Quantum sensing with arbitrary frequency resolution

Boss, J. M.; Cujia, K. S.; Zopes, Jonathan; Degen, Christian L.

doi:10.1126/science.aam7009

Cited by 268 publications

(272 citation statements)

References 47 publications

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“…information as opposed to bulk NMR, where the couplings typically hamper structure analysis. The spectral resolution can be improved by, for example, the Qdyne technique [30,31] and weak measurement readout. [32,33] The sensitivity can be improved by more efficient readout method [34] and speed-up algorithm.…”

Section: Resultsmentioning

confidence: 99%

Structural Analysis of Nuclear Spin Clusters via 2D Nanoscale Nuclear Magnetic Resonance Spectroscopy

Yang

Kong

et al. 2020

Adv Quantum Tech

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2D nuclear magnetic resonance (NMR) is essential in molecular structure determination. The nitrogen vacancy (NV) center in diamond is proposed and developed as an outstanding quantum sensor to realize NMR in nanoscale. In this work, a scheme for 2D nanoscale NMR spectroscopy is developed based on quantum controls on an NV center. A proof‐of‐principle experiment on a target of two coupled 13C nuclear spins in diamond is carried out. A correlation spectroscopy (COSY) like sequence is used to acquire the data on time domain, which is then converted to frequency domain with the fast Fourier transform. With the 2D NMR spectrum, the structure and location of the set of nuclear spin are resolved. This work marks a fundamental step toward resolving the structure of a single molecule.

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Section: Resultsmentioning

confidence: 99%

Structural Analysis of Nuclear Spin Clusters via 2D Nanoscale Nuclear Magnetic Resonance Spectroscopy

Yang

Kong

et al. 2020

Adv Quantum Tech

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“…Many breakthroughs that have been achieved by physicists, still await their realization in a biological environment. Some of the most exciting developments for quantum sensing are new pulsing protocols which promise selectivity for different elements or even the ability to measure chemical shifts . Yet, other efforts lead the way toward the highest possible sensitivity with the ultimate goal of atomic resolution .…”

Section: Discussionmentioning

confidence: 99%

“…Some of the most exciting developments for quantum sensing are new pulsing protocols which promise selectivity for different elements or even the ability to measure chemical shifts. [169] Yet, other efforts lead the way toward the highest possible sensitivity with the ultimate goal of atomic resolution. [170] Although the sensitivity that has been achieved for diamond sensors is already quite impressive in some cases, we are still far from what is theoretically possible.…”

Section: Discussionmentioning

confidence: 99%

Nanodiamonds and Their Applications in Cells

Chipaux

Laan

Hemelaar

et al. 2018

Small

185

195

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Diamonds owe their fame to a unique set of outstanding properties. They combine a high refractive index, hardness, great stability and inertness, and low electrical but high thermal conductivity. Diamond defects have recently attracted a lot of attention. Given this unique list of properties, it is not surprising that diamond nanoparticles are utilized for numerous applications. Due to their hardness, they are routinely used as abrasives. Their small and uniform size qualifies them as attractive carriers for drug delivery. The stable fluorescence of diamond defects allows their use as stable single photon sources or biolabels. The magnetic properties of the defects make them stable spin qubits in quantum information. This property also allows their use as a sensor for temperature, magnetic fields, electric fields, or strain. This Review focuses on applications in cells. Different diamond materials and the special requirements for the respective applications are discussed. Methods to chemically modify the surface of diamonds and the different hurdles one has to overcome when working with cells, such as entering the cells and biocompatibility, are described. Finally, the recent developments and applications in labeling, sensing, drug delivery, theranostics, antibiotics, and tissue engineering are critically discussed.

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“…As an alternative, quantum metrology protocols such as dynamical decoupling [37][38][39], compressive sensing [40,41] or Hamiltonian estimation [42] can provide retrospective insight into magnetic waveforms. The recent demonstrations of quantum lock-in detection measure the frequency of continuously oscillating fields with superb submillihertz precision [43][44][45]. Contemporary approaches have used entanglement to enhance rf field detection [46], and predictive filters to track time-dependent signals [47].…”

Section: Introductionmentioning

confidence: 99%

Wide-bandwidth atomic magnetometry via instantaneous-phase retrieval

Wilson

Perrella

Anderson

et al. 2020

Phys. Rev. Research

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We develop and demonstrate a new protocol that allows sensing of magnetic fields in an extraordinary regime for atomic magnetometry. Until now, the demonstrated bandwidth for atomic magnetometry has been constrained to be slower than the natural precession of atomic spins in a magnetic field-the Larmor frequency. We demonstrate a new approach that tracks the instantaneous phase of atomic spins to measure arbitrarily modulated magnetic fields with frequencies up to fifty times higher than the Larmor frequency. By accessing this regime, we demonstrate magneticfield measurements across four decades in frequency up to 400 kHz, over three orders of magnitude wider than conventional atomic magnetometers. Furthermore, we demonstrate that our protocol can linearly detect transient fields 100-fold higher in amplitude than conventional methods. We highlight the bandwidth and dynamic range of the technique by measuring a magnetic field with a broad and dynamical spectrum. arXiv:2003.04526v1 [physics.atom-ph]

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Quantum sensing with arbitrary frequency resolution

Cited by 268 publications

References 47 publications

Structural Analysis of Nuclear Spin Clusters via 2D Nanoscale Nuclear Magnetic Resonance Spectroscopy

Structural Analysis of Nuclear Spin Clusters via 2D Nanoscale Nuclear Magnetic Resonance Spectroscopy

Nanodiamonds and Their Applications in Cells

Wide-bandwidth atomic magnetometry via instantaneous-phase retrieval

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