Randomization of Pulse Phases for Unambiguous and Robust Quantum Sensing
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2019-05-24 |
| Journal | Physical Review Letters |
| Authors | Zhenyu Wang, J. E. Lang, Simon Schmitt, Johannes Lang, J. Casanova |
| Institutions | UniversitƤt Ulm, University of the Basque Country |
| Citations | 33 |
Abstract
Section titled āAbstractāWe develop theoretically and demonstrate experimentally a universal dynamical decoupling method for robust quantum sensing with unambiguous signal identification. Our method uses randomization of control pulses to simultaneously suppress two types of errors in the measured spectra that would otherwise lead to false signal identification. These are spurious responses due to finite-width Ļ pulses, as well as signal distortion caused by Ļ pulse imperfections. For the cases of nanoscale nuclear-spin sensing and ac magnetometry, we benchmark the performance of the protocol with a single nitrogen vacancy center in diamond against widely used nonrandomized pulse sequences. Our method is general and can be combined with existing multipulse quantum sensing sequences to enhance their performance.