Precision Multi-Mode Microwave Spectroscopy of Paramagnetic and Rare-Earth Ion Spin Defects in Single Crystal Calcium Tungstate

• URL: http://arxiv.org/abs/2312.05199v3
• Date: Tue, 9 Jul 2024 12:42:23 GMT
• Title: Precision Multi-Mode Microwave Spectroscopy of Paramagnetic and Rare-Earth Ion Spin Defects in Single Crystal Calcium Tungstate
• Authors: Elrina Hartman, Michael E Tobar, Ben T McAllister, Jeremy Bourhill, Maxim Goryachev,
• Abstract summary: We present experimental observations of dilute ion spin ensemble defects in a low-loss single crystal cylindrical sample of CaWO$_4$ cooled to 30 mK in temperature. The resonator exhibited numerous whispering gallery modes with high Q-factors of up to $3times 107$, equivalent to a low loss tangent of $sim 3times 10-8$.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We present experimental observations of dilute ion spin ensemble defects in a low-loss single crystal cylindrical sample of CaWO$_4$ cooled to 30 mK in temperature. Crystal field perturbations were elucidated by constructing a dielectrically loaded microwave cavity resonator from the crystal. The resonator exhibited numerous whispering gallery modes with high Q-factors of up to $3\times 10^7$, equivalent to a low loss tangent of $\sim 3\times 10^{-8}$. The low-loss allowed precision multi-mode spectroscopy of numerous high Q-factor photon-spin interactions. Measurements between 7 to 22 GHz revealed the presence of Gd$^{3+}$, Fe$^{3+}$, and another trace species, inferred to be rare-earth, at concentrations on the order of parts per billion. These findings motivate further exploration of prospective uses of this low-loss dielectric material for applications regarding precision and quantum metrology, as well as tests for beyond standard model physics.

Related papers

• Site-Controlled Purcell-Induced Bright Single Photon Emitters in Hexagonal Boron Nitride [62.170141783047974]
  Single photon emitters hosted in hexagonal boron nitride (hBN) are essential building blocks for quantum photonic technologies that operate at room temperature. We experimentally demonstrate large-area arrays of plasmonic nanoresonators for Purcell-induced site-controlled SPEs. Our results offer arrays of bright, heterogeneously integrated quantum light sources, paving the way for robust and scalable quantum information systems.
  arXiv  Detail & Related papers  (2024-05-03T23:02:30Z)
• Dielectric microwave resonator with large optical apertures for spin-based quantum devices [0.0]
  Microwave resonator with internal quality factor of $2.30times104$ accommodated optical apertures with a diameter of $8, mathrmmm$. We performed both continuous-wave (cw) and pulse electron spin resonance (ESR) spectroscopy on 2,2-diphenyl-1-picrylhydrazyl (DPPH) crystalline powder and P1 centers in a diamond crystal in a dilution refrigerator.
  arXiv  Detail & Related papers  (2024-03-13T12:18:37Z)
• Electron Paramagnetic Resonance spectroscopy of a scheelite crystal using microwave photon counting [0.0]
  Counting the microwave photons emitted by an ensemble of electron spins when they relax radiatively has been introduced as a sensitive new method for electron paramagnetic resonance spectroscopy at millikelvin temperatures. Here, we apply this spin fluorescence method to a scheelite crystal of CaWO4.
  arXiv  Detail & Related papers  (2024-02-05T15:30:56Z)
• A continuous-wave and pulsed X-band electron spin resonance spectrometer operating in ultra-high vacuum for the study of low dimensional spin ensembles [1.1592317652525155]
  We report the development of a continuous-wave and pulsed X-band electron spin resonance (ESR) spectrometer for the study of spins on ordered surfaces down to cryogenic temperatures. The spectrometer operates in ultra-high vacuum and utilizes a half-line microstrip resonator realized using epially grown copper films on single crystal Al$$O$_3$ substrates.
  arXiv  Detail & Related papers  (2023-12-01T09:54:02Z)
• Phononically shielded photonic-crystal mirror membranes for cavity quantum optomechanics [48.7576911714538]
  We present a highly reflective, sub-wavelength-thick membrane resonator featuring high mechanical quality factor. We construct a Fabry-Perot-type optical cavity, with the membrane forming one terminating mirror. We demonstrate optomechanical sideband cooling to mK-mode temperatures, starting from room temperature.
  arXiv  Detail & Related papers  (2022-12-23T04:53:04Z)
• Near-monochromatic tuneable cryogenic niobium electron field emitter [48.7576911714538]
  We describe electron field emission from a monocrystalline, superconducting niobium nanotip at a temperature of 5.9 K. The emitted electron energy spectrum reveals an ultra-narrow distribution down to 16 meV. This source will decrease the impact of lens aberration and enable new modes in low-energy electron microscopy, electron energy loss spectroscopy, and high-resolution vibrational spectroscopy.
  arXiv  Detail & Related papers  (2022-05-11T20:46:21Z)
• Electron-spin spectral diffusion in an erbium doped crystal at millikelvin temperatures [0.8961088845748072]
  We characterize the spectral diffusion processes that limit the electron-spin coherence of Er ions at millikelvin temperatures. The coherence time shows a strong temperature dependence, reaching 1.3 ms at 23 mK for an electron-spin transition of $167textEr$.
  arXiv  Detail & Related papers  (2022-03-28T18:20:47Z)
• The thickness dependence of quantum oscillations in ferromagnetic Weyl metal SrRuO$_{3}$ [4.354101112823455]
  Weyl metal SrRuO$_3$ thin films with different thicknesses were grown on miscut Sr$_3$ (001) substrates. Magneto-transport measurements were carried out in magnetic fields up to 35 T. We discovered a frequency $F approx$ 30 T at low temperatures and above 3 T that corresponds to a small Fermi pocket with a light effective mass.
  arXiv  Detail & Related papers  (2021-12-26T08:04:28Z)
• High-resolution 'magic'-field spectroscopy on trapped polyatomic molecules [62.997667081978825]
  Rapid progress in cooling and trapping of molecules has enabled first experiments on high resolution spectroscopy of trapped diatomic molecules. Extending this work to polyatomic molecules provides unique opportunities due to more complex geometries and additional internal degrees of freedom.
  arXiv  Detail & Related papers  (2021-10-21T15:46:17Z)
• Open-cavity in closed-cycle cryostat as a quantum optics platform [47.50219326456544]
  We present a fiber-based open Fabry-P'erot cavity in a closed-cycle cryostat exhibiting ultra-high mechanical stability. This set of results manifests open-cavity in a closed-cycle cryostat as a versatile and powerful platform for low-temperature cavity QED experiments.
  arXiv  Detail & Related papers  (2021-03-09T18:41:48Z)
• Resonant high-energy bremsstrahlung of ultrarelativistic electrons in the field of a nucleus and a pulsed light wave [68.8204255655161]
  Research investigates the resonant high-energy spontaneous bremsstrahlung of ultrarelativistic electrons with considerable energies in the field of a nucleus and a quasimonochromatic laser wave.
  arXiv  Detail & Related papers  (2020-04-05T16:27:11Z)

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.