14 citations · 59 across the 10 of their papers we have counts for
10 papers
Quantum Crossovers Revealed by Local Measurements
A. C. S. Costa, E. C. Diniz, O. P. de Sa Neto
Quantum crossover phenomena play a central role in few-body open quantum systems, yet their identification often relies on global or model-dependent indicators. In this work, we de…
Absorption-based qubit estimation in discrete-time quantum walks
Edgard P. M. Amorim, Lorena R. Cerutti, O. P. de Sá Neto +1
We investigate state estimation in discrete-time quantum walks with a single absorbing boundary. Using a spectral approach, we obtain closed expressions for the escape probability…
Nanomechanically Induced Transparency
E. C. Diniz, O. P. de Sá Neto
In this paper, we investigate a nanomechanically induced transparency (NIT) effects that arises from the coupling of a nanoelectromechanical system and a trapped ion. By confining…
Temperature estimation of an entangled pair of trapped ions
O. P. de Sá Neto, H. A. S. Costa, G. A. Prataviera +1
We apply estimation theory to a system formed by two interacting trapped ions. By using the Fisher matrix formalism, we introduce a simple scheme for estimation of the temperature…
A Simple Scheme for Quantum Non Demolition of Phonons Number of the Nanoelectromechanics Systems
F. R. de S. Nunes, J. J. I. de Souza, D. A. Souza +2
In this work we describe a scheme to perform a continuous over time quantum non demolition (QND) mea- surement of the number of phonons of a nanoelectromechanical system (NEMS). Ou…
Temperature Measurement and Phonon Number Statistics of a Nanoelectromechanical Resonator
O. P. de Sá Neto, M. C. de Oliveira, G. J. Milburn
Measuring thermodynamic quantities can be easy or not, depending on the system that is being studied. For a macroscopic object, measuring temperatures can be as simple as measuring…
Quantum simulation of the Anderson Hamiltonian with an array of coupled nanoresonators: delocalization and thermalization effects
J. Lozada-Vera, A. Carrillo, O. P. de Sá Neto +3
The possibility of using nanoelectromechanical systems as a simulation tool for quantum many-body effects is explored. It is demonstrated that an array of electrostatically coupled…
Capacitive Coupling of Two Transmission Line Resonators Mediated by the Phonon Number of a Nanoelectromechanical Oscillator
O. P. de Sá Neto, M. C. de Oliveira, F. Nicacio +1
Detection of quantum features in mechanical systems at the nanoscale constitutes a challenging task, given the weak interaction with other elements and the available technics. Here…
Hybrid Qubit gates in circuit QED: A scheme for quantum bit encoding and information processing
O. P. de Sa Neto, M. C. de Oliveira
Solid state superconducting devices coupled to coplanar transmission lines offer an exquisite architecture for quantum optical phenomena probing as well as for quantum computation…
Generation of Superposition States and Charge-Qubit Relaxation Probing in a Circuit
O. P. de Sa Neto, M. C. de Oliveira, A. O. Caldeira
We demonstrate how a superposition of coherent states can be generated for a microwave field inside a coplanar transmission line coupled to a single superconducting charge qubit, w…