Results 51 to 60 of about 309,127 (319)
, 1982 The linear-polarization correlation of pairs of photons emitted in a radiative cascade of calcium has been measured. The new experimental scheme, using two-channel polarizers (i.e., optical analogs of Stern-Gerlach filters), is a straightforward ...
A. Aspect, P. Grangier, G. Roger
semanticscholar +1 more source
Two-step quantum direct communication protocol using the Einstein-Podolsky-Rosen pair block [PDF]
, 2003 A protocol for quantum secure direct communication using blocks of Einstein-Podolsky-Rosen (EPR) pairs is proposed. A set of ordered N EPR pairs is used as a data block for sending secret message directly.
Fuguo Deng, G. Long, Xiao-Shu Liu
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.A copper‐induced atom ordering strategy is developed for the reconstruction of raw commercial Pt catalyst into ordered PtFeCu intermetallic compounds for hydrogen fuel cells. Abstract Carbon‐supported platinum intermetallic compound nanoparticles are seen as the next‐generation cathodic catalysts for hydrogen fuel cells due to their high activity and ...
Yan Nie +9 more
wiley +1 more source
Einstein-Weyl structures on almost cosymplectic manifolds [PDF]
arXiv, 2018 In this article, we study Einstein-Weyl structures on almost cosymplectic manifolds. First we prove that an almost cosymplectic $(\kappa,\mu)$-manifold is Einstein or cosymplectic if it admits a closed Einstein-Weyl structure or two Einstein-Weyl structures.
arxiv
The Einstein Tensor and Its Generalizations
, 1971 The Einstein tensorGij is symmetric, divergence free, and a concomitant of the metric tensorgab together with its first two derivatives. In this paper all tensors of valency two with these properties are displayed explicitly.
D. Lovelock
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The Physics Teacher, 2008 Reflection of light from a plane mirror in uniform rectilinear motion is a century-old problem, intimately related to the foundations of special relativity.1–4 The problem was first investigated by Einstein in his famous 1905 paper by using the Lorentz transformations to switch from the mirror's rest frame to the frame where the mirror moves at a ...
Aleksandar Gjurchinovski +1 more
openaire +4 more sources
Advanced Functional Materials, EarlyView.This study demonstrates an alternative method of creating charge‐stable negatively charged nitrogen vacancy (NV−) centers close to the diamond surface without high‐temperature annealing. By illuminating nitrogen‐implanted regions with a continuous‐wave 405 nm laser, NV− centers are induced, exhibiting electron spin coherence properties suitable for ...
Jens Fuhrmann +4 more
wiley +1 more source
Einstein solvmanifolds and the pre-Einstein derivation [PDF]
arXiv, 2008 An Einstein nilradical is a nilpotent Lie algebra, which can be the nilradical of a metric Einstein solvable Lie algebra. The classification of Riemannian Einstein solvmanifolds (possibly, of all noncompact homogeneous Einstein spaces) can be reduced to determining, which nilpotent Lie algebras are Einstein nilradicals and to finding, for every ...
arxiv
Einstein Equations from Varying Complexity. [PDF]
Physical Review Letters, 2017 A recent proposal equates the circuit complexity of a quantum gravity state with the gravitational action of a certain patch of spacetime. Since Einstein's equations follow from varying the action, it should be possible to derive them by varying ...
B. Czech
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Enhanced Polariton Interactions in Suspended WS2 Monolayer Microcavity
Advanced Materials, EarlyView.Monolayers of transition‐metal dichalcogenides exhibit strong exciton resonances for light‐matter interactions at RT, though substrate effects limit performance. This work presents a planar microcavity with a suspended WS2 monolayer, eliminating substrate‐induced losses.
Laura Polimeno +9 more
wiley +1 more source