +8 more
doaj   +1 more source

Non-adiabatic quantum state preparation and quantum state transport in chains of Rydberg atoms

open access: yesNew Journal of Physics, 2017
Motivated by recent progress in the experimental manipulation of cold atoms in optical lattices, we study three different protocols for non-adiabatic quantum state preparation and state transport in chains of Rydberg atoms.
Maike Ostmann   +4 more
doaj   +1 more source

B-Bridge Regulated Asymmetric Dual-Atomic Catalysts for Synergistically Enhanced Styrene Mineralization and CO2 Reduction

open access: yesNano-Micro Letters
Highlights Bifunctional atomic catalyst for dual environmental-energetic applications. Unprecedented catalytic performance: simultaneously 99% flowing-phase styrene degradation and 98% FECO at 1000 mA cm−2.
Xiai Zhang   +9 more
doaj   +1 more source

Non-Equilibrium Economics [PDF]

open access: yesInterdisciplinary Description of Complex Systems : INDECS, 2007
A microeconomic, agent based framework to dynamic economics is formulated in a materialist approach. An axiomatic foundation of a non-equilibrium microeconomics is outlined. Economic activity is modelled as transformation and transport of commodities (materials) owned by the agents.
openaire   +2 more sources

Effective spin physics in two-dimensional cavity QED arrays

open access: yesNew Journal of Physics, 2017
We investigate a strongly correlated system of light and matter in two-dimensional cavity arrays. We formulate a multimode Tavis–Cummings (TC) Hamiltonian for two-level atoms coupled to cavity modes and driven by an external laser field which reduces to ...
Jiří Minář   +3 more
doaj   +1 more source

Quantum gravity states, entanglement graphs and second-quantized tensor networks

open access: yesJournal of High Energy Physics, 2021
In recent years, the import of quantum information techniques in quantum gravity opened new perspectives in the study of the microscopic structure of spacetime.
Eugenia Colafranceschi, Daniele Oriti
doaj   +1 more source

Higher-order and fractional discrete time crystals in clean long-range interacting systems

open access: yesNature Communications, 2021
Discrete time crystals are typically characterized by a period doubled response with respect to an external drive. Here, the authors predict the emergence of rich dynamical phases with higher-order and fractional periods in clean spin-1/2 chains with ...
Andrea Pizzi   +2 more
doaj   +1 more source

Dynamical creation and detection of entangled many-body states in a chiral atom chain

open access: yesNew Journal of Physics, 2019
Open quantum systems with chiral interactions can be realized by coupling atoms to guided radiation modes in photonic waveguides or optical fibers. In their steady state these systems can feature intricate many-body phases such as entangled dark states ...
Giuseppe Buonaiuto   +3 more
doaj   +1 more source

Bistability and time crystals in long-ranged directed percolation

open access: yesNature Communications, 2021
A model of a classical discrete time crystal satisfying the criteria of persistent subharmonic response robust against thermal noise and defects has been lacking.
Andrea Pizzi   +2 more
doaj   +1 more source

All non-Gaussian states are advantageous for channel discrimination: robustness of non-convex continuous variable quantum resources

open access: yesNew Journal of Physics
Which quantum phenomena are advantageous for information processing tasks? By classifying quantum states and operations as resourceful versus non-resourceful, or free, the mathematical formalism of quantum resource theories helps to address such ...
Leah Turner   +2 more
doaj   +1 more source

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