Results 101 to 110 of about 1,307,918 (342)

Strong coupling and high-contrast all-optical modulation in atomic cladding waveguides

open access: yesNature Communications, 2017
Studying the effects of quantum coherence and shifts in nanoscale atomic cladding waveguides is challenging. Here, Sternet al. construct a highly compact serpentine silicon-nitride atomic vapour cladding waveguide and observe phenomena such as van-der ...
Liron Stern   +3 more
doaj   +1 more source

Coherence of Rabi oscillations with spin exchange

open access: yesPhysical Review Research, 2023
Rabi measurements in atomic vapor cells are of current interest in a range of microwave imaging and sensing experiments, but are increasingly in a parameter space outside of theoretical studies of coherence defined by spin-exchange collisions.
C. Kiehl   +5 more
doaj   +1 more source

Bragg Scattering as a Probe of Atomic Wavefunctions and Quantum Phase Transitions in Optical Lattices

open access: yes, 2011
We have observed Bragg scattering of photons from quantum degenerate $^{87}$Rb atoms in a three-dimensional optical lattice. Bragg scattered light directly probes the microscopic crystal structure and atomic wavefunction whose position and momentum width
David E. Pritchard   +7 more
core   +1 more source

What Do Large Language Models Know About Materials?

open access: yesAdvanced Engineering Materials, EarlyView.
If large language models (LLMs) are to be used inside the material discovery and engineering process, they must be benchmarked for the accurateness of intrinsic material knowledge. The current work introduces 1) a reasoning process through the processing–structure–property–performance chain and 2) a tool for benchmarking knowledge of LLMs concerning ...
Adrian Ehrenhofer   +2 more
wiley   +1 more source

Indistinguishability and Interference in the Coherent Control of Atomic and Molecular Processes

open access: yes, 2010
The subtle and fundamental issue of indistinguishability and interference between independent pathways to the same target state is examined in the context of coherent control of atomic and molecular processes, with emphasis placed on possible "which-way"
Feynman R. P.   +8 more
core   +1 more source

Can Ti‐Based MXenes Serve as Solid Lubricants for Brake Applications? A Tribological Study

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores the first implementation of Ti‐based MXenes materials in brake pad friction composite material. The resulting composite material exhibits a 48% reduction in the wear rate; alongside significant improvements are observed for thermal and mechanical properties.
Eslam Mahmoud   +7 more
wiley   +1 more source

Entanglement for two qubits induced by one-mode thermal field in the presence of the atomic coherence

open access: yesФизика волновых процессов и радиотехнические системы, 2015
In the prresent paper we have considered the influence of the initial atomic coherence on entanglement dynamics of two qubits one of which is trapped in a lossless cavity and interacts with single-mode thermal field, and the other one can be spatially ...
E.K. Bashkirov, M.S. Mastyugin
doaj  

Fundamental Limits to Coherent Photon Generation with Solid-State Atomlike Transitions

open access: yes, 2019
Coherent generation of indistinguishable single photons is crucial for many quantum communication and processing protocols. Solid-state realizations of two-level atomic transitions or three-level spin-$\Lambda$ systems offer significant advantages over ...
Gauger, Erik M.   +7 more
core   +1 more source

Nitride‐Reinforced Metal Matrix Nanocomposite Powders Production by Plasma‐Assisted Thermochemical Treatment of Intermetallic Powders

open access: yesAdvanced Engineering Materials, EarlyView.
This study proposes a new methodology for producing metal matrix nanocomposites in the solid state. The process involves the plasma‐assisted thermochemical treatment of metallic alloy powders. As a proof‐of‐concept, TiN nanoparticles are synthesized directly on the surface of FeTi intermetallic powder particles, enabling the development of the ...
Deivison Daros Paim   +4 more
wiley   +1 more source

Why Is the Range of Timescale So Wide in Glass-Forming Liquid?

open access: yesFrontiers in Chemistry, 2020
The viscosity and the relaxation time of a glass-forming liquid vary over 15 orders of magnitude before the liquid freezes into a glass. The rate of the change with temperature is characterized by liquid fragility.
Takeshi Egami   +3 more
doaj   +1 more source

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