8 papers
Magnetoelastic control of quantum correlations and field sensitivity in a spin-1/2 Heisenberg dimer
E. W. B. de Souza, Moises Rojas, Onofre Rojas
We investigate the thermodynamic and quantum properties of a magnetoelastic spin-1/2 Heisenberg dimer, where the exchange interaction depends on the dimer displacement. By combinin…
A single-electron double quantum dot with Rashba spin-orbit interaction as a working substance for heat machines
Ivan Romualdo de Oliveira, VinÃcius N. A. Lula-Rocha, Moises Rojas
We investigate the thermodynamic performance of a quantum Otto machine whose working substance is a single electron confined in a double quantum dot under an external magnetic fiel…
Versatile probe state preparation via generalized measurements for quantum sensing and thermometry
Jonas F. G. Santos, Shanhe Su, Moises Rojas
We investigate a probe state preparation protocol based on two non-selective generalized quantum measurements to enhance parameter estimation in single-qubit systems. By fine-tunin…
Nonselective generalized measurements as a resource for quantum thermal machines in a double quantum dot
Bruno Carvalho, Jonas F. G. Santos, Moises Rojas
We investigated quantum thermal machines powered by sequential nonselective generalized measurements, taking a double quantum dot with coherent interdot tunneling as a working subs…
Operational modes of a Raman-coupled two-qubit quantum thermal machine
Alonso Alcalá, Charlie Oncebay, Onofre Rojas +1
We investigate a quantum thermal machine composed of two qubits coupled through a Raman-induced exchange interaction and driven by inhomogeneous transition frequencies. The system…
Quantum Otto engine mimicking Carnot near pseudotransitions in the one-dimensional extended Hubbard model in the atomic limit
Onofre Rojas, Moises Rojas, S. M. de Souza
The one-dimensional extended Hubbard model (EHM) in the atomic limit has recently been found to exhibit a curious thermal pseudo-transition behavior, which closely resembles first…