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Single nitrogen vacancy (NV) centers in diamond have been used extensively for high-sensitivity nanoscale sensing, but conventional approaches use confocal microscopy to measure individual centers sequentially, limiting throughput and…

We propose a strategy to measure weak static magnetic fields with nitrogen-vacancy color center in diamond. Inspired by avian magnetoreception models, we consider the feasibility of utilizing quantum coherence phenomena to measure weak…

Quantum Physics · Physics 2018-04-17 Lu-Si Li , Hong-Hui Li , Li-Li Zhou , Zhi-Sheng Yang , Qing Ai

Nuclear spin hyperpolarization provides a promising route to overcome the challenges imposed by the limited sensitivity of nuclear magnetic resonance. Here we demonstrate that dissolution of spin-polarized pentacene-doped naphthalene…

The nitrogen-vacancy (NV) center in diamond is a solid-state spin defect that has been widely adopted for quantum sensing and quantum information processing applications. Typically, experiments are performed either with a single isolated NV…

Quantum Physics · Physics 2025-03-19 Matthew Cambria , Saroj Chand , Caitlin Reiter , Shimon Kolkowitz

Quantum magnetometers based on spin defects in solids enable sensitive imaging of various magnetic phenomena, such as ferro- and antiferromagnetism, superconductivity, and current-induced fields. Existing protocols primarily focus on static…

The isolated electronic spin system of the Nitrogen-Vacancy (NV) centre in diamond offers unique possibilities to be employed as a nanoscale sensor for detection and imaging of weak magnetic fields. Magnetic imaging with nanometric…

Mesoscale and Nanoscale Physics · Physics 2014-08-19 L. Rondin , J. -P. Tetienne , T. Hingant , J. -F. Roch , P. Maletinsky , V. Jacques

In recent years, the field of quantum sensing has garnered increasing attention due to its potential to revolutionize various scientific and technological domains. Among the different quantum sensors, the nitrogen-vacancy (NV) color center…

Quantum Physics · Physics 2024-10-01 C. Munuera-Javaloy

Nitrogen-vacancy (NV) centers in diamond offer a sensitive method of measuring the spatially localized dynamics of magnetization and associated spin textures in ferromagnetic materials. We use NV centers in a deterministically positioned…

Mesoscale and Nanoscale Physics · Physics 2024-03-29 Jeffrey Rable , Jyotirmay Dwivedi , Nitin Samarth

Precision sensing and imaging of weak static magnetic fields are crucial for a variety of emerging nanoscale applications. While nitrogen-vacancy (NV) centers in diamond provide exceptional AC magnetic field sensitivity with nanoscale…

Nuclear magnetic resonance (NMR) technique benefits from high magnetic field not only due to the field-enhanced measurement sensitivity and resolution, but also because it is a powerful tool to investigate field-induced physics in modern…

Instrumentation and Detectors · Physics 2023-05-05 Wenqi Wei , Qinying Liu , Le Yuan , Jian Zhang , Shiyu Liu , Rui Zhou , Yongkang Luo , Xiaotao Han

By using an ensemble of nitrogen-vacancy (NV) centers, the vector components of a time-varying (AC) magnetic field are measured in a phase sensitive manner. This allows for the determination of the magnetic field's polarization. This…

Quantum Physics · Physics 2025-07-01 M. S. J. Barson , T. J. Christie , J. P. Duff , K. Helmerson

Hyper-polarization of nuclear spins is crucial for advancing nuclear magnetic resonance (NMR) and quantum information technologies, as nuclear spins typically exhibit extremely low polarization at room temperature due to their small…

Quantum Physics · Physics 2025-05-20 Haiyang Li , Hao Liao , Ping Wang

Soon after the first measurements of nuclear magnetic resonance (NMR) in a condensed matter system, Bloch predicted the presence of statistical fluctuations proportional to $1/\sqrt{N}$ in the polarization of an ensemble of $N$ spins. First…

Mesoscale and Nanoscale Physics · Physics 2013-10-07 P. Peddibhotla , F. Xue , H. I. T. Hauge , S. Assali , E. P. A. M. Bakkers , M. Poggio

Nitrogen-vacancy (NV) centers in diamond have shown promise as inherently localized electric-field sensors, capable of detecting individual charges with nanometer resolution. Working with NV ensembles, we demonstrate that a detailed…

Quantum Physics · Physics 2021-09-28 M. Block , B. Kobrin , A. Jarmola , S. Hsieh , C. Zu , N. L. Figueroa , V. M. Acosta , J. Minguzzi , J. R. Maze , D. Budker , N. Y. Yao

The nitrogen vacancy (NV) color center in diamond is an enormously important platform for the development of quantum sensors, including for single spin and single molecule NMR. Detection of weak single-spin signals is greatly enhanced by…

Quantum Physics · Physics 2017-05-29 J. E. Lang , J. Casanova , Z. -Y. Wang , M. B. Plenio , T. S. Monteiro

We present high-resolution optically detected magnetic resonance (ODMR) spectroscopy on single nitrogen-vacancy (NV) center spins in diamond at and around zero magnetic field. The experimentally observed transitions depend sensitively on…

Mesoscale and Nanoscale Physics · Physics 2019-11-22 Johannes Kölbl , Mark Kasperczyk , Beat Bürgler , Arne Barfuss , Patrick Maletinsky

Electron Spin Resonance (ESR) is a widely common method in the field of quantum sensing. Specifically with the Nitrogen-Vacancy (NV) center in diamond, used for sensing magnetic and electric fields, strain and temperature. However, ESR…

Quantum Physics · Physics 2025-02-11 Galya Haim , Chris Mullarkey , John Howell , Nir Bar-Gill

Nuclear magnetic resonance imaging (MRI) at the atomic scale offers exciting prospects for determining the structure and function of individual molecules and proteins. Quantum defects in diamond have recently emerged as a promising platform…

Quantum Physics · Physics 2022-04-06 K. S. Cujia , K. Herb , J. Zopes , J. M. Abendroth , C. L. Degen

Diffusion noise represents a major constraint to successful liquid state nano-NMR spectroscopy. Using the Fisher information as a faithful measure, we theoretically calculate and experimentally show that phase sensitive protocols are…

We describe a real-time data processing and frequency control method to track peaks in optically detected magnetic resonance of nitrogen-vacancy centers in diamond. This procedure allows us to measure magnetic field continuously with…

Mesoscale and Nanoscale Physics · Physics 2019-02-19 Kapildeb Ambal , Robert D. McMichael