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Recent demonstrations of ultracoherent nanomechanical resonators introduce the prospect of new protocols for solid state sensing applications. Here, we propose to use two coupled ultracoherent resonator modes on a Si$_3$N$_4$ membrane for…

应用物理 · 物理学 2020-07-22 J. Košata , O. Zilberberg , Christian L. Degen , R. Chitra , A. Eichler

We propose a scheme to increase the sensitivity and thus the detection volume of nanoscale single molecule magnetic resonance imaging. The proposal aims to surpass the T1 limited detection of the sensor by taking advantage of a long-lived…

量子物理 · 物理学 2015-11-05 Johannes N. Greiner , D. D. Bhaktavatsala Rao , Philipp Neumann , Jörg Wrachtrup

Quantum sensors have attracted broad interest in the quest towards sub-micronscale NMR spectroscopy. Such sensors predominantly operate at low magnetic fields. Instead, however, for high resolution spectroscopy, the high-field regime is…

Spin defects in solids offer promising platforms for quantum sensing and memory due to their long coherence times and optical addressability. Here, we integrate a single nitrogen-vacancy (NV) center in diamond with scanning probe microscopy…

We demonstrate nuclear magnetic resonance (NMR) spectroscopy of picoliter-volume solutions with a nanostructured diamond chip. Using optical interferometric lithography, diamond surfaces were nanostructured with dense, high-aspect-ratio…

介观与纳米尺度物理 · 物理学 2017-11-01 P. Kehayias , A. Jarmola , N. Mosavian , I. Fescenko , F. M. Benito , A. Laraoui , J. Smits , L. Bougas , D. Budker , A. Neumann , S. R. J. Brueck , V. M. Acosta

Quantum sensing with solid-state spin defects has transformed nanoscale metrology, offering sub-wavelength spatial resolution with exceptional sensitivity to multiple signal types. Maximizing these advantages requires minimizing both the…

Mechanical resonators operating in the high-frequency regime have become a versatile platform for fundamental and applied quantum research. Their exceptional properties, such as low mass and high quality factor, make them also very…

介观与纳米尺度物理 · 物理学 2023-11-29 Diego A. Visani , Letizia Catalini , Christian L. Degen , Alexander Eichler , Javier del Pino

Nitrogen vacancy (NV) centers in diamond have emerged as a leading quantum sensor platform, combining exceptional sensitivity with nanoscale spatial resolution by optically detected magnetic resonance (ODMR). Because fluorescence-based ODMR…

量子物理 · 物理学 2020-11-24 Laura Kim , Hyeongrak Choi , Matthew Trusheim , Dirk Englund

We demonstrate theoretically that by placing a ferromagnetic particle between a nitrogen-vacancy (NV) magnetometer and a target spin, the magnetometer sensitivity is increased dramatically. Specifically, using materials and techniques…

介观与纳米尺度物理 · 物理学 2015-11-16 Luka Trifunovic , Fabio L. Pedrocchi , Silas Hoffman , Patrick Maletinsky , Amir Yacoby , Daniel Loss

Single-molecule technology stands as a powerful tool, enabling the characterization of intricate structural and dynamic information that would otherwise remain concealed within the averaged behaviors of numerous molecules. This technology…

量子物理 · 物理学 2025-01-08 Jiangfeng Du , Fazhan Shi , Xi Kong , Fedor Jekezko , Jörg Wrachtrup

Nuclear magnetic resonance (NMR) spectroscopy is a widely used tool for chemical analysis and molecular structure identification. Because it typically relies on the weak magnetic fields produced by a small thermal nuclear spin polarization,…

The nitrogen-vacancy (NV) center has enabled widespread study of nanoscale nuclear magnetic resonance (NMR) spectroscopy at low magnetic fields. NMR spectroscopy at high magnetic fields significantly improves the technique's spectral…

介观与纳米尺度物理 · 物理学 2021-09-15 Benjamin Fortman , Laura Mugica-Sanchez , Noah Tischler , Cooper Selco , Yuxiao Hang , Karoly Holczer , Susumu Takahashi

Quantum sensors leverage matter's quantum properties to enable measurements with unprecedented spatial and spectral resolution. Among these sensors, those utilizing nitrogen-vacancy (NV) centers in diamond offer the distinct advantage of…

We use dynamic nuclear polarization (DNP) enhanced nuclear magnetic resonance (NMR) at liquid helium temperatures to directly detect hydrogen attached to the surface of silicon microparticles. The proton NMR spectrum from a dry sample of…

材料科学 · 物理学 2017-06-08 Mallory L. Guy , Kipp J. van Schooten , Lihuang Zhu , Chandrasekhar Ramanathan

The detection of ensembles of spins under ambient conditions has revolutionized the biological, chemical, and physical sciences through magnetic resonance imaging and nuclear magnetic resonance. Pushing sensing capabilities to the…

介观与纳米尺度物理 · 物理学 2013-04-05 M. S. Grinolds , S. Hong , P. Maletinsky , L. Luan , M. D. Lukin , R. L. Walsworth , A. Yacoby

Magnetic resonance imaging (MRI) has revolutionized biomedical science by providing non-invasive, three-dimensional biological imaging. However, spatial resolution in conventional MRI systems is limited to tens of microns, which is…

介观与纳米尺度物理 · 物理学 2015-06-18 M. S. Grinolds , M. Warner , K. De Greve , Y. Dovzhenko , L. Thiel , R. L. Walsworth , S. Hong , P. Maletinsky , A. Yacoby

Nuclear magnetic resonance (NMR) spectroscopy is, in principle, a promising candidate to study the intracellular chemistry of single microscopic living entities. However, due to sensitivity limitations, NMR experiments were reported only on…

生物物理 · 物理学 2015-11-23 Marco Grisi , Beatrice Volpe , Roberto Guidetti , Nicola Harris , Giovanni Boero

We demonstrate a wide-band all-optical method of nanoscale magnetic resonance (MR) spectroscopy under ambient conditions. Our method relies on cross-relaxation between a probe spin, the electronic spin of a nitrogen-vacancy centre in…

Nuclear spins with hyperfine coupling to single electron spins are highly valuable quantum bits. In this work we probe and characterise the particularly rich nuclear spin environment around single silicon vacancy color-centers (V2) in…

Much new solid state technology for single-photon sources, detectors, photovoltaics and quantum computation relies on the fabrication of strained semiconductor nanostructures. Successful development of these devices depends strongly on…