Environmental noise spectroscopy with qubits subjected to dynamical decoupling
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2017-06-01 |
| Journal | Journal of Physics Condensed Matter |
| Authors | P SzaĹkowski, G Ramon, J. Krzywda, D. Kwiatkowski, Ĺ. CywiĹski |
| Institutions | Polish Academy of Sciences, Santa Clara University |
| Citations | 109 |
Abstract
Section titled âAbstractâA qubit subjected to pure dephasing due to classical Gaussian noise can be turned into a spectrometer of this noise by utilizing its readout under properly chosen dynamical decoupling (DD) sequences to reconstruct the power spectral density of the noise. We review the theory behind this DD-based noise spectroscopy technique, paying special attention to issues that arise when the environmental noise is non-Gaussian and/or it has truly quantum properties. While we focus on the theoretical basis of the method, we connect the discussed concepts with specific experiments, and provide an overview of environmental noise models relevant for solid-state based qubits, including quantum-dot based spin qubits, superconducting qubits, and NV centers in diamond.