Abstract
Classical sensors for spectrum analysis are widely used but lack micro- or nanoscale spatial resolution. On the other hand, quantum sensors, capable of working with nanoscale precision, do not provide precise frequency resolution over a wide range of frequencies. Using a single spin in diamond, we present a measurement protocol for quantum probes which enables full signal reconstruction on a nanoscale spatial resolution up to potentially 100 GHz. We achieve 58nT/Hz amplitude and 0.095rad/Hz phase sensitivity and a relative frequency uncertainty of 10-12 for a 1.51 GHz signal within 10 s of integration. This technique opens the way to quantum spectrum analysis methods with potential applications in electron spin detection and nanocircuitry in quantum technologies.
Original language | English |
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Article number | L020602 |
Journal | Physical Review A |
Volume | 104 |
Issue number | 2 |
DOIs | |
Publication status | Published - Aug 2021 |