Results 91 to 100 of about 4,829 (196)

Experimental Advances in Phase Estimation with Photonic Quantum States

Entropy
Photonic quantum metrology has emerged as a leading platform for quantum-enhanced precision measurements. By taking advantage of quantum resources such as entanglement, quantum metrology enables parameter estimation with sensitivities surpassing ...
Laura T. Knoll, Agustina G. Magnoni, Miguel A. Larotonda   +2 more
doaj   +1 more source

Cascaded multiparameter quantum metrology

Physical Review A
We present an innovative, platform-independent concept for multiparameter sensing where the measurable parameters are in series, or cascaded, enabling measurements as a function of position. With temporally resolved detection, we show that squeezing can give a quantum enhancement in sensitivity over that of classical states by a factor of $e^{2r ...
Gregory Krueper, Lior Cohen, Juliet T. Gopinath   +2 more
openaire   +2 more sources

Metrology for Quantum Hardware Standardization—Charting a Pathway: A Strategic Review

IEEJ Transactions on Electrical and Electronic Engineering, EarlyView.
Advances in quantum mechanics have long underpinned metrology by enabling practical realizations of units through quantum effects. With the 2019 SI revision, traceability is anchored in defined fundamental constants, reinforcing the quantum‐mechanical basis of modern standards. In parallel, quantum technologies are transitioning from laboratory science
Nobu‐Hisa Kaneko
wiley   +1 more source

Microplastics and the Endocrine–Metabolic Interface: Novel Diagnostic Tools Targeting Thyroid–Adipose Axis

Environmental Toxicology, EarlyView.
ABSTRACT Microplastics (MPs) have been identified as major environmental contaminants that can affect organisms directly and act as carriers of particles and chemical additives, thereby aggravating endocrine networks that coordinate metabolic homeostasis.
Sunday Amos Onikanni, Babasola Aiyeku, Marjorie Dardis Murucci, Temitope Aribigbola, Kenia Bispo, Oluwatosin Stella Olayinka, Rômulo Sperduto Dezonne, Sara Gemini Piperni, Paula Soares, Denise Pires de Carvalho, Leandro Miranda‐Alves   +10 more
wiley   +1 more source

Quantum parameter estimation with imperfect reference frames

New Journal of Physics, 2015
Quantum metrology studies quantum strategies which enable us to outperform their classical counterparts. In this framework, the existence of perfect classical reference frames is usually assumed.
Dominik Šafránek, Mehdi Ahmadi, Ivette Fuentes   +2 more
doaj   +1 more source

Cryogen‐Aided Chromatographic Purification of Millimole Quantities of Methane for Spectroscopic Clumped Isotope Analysis

Rapid Communications in Mass Spectrometry, Volume 40, Issue 18, 30 September 2026.
ABSTRACT Rationale Quantum cascade laser absorption spectroscopy (QCLAS) is a fast and reliable method for analyzing the bulk (𝛿13C‐CH4, 𝛿D‐CH4) and clumped isotopic (∆13CH3D and ∆12CH2D2) composition of methane. However, precise measurements of ∆12CH2D2 require 0.5 to 1.8 mmol of purified methane (equivalent to 15 to 40 mL at STP).
Nico Kueter, Jan G. C. Meissner, Naizhong Zhang, Léna Msonnereau, Lukas Emmenegger, Joachim Mohn, Stefano M. Bernasconi   +6 more
wiley   +1 more source

Advances in Chitosan Nanoparticles: A Comprehensive Review of Properties, Synthesis, Characterization, Multidisciplinary Applications, and Future Perspectives

Journal of Applied Polymer Science, Volume 143, Issue 33, September 5, 2026.
This review highlights the synthesis of chitosan nanoparticles from natural sources, the thorough characterization of them, and use of microscopic and spectroscopic methods. It emphasizes that it has some indispensable properties such as being non‐toxic, antimicrobial, and capable of controlled drug release.
Mariam Sohail Mansoor, Nayab Raza, Furqana Bibi, Madiha Mumtaz, Asif Abbas, Farasat Haider, Basit Ali   +6 more
wiley   +1 more source

Squeezing-induced quantum-enhanced multiphase estimation

Physical Review Research
We investigate how squeezing techniques can improve the measurement precision in multiphase quantum metrology. While these methods are well studied and effectively used in single-phase estimations, their usage in multiphase situations has yet to be ...
Le Bin Ho
doaj   +1 more source

Ultrasound Participated Optomechanical Frequency Comb Generation and Tunability in High‐Q Microbubble Cavities

Nanophotonics, Volume 15, Issue 15, 13 August 2026.
Optomechanical frequency combs are generated in high‐Q microbubble cavities by simultaneous ultrasound and laser excitation, arising from nonlinear coupling between optomechanical modes and ultrasonically driven mechanical oscillations. Comb spacing and intensity are tunable through acoustic and optical parameters, whereas the optical spring effect ...
Yuxing Zhang, Xing Niu, Hailin Chen, Sheng Liu, Lei Xu, Liying Liu   +5 more
wiley   +1 more source

Geometric invariants of quantum metrology

Physical Review A
We establish a previously unexplored conservation law for the Quantum Fisher Information Matrix (QFIM) expressed as follows; when the QFIM is constructed from a set of observables closed under commutation, i.e., a Lie algebra, the spectrum of the QFIM is invariant under unitary dynamics generated by these same operators.
Christopher Wilson, John Drew Wilson, Luke Coffman, Shah Saad Alam, Murray J. Holland   +4 more
openaire   +2 more sources