Enhanced quantum sensing with room-temperature solid-state masers
- URL: http://arxiv.org/abs/2201.04298v2
- Date: Thu, 13 Jan 2022 08:07:00 GMT
- Title: Enhanced quantum sensing with room-temperature solid-state masers
- Authors: Hao Wu, Shuo Yang, Mark Oxborrow, Qing Zhao, Bo Zhang, Jiangfeng Du
- Abstract summary: Several solid-state spin sensors have been developed, facilitating the ultra-sensitive detection of physical quantities such as magnetic and electric fields and temperature.
Here, we experimentally demonstrate that such drawbacks can be overcome by newly reborn maser technology at room temperature in the solid state.
We observe a 4-fold reduction in the inhomogeneously broadened linewidth of a molecular spin ensemble, which is narrower than the same measured from single spins at cryogenic temperatures.
- Score: 20.26121386576863
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Quantum sensing with solid-state systems finds broad applications in diverse
areas ranging from material and biomedical sciences to fundamental physics.
Several solid-state spin sensors have been developed, facilitating the
ultra-sensitive detection of physical quantities such as magnetic and electric
fields and temperature. Exploiting collective behaviour of non-interacting
spins holds the promise of pushing the detection limit to even lower levels,
while to date, those levels are scarcely reached due to the broadened linewidth
and inefficient readout of solid-state spin ensembles. Here, we experimentally
demonstrate that such drawbacks can be overcome by newly reborn maser
technology at room temperature in the solid state. Owing to maser action, we
observe a 4-fold reduction in the inhomogeneously broadened linewidth of a
molecular spin ensemble, which is narrower than the same measured from single
spins at cryogenic temperatures. The maser-based readout applied to
magnetometry showcases a signal-to-noise ratio (SNR) of 30 dB for single shots.
This technique would be a significant addition to the toolbox for boosting the
sensitivity of solid-state ensemble spin sensors.
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