22 citations · 48 across the 8 of their papers we have counts for
9 papers
Engineering Quantum Interactions: From Effective Models to Validated Physical Predictions
Sinara S. Dourado, Ciro Micheletti Diniz, Gabriel P. L. M. Fernandes +3
Effective models make complex quantum dynamics tractable by retaining only the states, processes, and timescales relevant to a given physical question. Their predictive power, howe…
Trapped-ion toolbox to simulate quantum Otto heat engines
Rogério Jorge de Assis, Ciro Micheletti Diniz, Norton Gomes de Almeida +1
We present a scheme that utilizes an ion confined within a bi-dimensional trap to simulate a quantum Otto heat engine whose working substance is a two-level system. In this scheme,…
Optimizing resetting of superconducting qubits
Ciro M. Diniz, Rogerio J. de Assis, Norton G. de Almeida +1
Many quantum algorithms demand a large number of repetitions to obtain reliable statistical results. Thus, at each repetition it is necessary to reset the qubits efficiently and pr…
Cooling with fermionic reservoir
Gabriella G. Damas, Rogério J. de Assis, Norton G. de Almeida
Recently, much emphasis has been given to genuinely quantum reservoirs generically called fermionic reservoirs. These reservoirs are characterized by having finite levels, as oppos…
Negative temperature is cool for cooling
Gabriella G. Damas, Rogério J. de Assis, Norton G. de Almeida
In this work, we study an autonomous refrigerator composed of three qubits [Phys. Rev. Lett. 105, 130401 (2010)] operating with one of the reservoirs at negative temperatures, whic…
Thermodynamics of the Ramsey Zone
Rogério Jorge de Assis, Ciro Micheletti Diniz, Celso Jorge Villas-Bôas +1
We carry out a study on thermodynamics properties as entropy and heat and work fluxes involved in a Ramsey zone, i.e., a mode field inside a low quality factor cavi…
Two-level quantum Otto heat engine operating with unit efficiency far from the quasi-static regime under a squeezed reservoir
Rogério J. de Assis, J. S. Sales, Udson C. Mendes +1
Recent theoretical and experimental studies in quantum heat engines show that, in the quasi-static regime, it is possible to have higher efficiency than the limit imposed by Carnot…
Unambiguous discrimination of nonorthogonal quantum states in cavity QED
R. J. de Assis, J. S. Sales, N. G. de Almeida
We propose an oversimplified scheme to unambiguously discriminate nonorthogonal quantum field states inside high-Q cavities. Our scheme, which is based on positive operator-valued…
Negative response with optical cavity and traveling wave fields
R. J. de Assis, C. J. Villas-Boas, N. G. de Almeida
We present a feasible protocol using traveling wave field to experimentally observe negative response, i.e., to obtain a decrease in the output field intensity when the input field…