Spurious harmonic response of multipulse quantum sensing sequences

Abstract

Multipulse sequences based on Carr-Purcell decoupling are frequently used for narrow-band signal detection in single spin magnetometry. We have analyzed the behavior of multipulse sensing sequences under real-world conditions, including finite pulse durations and the presence of detunings. We find that these non-idealities introduce harmonics to the filter function, allowing additional frequencies to pass the filter. In particular, we find that the XY family of sequences can generate signals at the 2fac, 4fac and 8fac harmonics and their odd subharmonics, where fac is the ac signal frequency. Consideration of the harmonic response is especially important for diamond-based nuclear spin sensing where the NMR frequency is used to identify the nuclear spin species, as it leads to ambiguities when several isotopes are present.

6 pages, 7 figures

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Cited by in corpus (14)

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• Construction and operation of a tabletop system for nanoscale magnetometry with single nitrogen-vacancy centers in diamond
• Nanoscale Solid-State Nuclear Quadrupole Resonance Spectroscopy using Depth-Optimized Nitrogen-Vacancy Ensembles in Diamond
• Pulse-phase control for spectral disambiguation in quantum sensing protocols
• Detection and control of single proton spins in a thin layer of diamond grown by chemical vapor deposition
• Spin coherence and depths of single nitrogen-vacancy centers created by ion implantation into diamond via screening masks
• Unambiguous nuclear spin detection using engineered quantum sensing sequence
• Selective Hybrid Spin Interactions with Low Radiation Power
• AC sensing using nitrogen vacancy centers in a diamond anvil cell up to 6 GPa
• Nanoscale NMR Spectroscopy using Self-Calibrating Nanodiamond Quantum Sensors
• Robust Dynamical Decoupling for the Manipulation of a Spin Network via a Single Spin