Results 101 to 110 of about 1,418,125 (307)

Quantum metrology with cold atomic ensembles

open access: yesEPJ Web of Conferences, 2013
Quantum metrology uses quantum features such as entanglement and squeezing to improve the sensitivity of quantum-limited measurements. Long established as a valuable technique in optical measurements such as gravitational-wave detection, quantum ...
Mitchell Morgan W.   +6 more
doaj   +1 more source

Enhanced parameter estimation by measurement of non-Hermitian operators

open access: yesAAPPS Bulletin, 2023
Quantum metrology aims at delivering new quantum-mechanical improvement to technologies of parameter estimations with precision bounded by the quantum Cramér-Rao bound.
Jianning Li   +3 more
doaj   +1 more source

Experimental investigations of the dipolar interactions between single Rydberg atoms

open access: yes, 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   +1 more source

Quantum metrology with full and fast quantum control [PDF]

open access: yes, 2017
We establish general limits on how precise a parameter, e.g. frequency or the strength of a magnetic field, can be estimated with the aid of full and fast quantum control.
Dür, Wolfgang   +3 more
core   +3 more sources

Submicron Patterning Techniques for Perovskite Optoelectronics From Materials Challenges to Scalable Device Integration

open access: yesAdvanced Optical Materials, EarlyView.
This review highlights submicron patterning strategies for metal halide perovskites, focusing on solvent compatibility, resolution, and alignment toward scalable integration in advanced optoelectronic systems. Abstract Halide perovskites are promising materials for future optoelectronic and display systems.
Dante Ahn   +4 more
wiley   +1 more source

Thickness Dependence of Linear and Nonlinear Optical Properties of Multilayer 3R‐MoS2

open access: yesAdvanced Optical Materials, EarlyView.
Thickness as a key design parameter for optimizing the nonlinear optical response of layered transition metal dichalcogenides (TMDs) materials is established. The demonstrated correlation between thickness, linear spectra, and harmonic generation efficiency provides a powerful framework for tailoring nonlinear performance.
Fatemeh Abtahi   +6 more
wiley   +1 more source

Stability optimization based on high-resolution spatial thermal distribution of a single 174Yb+ ion

open access: yesShenzhen Daxue xuebao. Ligong ban
Trapped ion systems play a vital role in fields such as quantum information processing and optical frequency standards. Low-energy, highly stable trapped ions enable precise quantum manipulation and significantly reduce Doppler effect.
NIU Haipo   +5 more
doaj   +1 more source

Coherence enhanced quantum metrology in a nonequilibrium optical molecule

open access: yesNew Journal of Physics, 2018
We explore the quantum metrology in an optical molecular system coupled to two environments with different temperatures, using a quantum master equation beyond secular approximation.
Zhihai Wang   +3 more
doaj   +1 more source

Probing cosmic string spacetime through parameter estimation

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
Quantum metrology studies the ultimate precision limit of physical quantities by using quantum strategy. In this paper we apply the quantum metrology technologies to the relativistic framework for estimating the deficit angle parameter of cosmic string ...
Ying Yang, Jiliang Jing, Zehua Tian
doaj   +1 more source

Spin squeezing, entanglement and quantum metrology with Bose-Einstein condensates

open access: yes, 2012
Squeezed states, a special kind of entangled states, are known as a useful resource for quantum metrology. In interferometric sensors they allow to overcome the "classical" projection noise limit stemming from the independent nature of the individual ...
Albiez M   +12 more
core   +1 more source

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