Quantum metrology articles from across Nature Portfolio

Quantum metrology uses quanta — individual packets of energy — for setting the standards that define units of measurement and for other high-precision research. Quantum mechanics sets the ultimate limit on the accuracy of any measurement. Quantum metrology, therefore, uses quantum effects to enhance precision beyond that possible through classical approaches.

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News & Views | 16 March 2023

Confining quantum spin defects to two dimensions

Nature Physics, 1-2
News & Views | 03 March 2023

Steps towards current metrology
- Gianluca Rastelli
- & Ioan M. Pop
Nature Physics, 1-2

Latest Research and Reviews

Research | 23 March 2023

Magnetic detection under high pressures using designed silicon vacancy centres in silicon carbide

Optically detected magnetic resonance of nitrogen vacancy centres in diamond enables the detection of pressure-induced phase transitions, but interpreting their magnetic resonance spectra remains challenging. Here the authors propose implanted silicon vacancy defects in 4H-SiC for in situ magnetic phase detection at high pressures.
- Jun-Feng Wang
- , Lin Liu
- & Guang-Can Guo
Nature Materials, 1-6
Research
22 March 2023 | Open Access

Quantum-coherence-free precision metrology by means of difference-signal amplification
- Jialin Li
- , Yazhi Niu
- & Xin-Qi Li
Scientific Reports 13, 4688
Research
21 March 2023 | Open Access

Negativity vs. purity and entropy in witnessing entanglement
- James Schneeloch
- , Christopher C. Tison
- & Paul M. Alsing
Scientific Reports 13, 4601
Research
20 March 2023 | Open Access

Ultimate precision limit of noise sensing and dark matter search
- Haowei Shi
- & Quntao Zhuang
npj Quantum Information 9, 27
Research
16 March 2023 | Open Access

Probing many-body dynamics in a two-dimensional dipolar spin ensemble

Solid-state systems are established candidates to study models of many-body physics but have limited control and readout capabilities. Ensembles of defects in diamond may provide a solution for studying dipolar systems.
- E. J. Davis
- , B. Ye
- & N. Y. Yao
Nature Physics, 1-9
Research
15 March 2023 | Open Access

Sub-micron spin-based magnetic field imaging with an organic light emitting diode

Previous demonstrations of electrically and optically detected magnetic resonance in OLED materials have established these systems as promising candidates for magnetic field sensing. Here the authors present an integrated OLED-based device for magnetic field imaging with sub-micron resolution.
- Rugang Geng
- , Adrian Mena
- & Dane R. McCamey
Nature Communications 14, 1441

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News and Comment

News & Views | 16 March 2023

Confining quantum spin defects to two dimensions

Controlling the spatial distribution of optically active spin defects in solids is a long-standing goal in the quantum sensing and simulation communities. Measurements of the many-body noise generated by the spins were used to verify that a highly coherent and strongly interacting quantum spin system was confined to two dimensions within a diamond substrate.

Nature Physics, 1-2
News & Views | 03 March 2023

Steps towards current metrology

Two superconductors connected by a weak link form a Josephson junction, a nonlinear circuit element at the heart of many quantum devices. Quantized electrical current steps that were predicted decades ago have now been observed experimentally.
- Gianluca Rastelli
- & Ioan M. Pop
Nature Physics, 1-2
News & Views | 09 February 2023

Broadband squeezer of microwave light

‘Squeezing’ of light can be used to alter the distribution of quantum noise to benefit quantum sensing and other applications. An improved design for a microwave photon squeezer provides high performance over a large bandwidth.
- Baleegh Abdo
Nature Physics, 1-2
News & Views | 28 November 2022

Phase anomaly brings quantum implications

Experimental confirmation that the Gouy phase can modify the photonic de Broglie wavelength opens up many exciting directions in metrology using quantum systems with higher-order Gaussian modes.
- Xuemei Gu
- & Mario Krenn
Nature Photonics 16, 815-817
News & Views | 17 October 2022

Many atoms make sensors better

Ensembles of weakly interacting atoms have enabled some of the most precise measurements ever made. Now researchers have shown that making these atoms work together in a strongly interacting regime can boost sensitivity by orders of magnitude.
- Shannon Whitlock
Nature Physics 18, 1391-1392
Comments & Opinion | 12 July 2022

The expanding role of National Metrology Institutes in the quantum era

Emerging quantum technologies pose new measurement challenges, but also offer previously unknown measurement solutions. National metrology institutes are playing a leading role in this fast evolving world.
- Alexander Tzalenchuk
- , Nicolas Spethmann
- & Barbara L. Goldstein
Nature Physics 18, 724-727

All News & Comment

Quantum metrology articles from across Nature Portfolio

Featured

Confining quantum spin defects to two dimensions

Steps towards current metrology

Latest Research and Reviews

Magnetic detection under high pressures using designed silicon vacancy centres in silicon carbide

Quantum-coherence-free precision metrology by means of difference-signal amplification

Negativity vs. purity and entropy in witnessing entanglement

Ultimate precision limit of noise sensing and dark matter search

Probing many-body dynamics in a two-dimensional dipolar spin ensemble

Sub-micron spin-based magnetic field imaging with an organic light emitting diode

News and Comment

Confining quantum spin defects to two dimensions

Steps towards current metrology

Broadband squeezer of microwave light

Phase anomaly brings quantum implications

Many atoms make sensors better

The expanding role of National Metrology Institutes in the quantum era

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