Efficient and robust signal sensing by sequences of adiabatic chirped pulses

Abstract

We propose a scheme for sensing of an oscillating field in systems with large inhomogeneous broadening and driving field variation by applying sequences of phased, adiabatic, chirped pulses. The latter act as a double filter for dynamical decoupling, where the adiabatic changes of the mixing angle during the pulses rectify the signal and partially remove frequency noise. The sudden changes between the pulses act as instantaneous $\pi$ pulses in the adiabatic basis for additional noise suppression. We also use the pulses' phases to correct for other errors, e.g., due to non-adiabatic couplings. Our technique improves significantly the coherence time in comparison to standard XY8 dynamical decoupling in realistic simulations in NV centers with large inhomogeneous broadening and is suitable for experimental implementations with substantial driving field inhomogeneity. Beyond the theoretical proposal, we also present proof-of-principle experimental results for quantum sensing of an oscillating field in NV centers in diamond, demonstrating superior performance compared to the standard technique.

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Cited by in corpus (12)

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• Robust Detection of High-Frequency Signals at the Nanoscale
• Coherent Control of a Long-Lived Nuclear Memory Spin in a Germanium-Vacancy Multi-Qubit Node
• Robust Noise Suppression and Quantum Sensing by Continuous Phased Dynamical Decoupling
• Numerical Engineering of Robust Adiabatic Operations
• Bayesian-based hybrid method for rapid optimization of NV center sensors
• Investigation and comparison of measurement schemes in the low frequency biosensing regime using solid-state defect centers
• Quantum Memory Enhanced Multipoint Correlation Spectroscopy for Statistically Polarized NMR
• Efficiency of optimal control for noisy spin qubits in diamond
• Robust gigahertz-range ac magnetometry with an ensemble of NV centers in diamond using concatenated continuous dynamical decoupling