Results 121 to 130 of about 1,418,125 (307)
, 2011 This paper reviews quantum spin squeezing, which characterizes the sensitivity of a state with respect to an SU(2) rotation, and is significant for both entanglement detection and high-precision metrology.
Ma, Jian +3 more
core +2 more sources
A Quest for the Mechanism of Ultrahigh Resolution SEM Imaging
Advanced Science, EarlyView.Using Monte Carlo simulations with explicit definitions of SE1 and SE2 align with a cascade secondary electron production model, this work shows that the 3D nanostructure modulated SE2 emission enhances other than to reduce topographical contrast via a “miniature Faraday cup” effect.
Hao Tian Chen +3 more
wiley +1 more source
Quantum metrology using time-frequency as quantum continuous variables: Resources, sub shot-noise precision and phase space representation [PDF]
, 2022 Éloi Descamps +3 more
openalex +1 more source
Compatibility in multiparameter quantum metrology [PDF]
Physical Review A, 2016 v2: Corrected form of the Holevo Cramer-Rao bound, other minor ...
Ragy, Sammy Hany +2 more
openaire +3 more sources
Experimental Joint Estimation of Phase and Phase Diffusion Via Deterministic Bell Measurements
Advanced Science, EarlyView.This work employs Bell measurement, a form of entangling measurement, to estimate both the phase and its fluctuations in an optical interferometer. By incorporating a novel quantum effect at the measurement stage, the proposed method achieves the ultimate precision limit and demonstrates the significant potential of entangling measurements in multi ...
Ben Wang +4 more
wiley +1 more source
Quantum Computing, Metrology, and Imaging
, 2005 Information science is entering into a new era in which certain subtleties of quantum mechanics enables large enhancements in computational efficiency and communication security.
Dowling, Jonathan P. +2 more
core +2 more sources
Advanced Science, EarlyView.This study uncovers two overlooked bottlenecks in cryogenic laser cooling of solids: symmetry‐driven fluorescence trapping and water vapor condensation. We demonstrate that breaking sample symmetry enhances fluorescence escape, while condensation dominates parasitic heating below 135 K.
Biao Zhong +5 more
wiley +1 more source
Low contact resistance in epitaxial graphene devices for quantum metrology
AIP Advances, 2015 We investigate Ti/Au contacts to monolayer epitaxial graphene on SiC (0001) for applications in quantum resistance metrology. Using three-terminal measurements in the quantum Hall regime we observed variations in contact resistances ranging from a ...
Tom Yager +10 more
doaj +1 more source
Unconditional violation of the shot noise limit in photonic quantum metrology
, 2017 Interferometric phase measurement is widely used to precisely determine quantities such as length, speed, and material properties. Without quantum correlations, the best phase sensitivity $\Delta\varphi$ achievable using $n$ photons is the shot noise ...
Chrzanowski, Helen M. +6 more
core +1 more source
Ultrafast Multilevel Switching and Synaptic Behavior in a Planar Quantum Topological Memristor
Advanced Science, EarlyView.Dry‐transferred Bi2Te3 layers enable a planar quantum topological memristor framework. In‐plane topological surface states facilitate ultrafast & low‐power operations. Coexisting analog and digital modes support current‐controlled multilevel states. PQTM exhibits 105 s retention, 103 cycles endurance, and reproducibility across 24 devices.
Mamoon Ur Rashid +12 more
wiley +1 more source