Laser-written micro-channel atomic magnetometer

• URL: http://arxiv.org/abs/2404.14345v1
• Date: Mon, 22 Apr 2024 16:59:48 GMT
• Title: Laser-written micro-channel atomic magnetometer
• Authors: Andrea Zanoni, Kostas Mouloudakis, Michael C. D. Tayler, Giacomo Corrielli, Roberto Osellame, Morgan W. Mitchell, Vito Giovanni Lucivero,
• Abstract summary: We demonstrate a sensitive optically-pumped magnetometer using rubidium vapor and 0.75 amg of nitrogen buffer gas. The device can be integrated with photonic structures and microfluidic channels with 3D versatility.
• Score: 0.6282171844772422
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We demonstrate a sensitive optically-pumped magnetometer using rubidium vapor and 0.75 amg of nitrogen buffer gas in a sub-mm-width sensing channel excavated by femtosecond laser writing followed by chemical etching. The channel is buried less than 1 mm below the surface of its fused silica host material, which also includes reservoir chambers and micro-strainer connections, to preserve a clean optical environment. Using a zero-field-resonance magnetometry strategy and a sensing volume of 2.25 mm$^3$, we demonstrate a sensitivity of $\approx$ 1 $\mathrm{pT}/\sqrt{\mathrm{Hz}}$ at $10$ Hz. The device can be integrated with photonic structures and microfluidic channels with 3D versatility. Its sensitivity, bandwidth and stand-off distance will enable detection of localized fields from magnetic nanoparticles and \mul NMR samples.

Related papers

• A miniaturized magnetic field sensor based on nitrogen-vacancy centers [0.0]
  The nitrogen-vacancy center in diamond is a prime candidate for quantum sensing technologies. We present a fully integrated mechanically robust fiber-based endoscopic sensor capable of $5.9,mathrmnT/ sqrtmathrmHz$ magnetic field sensitivity. We demonstrate the capability of vector magnetic field measurements in a magnetic field as used in state-of-the-art ultracold quantum gas experiments.
  arXiv  Detail & Related papers  (2024-02-29T17:20:13Z)
• Diamond quantum magnetometer with dc sensitivity of < 10 pT Hz$^{-1/2}$ toward measurement of biomagnetic field [0.0]
  We present a sensitive diamond quantum sensor with a magnetic field sensitivity of $9.4 pm 0.1mathrmpT/sqrtHz$ in a near-dc frequency range of 5 to 100Hz. This sensor is based on the continuous-wave optically detected magnetic resonance of an ensemble of nitrogen-vacancy centers along the [111] direction in a diamond (111) single crystal.
  arXiv  Detail & Related papers  (2023-09-08T03:12:32Z)
• Mid-infrared spectroscopy with a broadly tunable thin-film lithium niobate optical parametric oscillator [45.82374977939355]
  Device generates 25 mW of mid-infrared light at 3.2 microns, offering a power conversion efficiency of 15%. We demonstrate the tuning and performance of the device by successfully measuring the spectra of methane and ammonia.
  arXiv  Detail & Related papers  (2023-07-09T15:08:35Z)
• Fiber-coupled Diamond Magnetometry with an Unshielded 30 pT/$\sqrt{\textrm{Hz}}$ Sensitivity [0.0]
  We present a fiber-coupled NVC magnetometer with an unshielded sensitivity of (30 $pm$ 10) pT/$sqrttextrmHz$ in a (10 - 500)-Hz frequency range. This sensitivity is enabled by a relatively high green-to-red photon conversion efficiency, the use of a [100] bias field alignment, microwave and lock-in amplifier (LIA) parameter optimisation, as well as a balanced hyperfine excitation scheme. The magnetometer is capable of detecting signals from sources such as a vacuum pump up to 2 m away, with
  arXiv  Detail & Related papers  (2022-11-16T19:35:51Z)
• Nanodiamonds based optical-fiber quantum probe for magnetic field and biological sensing [6.643766442180283]
  In this work, a miniature optical-fiber quantum probe, configured by chemically-modifying nanodiamonds NV centers, is developed. The magnetic field detection sensitivity of the probe is significantly enhanced to 0.57 nT/Hz1/2 @ 1Hz, a new record among the fiber magnetometers based on nanodiamonds NV.
  arXiv  Detail & Related papers  (2022-02-24T01:41:13Z)
• Rydberg atom-based field sensing enhancement using a split-ring resonator [50.591267188664666]
  We investigate the use of a split-ring resonator incorporated with an atomic-vapor cell to improve sensitivity and the minimal detectable electric field of Rydberg atom-based sensors. By combining EIT with a heterodyne Rydberg atom-based mixer approach, the SRR allows for the a sensitivity of 5.5$mu$V/m$sqrtrm Hz$, which is two-orders of magnitude improvement in sensitivity than when the SRR is not used.
  arXiv  Detail & Related papers  (2022-02-18T01:44:56Z)
• Continuous-Wave Frequency Upconversion with a Molecular Optomechanical Nanocavity [46.43254474406406]
  We use molecular cavity optomechanics to demonstrate upconversion of sub-microwatt continuous-wave signals at $sim$32THz into the visible domain at ambient conditions. The device consists in a plasmonic nanocavity hosting a small number of molecules. The incoming field resonantly drives a collective molecular vibration, which imprints an optomechanical modulation on a visible pump laser.
  arXiv  Detail & Related papers  (2021-07-07T06:23:14Z)
• A high-sensitivity fiber-coupled diamond magnetometer with surface coating [19.468384174783917]
  Nitrogen-vacancy quantum defects in diamond offer a promising platform for magnetometry. We present a high-sensitivity and wide-bandwidth fiber-based quantum magnetometer for practical applications.
  arXiv  Detail & Related papers  (2021-02-24T11:53:03Z)
• Laser threshold magnetometry using green light absorption by diamond nitrogen vacancies in an external cavity laser [52.77024349608834]
  Nitrogen vacancy (NV) centers in diamond have attracted considerable recent interest for use in quantum sensing. We show theoretical sensitivity to magnetic field on the pT/sqrt(Hz) level is possible using a diamond with an optimal density of NV centers.
  arXiv  Detail & Related papers  (2021-01-22T18:58:05Z)
• An integrated magnetometry platform with stackable waveguide-assisted detection channels for sensing arrays [45.82374977939355]
  We present a novel architecture which allows us to create NV$-$-centers a few nanometers below the diamond surface. We experimentally verify the coupling efficiency, showcase the detection of magnetic resonance signals through the waveguides and perform first proof-of-principle experiments in magnetic field and temperature sensing. In the future, our approach will enable the development of two-dimensional sensing arrays facilitating spatially and temporally correlated magnetometry.
  arXiv  Detail & Related papers  (2020-12-04T12:59:29Z)
• Optimisation of a diamond nitrogen vacancy centre magnetometer for sensing of biological signals [44.62475518267084]
  We present advances in biomagnetometry using nitrogen vacancy centres in diamond. We show magnetic field sensitivity of approximately 100 pT/$sqrtHz$ in the DC/low frequency range using a setup designed for biological measurements.
  arXiv  Detail & Related papers  (2020-04-05T18:44:34Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.