18 citations · 34 across the 6 of their papers we have counts for
6 papers
Parametrized Variational Quantum Tomography
V. A. Penas, M. Losada, D. Tielas +1
Quantum state tomography provides a fundamental framework for reconstructing quantum states. When the measurement data are not informationally complete, the observed statistics adm…
Group-invariant estimation of symmetric states generated by noisy quantum computers
Federico Holik, Marcelo Losada, Giannina Zerr +2
The problem of quantum state estimation is crucial in the development of quantum technologies. In particular, the use of symmetric quantum states is useful in many relevant applica…
Parameterizing density operators with arbitrary symmetries to gain advantage in quantum state estimation
Inés Corte, Marcelo Losada, Diego Tielas +2
In this work, we show how to parameterize a density matrix that has an arbitrary symmetry, knowing the generators of the Lie algebra (if the symmetry group is a connected Lie group…
Performance of the quantum MaxEnt estimation in the presence of physical symmetries
Diego Tielas, Marcelo Losada, Lorena Rebón +1
When an informationally complete measurement is not available, the reconstruction of the density operator that describes the state of a quantum system can be accomplish, in a relia…
Excepional Points from Hamiltonians of hybrid physical systems: Squeezing and anti-Squeezing
Romina Ramirez, Marta Reboiro, Diego Tielas
We study the appearance of Exceptional Points in a hybrid system composed of a superconducting flux-qubit and an ensemble of nitrogen-vacancy colour centres in diamond. We discuss…
Spontaneous symmetry breaking induced by quantum monitoring
Luis Pedro García-Pintos, Diego Tielas, Adolfo del Campo
Spontaneous symmetry breaking (SSB) is responsible for structure formation in scenarios ranging from condensed matter to cosmology. SSB is broadly understood in terms of perturbati…