4 papers
Zero-field dipolar decoupling of color center ensembles via universal qutrit control
Antonio Verdú, Ana Teresa Gea-Caballero, Santiago Oviedo-Casado +2
Dipolar interactions are a major source of decoherence in dense ensembles of color centers in diamond. Current protocols demand using bias magnetic fields detrimental in many scena…
Ramsey correlation spectroscopy with phase cycling using a single quantum sensor
Inbar Zohar, Santiago Oviedo-Casado, Andrej Denisenko +2
Magnetic spectroscopy at the nanoscale provides unique insights into material properties and dynamics, with quantum sensors like nitrogen-vacancy (NV) centers being ideally suited…
Spectrum analysis with parametrically modulated transmon qubits
Nir Gavrielov, Santiago Oviedo-Casado, Alex Retzker
Exploring the noise spectrum impacting a qubit and extending its coherence duration are fundamental components of quantum technologies. In this study, we introduce parametric spect…
Low frequency signal detection via correlated Ramsey measurements
Santiago Oviedo-Casado, Javier Prior, Javier Cerrillo
The low frequency region of the spectrum is a challenging regime for quantum probes. We support the idea that, in this regime, performing Ramsey measurements carefully controlling…