Results 61 to 70 of about 41,273 (213)
Quantum Metrology in the Finite-Sample Regime
PRX QuantumIn quantum metrology, a major application of quantum technologies, the ultimate precision of estimating an unknown parameter is often stated in terms of the Cramér-Rao bound.
Johannes Jakob Meyer +4 more
doaj +1 more source
A Colloidal Quantum Dot Thermistor and Bolometer
Advanced Materials, EarlyView.This work introduces colloidal quantum dot thermistors employing a potential barrier structure to tune the activation energy of transport and hence the temperature coefficient of resistance (TCR). Upon integration with plasmonic absorbers, the CQD‐based bolometer device enables room‐temperature wavelength‐selective photodetection across the mid‐ to ...
Gaurav Kumar +7 more
wiley +1 more source
, 2017 Quantum Metrology calculates the ultimate precision of all estimation strategies, measuring what is their root mean-square error (RMSE) and their Fisher information. Here, instead, we ask how many bits of the parameter we can recover, namely we derive an
Hassani, Majid +2 more
core +1 more source
Advanced Materials, EarlyView.A wafer‐scale 2D high‐entropy (MoWTaNbRu)S2 thin‐film catalyst with a distorted 1T phase integrated onto p‐Si photocathode is designed for highly efficient and durable photoelectrochemical hydrogen evolution reaction. The high‐entropy effect in layered transition metal dichalcogenides optimizes hydrogen adsorption energetics, accelerates photogenerated
Sang Eon Jun +14 more
wiley +1 more source
Error-mitigated quantum metrology via enhanced virtual purification
Communications PhysicsQuantum metrology stands as a leading application of quantum science and technology, yet noise often constrains its precision and sensitivity. In near-term quantum metrology, existing protocols largely depend on virtual state purification, but ...
Xiaodie Lin, Haidong Yuan
doaj +1 more source
Multiparameter quantum critical metrology
SciPost Physics, 2022 Single parameter estimation is known to benefit from extreme sensitivity to parameter changes in quantum critical systems. However, the simultaneous estimation of multiple parameters is generally limited due to the incompatibility arising from the ...
Giovanni Di Fresco, Bernardo Spagnolo, Davide Valenti, Angelo Carollo
doaj +1 more source
Experimental investigations of the dipolar interactions between single Rydberg atoms
, 2016 This review summarizes experimental works performed over the last decade by several groups on the manipulation of a few individual interacting Rydberg atoms. These studies establish arrays of single Rydberg atoms as a promising platform for quantum state
Barredo, Daniel +2 more
core +3 more sources
Magnetic Textiles: A Review of Materials, Fabrication, Properties, and Applications
Advanced Materials Technologies, EarlyView.Magnetic textiles (M‐textiles) are emerging as a programmable materials platform that merges magnetic matter with hierarchical textile structures. This article consolidates magnetic material classes, textile architectures, and fabrication and magnetization strategies, revealing structure–property–function relationships that govern magneto‐mechanical ...
Li Ke +3 more
wiley +1 more source
Control-enhanced non-Markovian quantum metrology
Communications PhysicsQuantum metrology promises unprecedented precision of parameter estimation, but it is often vulnerable to noise. While significant efforts have been devoted to improving the metrology performance in Markovian environments, practical control schemes ...
Xiaodong Yang +8 more
doaj +1 more source
Lossy Quantum Optical Metrology with Squeezed States
, 2013 We study the precise phase estimation using squeezed states with photon losses present. Our exact quantum Fisher information calculation shows significant quantum enhancement and thus reveals the benchmark for practical quantum metrology in this noisy ...
Wang, Xiang-Bin +2 more
core +1 more source