137 citations · 279 across the 12 of their papers we have counts for
12 papers
Thermal Uhlmann phase in a locally driven two-spin system
J. Villavicencio, E. Cota, F. Rojas +3
We study the geometric Uhlmann phase of mixed states at finite temperature in a system of two coupled spin- particles driven by a magnetic field applied to one of the sp…
Uhlmann phase in composite systems with entanglement
J. Villavicencio, E. Cota, F. Rojas +2
We study the geometric Uhlmann phase of entangled mixed states in a composite system made of two coupled spin- particles with a magnetic field acting on one of them. Wit…
Spin-orbit signatures in the dynamics of singlet-triplet qubits in double quantum dots
Juan E. Rolon, Ernesto Cota, Sergio E. Ulloa
We characterize numerically and analytically the signatures of the spin-orbit interaction in a two-electron GaAs double quantum dot in the presence of an external magnetic field. I…
Quasienergy spectrum and tunneling current in ac-driven triple quantum dot shuttles
J Villavicencio, I Maldonado, E Cota +2
The dynamics of electrons in ac driven double quantum dots have been extensively analyzed by means of Floquet theory. In these systems, coherent destruction of tunneling has been s…
Tunnel spectroscopy in ac-driven quantum dot nanoresonators
J. Villavicencio, I. Maldonado, R. Sánchez +2
Electronic transport in a triple quantum dot shuttle device in the presence of an ac field is analyzed within a fully quantum mechanical framework. A generalized density matrix for…
Removing spin blockade by photon-assisted tunneling in double quantum dots
R. Sánchez, G. Platero, R. Aguado +1
Pauli exclusion principle can lead to a supression of transport through double quantum dots, even if both quantum dots are connected by a resonant driving ac field. In this work, w…