Boss, Jens M.
Degen, Christian L.
- Journal Article
Rights / licenseCreative Commons Attribution 4.0 International
We realize a two-qubit sensor designed for achieving high-spectral resolution in quantum sensing experiments. Our sensor consists of an active “sensing qubit” and a long-lived “memory qubit”, implemented by the electronic and the nitrogen-15 nuclear spins of a nitrogen-vacancy center in diamond, respectively. Using state storage times of up to 45 ms, we demonstrate spectroscopy of external ac signals with a line width of 19 Hz (∼2.9 ppm) and of carbon-13 nuclear magnetic resonance signals with a line width of 190 Hz (∼74 ppm). This represents an up to 100-fold improvement in spectral resolution compared to measurements without nuclear memory Show more
Journal / seriesNPJ QUANTUM INFORMATION
Pages / Article No.
PublisherNature Publishing Group
Organisational unit03906 - Degen, Christian / Degen, Christian
137520 - Ultra-sensitive magnetometry with single spins in diamond: Device fabrication, spin manipulation, and application to nanoscale imaging (SNF)
611143 - DIAmond Devices Enabled Metrology and Sensing (EC)
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