37 citations · 130 across the 12 of their papers we have counts for
12 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…
Optimal Sensing Protocol for Statistically Polarized Nano-NMR with NV Centers
Nicolas Staudenmaier, Anjusha Vijayakumar-Sreeja, Genko Genov +6
Diffusion noise represents a major constraint to successful liquid state nano-NMR spectroscopy. Using the Fisher information as a faithful measure, we theoretically calculate and e…
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…
Power-law scaling of correlations in statistically polarised nano-NMR
Nicolas Staudenmaier, Anjusha Vijayakumar-Sreeja, Santiago Oviedo-Casado +13
Diffusion noise is a major source of spectral line broadening in liquid state nano-scale nuclear magnetic resonance with shallow nitrogen-vacancy centres, whose main consequence is…
Zero- and Low-Field Sensing with Nitrogen Vacancy Centers
Philipp J. Vetter, Alastair Marshall, Genko T. Genov +8
Over the years, an enormous effort has been made to establish nitrogen vacancy (NV) centers in diamond as easily accessible and precise magnetic field sensors. However, most of the…
Correlated noise in Brownian motion allows for super resolution
Santiago Oviedo-Casado, Amit Rotem, Ramil Nigmatullin +2
Diffusion broadening of spectral lines is the main limitation to frequency resolution in non-polarized liquid state nano-NMR. This problem arises from the limited amount of informa…
Magnetic pulses enable multidimensional optical spectroscopy of dark states
Santiago Oviedo-Casado, František Šanda, Jürgen Hauer +1
The study and manipulation of low dipole moment quantum states has been challenging due to their inaccessibility by conventional spectroscopic techniques. Controlling the spin in s…
On the theory of excitonic delocalization for robust vibronic dynamics in LH2
Felipe Caycedo-Soler, James Lim, Santiago Oviedo-Casado +3
Nonlinear spectroscopy has revealed long-lasting oscillations in the optical response of a variety of photosynthetic complexes. Different theoretical models which involve the coher…
Magnetic fields: a tool for the study of organic solar cells
S. Oviedo-Casado, A. Urbina, J. Prior
Charge transfer in polymer devices represents a crucial, though highly inaccessible stage of photocurrent generation. In this article we propose studying the properties and behavio…
Limits on Spectral Resolution Measurements by Quantum Probes
Amit Rotem, Tuvia Gefen, Santiago Oviedo-Casado +6
The limits of frequency resolution in nano-NMR experiments have been discussed extensively in recent years. It is believed that there is a crucial difference between the ability to…