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We investigate spin and optical properties of individual nitrogen-vacancy centers located within 1-10 nm from the diamond surface. We observe stable defects with a characteristic optically detected magnetic resonance spectrum down to lowest…

Mesoscale and Nanoscale Physics · Physics 2012-08-27 B. K. Ofori-Okai , S. Pezzagna , K. Chang , M. Loretz , R. Schirhagl , Y. Tao , B. A. Moores , K. Groot-Berning , J. Meijer , C. L. Degen

We describe a scanning device where a single spin is used as an ultrasensitive, nanoscale magnetic field sensor. As this "probe spin" we consider a single nitrogen-vacancy defect center in a diamond nanocrystal, attached to the tip of the…

Mesoscale and Nanoscale Physics · Physics 2008-09-23 C. L. Degen

The negatively charged nitrogen-vacancy defect (NV)$^-$ in diamond has attracted much attention in recent years in qubit and biological applications. The negative charge is donated from nearby nitrogen donors that could limit or stem the…

Materials Science · Physics 2009-02-16 Adam Gali

We present a new magnetometry method integrating an ensemble of nitrogen-vacancy (NV) centers in a single-crystal diamond with an extended dynamic range for monitoring the fast changing magnetic-field. The NV-center spin resonance frequency…

We study features in the optically detected magnetic resonance (ODMR) signals associated with negatively charged nitrogen-vacancy (NV) centers coupled to other paramagnetic impurities in diamond. Our results are important for understanding…

Nitrogen-vacancy (NV) centers in diamond can be used as quantum sensors to image the magnetic field with nanoscale resolution. However, nanoscale electric-field mapping has not been achieved so far because of the relatively weak coupling…

Mesoscale and Nanoscale Physics · Physics 2021-05-04 Ke Bian , Wentian Zheng , Xianzhe Zeng , Xiakun Chen , Rainer Stohr , Andrej Denisenko , Sen Yang , Joerg Wrachtrup , Ying Jiang

Nitrogen-vacancy (NV) centers in diamond have become an important tool for quantum technologies. All of these applications rely on long coherence times of electron and nuclear spins associated with these centers. Here, we study the energy…

Quantum Physics · Physics 2020-12-02 K. Rama Koteswara Rao , Dieter Suter

As a potential candidate for quantum computation and metrology, the nitrogen vacancy (NV)center in diamond presented both challenges and opportunities resulted from charge state conversion. By utilizing different lasers for the…

Quantum Physics · Physics 2014-10-20 Xiangdong Chen , Changling Zou , Zhaojun Gong , Chunhua Dong , Guangcan Guo , Fangwen Sun

Nitrogen-vacancy (NV) centers in diamond have attracted considerable interest in sensing of weak magnetic fields, such as those created by biological systems. Detecting such feeble signals requires near-surface NV centers, to reduce the…

Mesoscale and Nanoscale Physics · Physics 2019-05-01 R. Giri , C. Dorigoni , S. Tambalo , F. Gorrini , A. Bifone

Optically detected magnetic resonance of nitrogen vacancy centers in diamond offers novel routes to both DC and AC magnetometry in diamond anvil cells under high pressures ($>3$ GPa). However, a serious challenge to realizing experiments…

Instrumentation and Detectors · Physics 2017-11-29 L. Steele , M. Lawson , M. Onyszczak , B. T. Bush , Z. Mei , A. P. Dioguardi , J. King , A. Parker , A. Pines , S. T. Weir , W. Evans , K. Visbeck , Y. K. Vohra , N. J. Curro

We demonstrate a robust experimental method for determining the depth of individual shallow Nitrogen-Vacancy (NV) centers in diamond with $\sim1$ nm uncertainty. We use a confocal microscope to observe single NV centers and detect the…

We present an experimental and theoretical study of the optically detected magnetic resonance signals for ensembles of negatively charged nitrogen-vacancy (NV) centers in 13C isotopically enriched single-crystal diamond. We observe four…

Quantum Physics · Physics 2016-12-21 A. Jarmola , Z. Bodrog , P. Kehayias , M. Markham , J. Hall , D. J. Twitchen , V. M. Acosta , A. Gali , D. Budker

We present theoretical proposals for two-dimensional nuclear magnetic resonance spectroscopy protocols based on Nitrogen-vacancy (NV) centers in diamond that are strongly coupled to the target nuclei. Continuous microwave and…

Quantum Physics · Physics 2024-10-31 Matthias Kost , Jianming Cai , Martin B. Plenio

The nitrogen vacancy (NV) center in diamond is an increasingly popular quantum sensor for microscopy of electrical current, magnetization, and spins. However, efficient NV-sample integration with a robust, high-quality interface remains an…

Diamonds with nitrogen-vacancy (NV) center ensembles are one of the most promising solid-state quantum platforms for various sensing applications. The combination of a long spin dephasing time ($T_2^*$) and a high NV center concentration is…

Arrays of NV centers in the diamond have the potential in the fields of chip-scale quantum information processing and nanoscale quantum sensing. However, determining their orientations one by one is resource intensive and time consuming.…

Applied Physics · Physics 2019-12-18 Xuerui Song , Fupan Feng , Chunxiao Cai , Guanzhong Wang , Wei Zhu , Wenting Diao , Chongdi Duan

Individual, luminescent point defects in solids so called color centers are atomic-sized quantum systems enabling sensing and imaging with nanoscale spatial resolution. In this overview, we introduce nanoscale sensing based on individual…

Mesoscale and Nanoscale Physics · Physics 2017-05-11 Ettore Bernardi , Richard Nelz , Selda Sonusen , Elke Neu

As the ability to integrate single photon emitters into photonic architectures improves, so does the need to characterize and understand their interaction. Here, we use a scanning diamond nanocrystal to investigate the interplay between the…

Non-invasive imaging of microwave (MW) magnetic fields with microscale lateral resolution is pivotal for various applications, such as MW technologies and integrated circuit failure analysis. Diamond nitrogen-vacancy (NV) center…

We propose a scheme to have zero field magnetic resonance spectroscopy based on a nitrogen-vacancy center and investigate the new applications in which magnetic bias field might disturb the system under investigation. Continual driving with…

Quantum Physics · Physics 2023-04-06 Linkai Zhao , Q. Chen