Solid-State Microwave Magnetometer with Picotesla-Level Sensitivity

Alsid, Scott T.; Schloss, Jennifer; Steinecker, Matthew; Barry, John F.; Maccabe, Andrew C.; Wang, Guoqing; Cappellaro, Paola; Braje, Danielle

doi:10.1103/physrevapplied.19.054095

Cited by 12 publications

(2 citation statements)

References 60 publications

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“…To further improve the SPAD collection efficiency, microlenses can be used to increase the effective pixel fill factor to about 78%, and other collection techniques such as solid immersion lenses (SIL) and light pipes/guides can also be integrated to improve the collection efficiency. [30,[39][40][41][42][43] With a fast frame rate, our setup is suitable for studying dynamical processes such as the charge transport phenomena in diamond. [26,37,44] Although typical wide-field sensing setups based on CCD-type cameras usually have more pixels and can count larger fluorescence signals, they cannot reach single photon sensitivity and their frame rate is usually ranging from Hz to kHz.…”

Section: Discussion and Outlookmentioning

confidence: 99%

“…Experimentally, we monitor the time-dependent population P |0⟩ = (1 + cos(Ω s T))∕2, from which we obtain the Rabi frequency and then the amplitude B s of the target signal (Figure 4a). [30] As a demonstration of the flexibility of the designed setup, we use Rabi magnetometry to map the microwave field amplitude generated by the loop structure on our PCB. We use the broad laser beam to address a large area of the diamond.…”

Section: Microwave Imaging By Rabi Magnetometrymentioning

confidence: 99%

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Fast Wide‐Field Quantum Sensor Based on Solid‐State Spins Integrated with a SPAD Array

Wang

Madonini

et al. 2023

Adv Quantum Tech

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Achieving fast, sensitive, and parallel measurement of a large number of quantum particles is an essential task in building large‐scale quantum platforms for different quantum information processing applications such as sensing, computation, simulation, and communication. Current quantum platforms in experimental atomic and optical physics based on CMOS sensors and charged coupled device cameras are limited by either low sensitivity or slow operational speed. Here an array of single‐photon avalanche diodes is integrated with solid‐state spin defects in diamond to build a fast wide‐field quantum sensor, achieving a frame rate up to 100 kHz. The design of the experimental setup to perform spatially resolved imaging of quantum systems is presented. A few exemplary applications, including sensing DC and AC magnetic fields, temperature, strain, local spin density, and charge dynamics, are experimentally demonstrated using a nitrogen‐vacancy ensemble diamond sample. The developed photon detection array is broadly applicable to other platforms such as atom arrays trapped in optical tweezers, optical lattices, donors in silicon, and rare earth ions in solids.

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Section: Discussion and Outlookmentioning

confidence: 99%

Section: Microwave Imaging By Rabi Magnetometrymentioning

confidence: 99%

Fast Wide‐Field Quantum Sensor Based on Solid‐State Spins Integrated with a SPAD Array

Wang

Madonini

et al. 2023

Adv Quantum Tech

Self Cite

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A Fully‐Integrated Diamond Nitrogen‐Vacancy Magnetometer with Nanotesla Sensitivity

Dai,

Tian,

liu

et al. 2024

Adv Quantum Tech

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Ensemble diamond nitrogen‐vacancy (DNV) centers have emerged as a promising platform for precise earth‐field vector magnetic sensing, particularly in applications that require high mobility. Nevertheless, integrating all control utilities into a compact form has proven challenging, thus far limiting the sensitivity of mobile DNV magnetometers to the ‐level. This study introduces a fully integrated DNV magnetometer that encompasses all the essential components typically found in traditional platforms, while maintaining compact dimensions of approximately 13 cm 26 cm. In contrast to previous efforts, these challenges are successfully addressed by integrating a high‐power laser, a lock‐in amplifier, and a digitally‐modulated microwave source. These home‐made components show comparable performance with commercial devices under the circumstance, resulting in an optimal sensitivity approaching 2.14 nT ()−1. The limitations in this system as well as possible future improvements are discussed. This work paves the way for the use of DNV magnetometry in cost‐effective, mobile unmanned aerial vehicles, facilitating a wide range of practical applications.

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Prospects of single-cell nuclear magnetic resonance spectroscopy with quantum sensors

Neuling

Allert

Bucher

2023

Current Opinion in Biotechnology

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Solid-State Microwave Magnetometer with Picotesla-Level Sensitivity

Cited by 12 publications

References 60 publications

Fast Wide‐Field Quantum Sensor Based on Solid‐State Spins Integrated with a SPAD Array

Fast Wide‐Field Quantum Sensor Based on Solid‐State Spins Integrated with a SPAD Array

A Fully‐Integrated Diamond Nitrogen‐Vacancy Magnetometer with Nanotesla Sensitivity

Prospects of single-cell nuclear magnetic resonance spectroscopy with quantum sensors

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