High-contrast absorption magnetometry in the visible to near-infrared range with nitrogen-vacancy ensembles

• URL: http://arxiv.org/abs/2412.07798v1
• Date: Fri, 06 Dec 2024 11:10:55 GMT
• Title: High-contrast absorption magnetometry in the visible to near-infrared range with nitrogen-vacancy ensembles
• Authors: Florian Schall, Felix A. Hahl, Lukas Lindner, Xavier Vidal, Tingpeng Luo, Alexander M. Zaitsev, Takeshi Ohshima, Jan Jeske, Rüdiger Quay,
• Abstract summary: We show a phenomenon of broadband optical absorption by the NV centers starting in the emission wavelength and reaching up to 1000 nm. The lower level of the absorbing transition could be the energetically lower NV singlet state. This opens a new detection wavelength regime with coherent laser signal detection for high-sensitivity NV magnetometry.
• Score: 33.7054351451505
• License:
• Abstract: Magnetometry with nitrogen-vacancy (NV) centers has so far been measured via emission of light from NV centers or via absorption at the singlet transition at 1042 nm. Here, we demonstrate a phenomenon of broadband optical absorption by the NV centers starting in the emission wavelength and reaching up to 1000 nm. The measurements are enabled by a high-finesse cavity, which is used for room temperature continuous wave pump-probe experiments. The red to infrared probe beam shows the typical optically detected magnetic resonance (ODMR) signal of the NV spin with contrasts up to 42 %. This broadband optical absorption is not yet reported in terms of NV magnetometry. We argue that the lower level of the absorbing transition could be the energetically lower NV singlet state, based on the increased optical absorption for a resonant microwave field and the spectral behavior. Investigations of the photon-shot-noise-limited sensitivity show improvements with increasing probe wavelength, reaching an optimum of 7.5 pT/$\sqrt{\mathrm{Hz}}$. The results show significantly improved ODMR contrast compared to emission-based magnetometry. This opens a new detection wavelength regime with coherent laser signal detection for high-sensitivity NV magnetometry.

Related papers

• All-Optical Photoluminescence Spectra of Nitrogen-Vacancy Ensembles in Diamond at Low Magnetic Fields [0.5617572524191751]
  All-optical (AO), microwave-free magnetometry using nitrogen-vacancy (NV) centers in diamond is attractive due to its broad sample compatibility and reduced experimental complexity. In this work, we investigate room-temperature AO photoluminescence (PL) at low magnetic fields using diamonds with NV ensembles at ppm concentrations.
  arXiv  Detail & Related papers  (2025-02-17T15:56:21Z)
• A New Bite Into Dark Matter with the SNSPD-Based QROCODILE Experiment [55.46105000075592]
  We present the first results from the Quantum Resolution-d Cryogenic Observatory for Dark matter Incident at Low Energy (QROCODILE) The QROCODILE experiment uses a microwire-based superconducting nanowire single-photon detector (SNSPD) as a target and sensor for dark matter scattering and absorption. We report new world-leading constraints on the interactions of sub-MeV dark matter particles with masses as low as 30 keV.
  arXiv  Detail & Related papers  (2024-12-20T19:00:00Z)
• Towards high-sensitivity magnetometry with nitrogen vacancy centers in diamond using the singlet infrared absorption [0.0]
  We report on the optimization efforts of the magnetometer sensitivity at room temperature and without cavities. We reach sensitivities of 18 pT$/sqrtmathrmHz$, surpassing previously reported values. We also report on a defect that is native to CVD-grown diamond and thus absent in HPHT diamond, the excitation of which impacts the measured singlet absorption signal.
  arXiv  Detail & Related papers  (2024-10-28T09:50:40Z)
• High temperature spectroscopy of nitrogen vacancy centers in diamond [0.0]
  Spin resonances are studied using optical detection of magnetic resonance (ODMR) Optical spectroscopy is employed to study radiative transitions. In addition, the ODMR resonance frequencies were decreased, and the phonon line emission shifted to higher wavelengths.
  arXiv  Detail & Related papers  (2022-09-26T10:20:48Z)
• Hot-Band Absorption Can Mimic Entangled Two-Photon Absorption [52.77024349608834]
  We investigated the fluorescence signals from Rhodamine 6G and LDS798 excited with a CW laser or an entangled photon pair source at 1060 nm. We observed a signal that originates from hot-band absorption (HBA), which is one-photon absorption from thermally-populated vibrational levels of the ground electronic state. For the typical conditions under which E2PEF measurements are performed, contributions from the HBA process could lead to a several orders-of-magnitude overestimate of the quantum advantage for excitation efficiency.
  arXiv  Detail & Related papers  (2021-11-10T21:17:47Z)
• Spectral multiplexing of telecom emitters with stable transition frequency [68.8204255655161]
  coherent emitters can be entangled over large distances using photonic channels. We observe around 100 individual erbium emitters using a Fabry-Perot resonator with an embedded 19 micrometer thin crystalline membrane. Our results constitute an important step towards frequency-multiplexed quantum-network nodes operating directly at a telecommunication wavelength.
  arXiv  Detail & Related papers  (2021-10-18T15:39:07Z)
• 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)
• 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)
• Absorption-Based Diamond Spin Microscopy on a Plasmonic Quantum Metasurface [0.0]
  Nitrogen vacancy (NV) centers in diamond have emerged as a leading quantum sensor platform. "Plasmonic quantum sensing metasurface" (PQSM) combines localized surface plasmon polariton resonances with long-range Rayleigh-Wood anomaly modes.
  arXiv  Detail & Related papers  (2020-11-10T04:20:27Z)
• Cross-relaxation studies with optically detected magnetic resonances in nitrogen-vacancy centers in diamond in an external magnetic field [0.0]
  Cross-relaxation between nitrogen-vacancy centers and substitutional nitrogen in a diamond crystal was studied. Optically detected magnetic resonance signals (ODMR) can be used to measure these signals successfully.
  arXiv  Detail & Related papers  (2020-07-01T13:23:22Z)

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.