Results 61 to 70 of about 613,352 (286)
Molecules, 2023 In this study, a series of trivalent europium-doped tungstate and molybdate samples were synthesized using an improved sol-gel and high-temperature solid-state reaction method.
Fan Chen +2 more
doaj +1 more source
Efficient quantum tomography [PDF]
Proceedings of the forty-eighth annual ACM symposium on Theory of Computing, 2016 In the quantum state tomography problem, one wishes to estimate an unknown $d$-dimensional mixed quantum state $ $, given few copies. We show that $O(d/ )$ copies suffice to obtain an estimate $\hat $ that satisfies $\|\hat - \|_F^2 \leq $ (with high probability). An immediate consequence is that $O(\mathrm{rank}( ) \cdot d/ ^2) \leq O(d^2/
O'Donnell, Ryan, Wright, John
openaire +2 more sources
Fostering Innovation: Streamlining Magnetocaloric Materials Research by Digitalization
Advanced Engineering Materials, EarlyView.Magnetocaloric cooling (MCE) is an environmentally friendly refrigeration method with great potential. Optimizing MCE materials involves the preparation and screening of large quantities of samples, which in turn generates a large amount of data. A digitalization approach is presented that uses ontologies, knowledge graphs, and digital workflows to ...
Simon Bekemeier +17 more
wiley +1 more source
Efficient and long-lived quantum memory with cold atoms inside a ring cavity
, 2012 Quantum memories are regarded as one of the fundamental building blocks of linear-optical quantum computation and long-distance quantum communication. A long standing goal to realize scalable quantum information processing is to build a long-lived and ...
A Kuzmich +41 more
core +1 more source
Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)
Advanced Engineering Materials, EarlyView.Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho +8 more
wiley +1 more source
Efficiency of harmonic quantum Otto engines at maximal power
, 2018 Recent experimental breakthroughs produced the first nano heat engines that have the potential to harness quantum resources. An instrumental question is how their performance measures up against the efficiency of classical engines. For single ion engines
Deffner, Sebastian
core +1 more source
An Experimental High‐Throughput Approach for the Screening of Hard Magnet Materials
Advanced Engineering Materials, EarlyView.An entire workflow for the high‐throughput characterization and analysis of compositionally graded magnetic films is presented. Characterization protocols, data management tools and data analysis approaches are illustrated with test case Sm(Fe, V)12 based films.
William Rigaut +16 more
wiley +1 more source
Quantum efficiency improvement of optical radiation trap-detectors
Semiconductor Physics, Quantum Electronics & Optoelectronics, 2019 The ways to increase the quantum efficiency of trap detectors of optical radiation have been discussed. Presented here has been a brief review of trap detectors, in which high quantum efficiency is ensured by their design.
D.N. Tatyanko
doaj +1 more source
High-efficiency quantum state transfer and quantum memory using a mechanical oscillator
, 2015 We analyze an optomechanical system that can be used to efficiently transfer a quantum state between an optical cavity and a distant mechanical oscillator coupled to a second optical cavity.
Eleuch, H., Sete, Eyob A.
core +1 more source
Advanced Functional Materials, EarlyView.In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund +6 more
wiley +1 more source