141 citations · 875 across the 52 of their papers we have counts for
51 papers · 1 filter
Realization of Trapped Ion Dynamics in the Strong-Field Regime and Non-Markovianity
Kamran Rehan, Hengchao Tu, Tadeu Tassis +5
We experimentally investigate trapped ion dynamics in the strong-driving regime, where the Rabi frequency (Omega) is comparable to the vibrational mode frequency (nu). In the conve…
Resonator-assisted quantum transduction between superconducting qubits and trapped atomic systems via Rydberg levels
Fernando L. Semião, Matthias Keller
Using a shared microwave resonator, we propose a transduction scheme between superconducting qubits and qubit states encoded in the low-lying internal levels of trapped atomic syst…
Thermal transport through a single trapped ion under strong laser illumination
T. Tassis, F. Brito, F. L. Semião
In this work, we study quantum heat transport in a single trapped ion, driven by laser excitation and coupled to thermal reservoirs operating at different temperatures. Our focus l…
Trapped ions beyond carrier and sideband interactions
T. Tassis, F. L. Semião
Trapped ions driven by electromagnetic radiation constitute one of the most developed quantum technologies to date. The scenarios range from proof-of-principle experiments to on-ch…
Pulsed multireservoir engineering for a trapped ion with applications to state synthesis and quantum Otto cycles
Wallace S. Teixeira, Matthias K. Keller, Fernando L. Semião
Conducting an open quantum system towards a desired steady state through reservoir engineering is a remarkable task that takes dissipation and decoherence as tools rather than impe…
Time-Dependent Dephasing and Quantum Transport
Saulo V. Moreira, Breno Marques, Fernando L. Semião
The investigation of the phenomenon of dephasing assisted quantum transport, which happens when the presence of dephasing benefits the efficiency of this process, has been mainly f…
Assessment of weak-coupling approximations on a driven two-level system under dissipation
Wallace S. Teixeira, Fernando L. Semião, Jani Tuorila +1
The standard weak-coupling approximations associated to open quantum systems have been extensively used in the description of a two-level quantum system, qubit, subjected to relati…
In and out of equilibrium quantum metrology with mean-field quantum criticality
Sascha Wald, Saulo V. Moreira, Fernando L. Semião
We study the influence that collective transition phenomena have on quantum metrological protocols. The single spherical quantum spin (SQS) serves as stereotypical toy model that a…
Enhancing quantum transport efficiency by tuning non-Markovian dephasing
Saulo V. Moreira, Breno Marques, Rafael R. Paiva +3
We consider the problem of energy transport in a chain of coupled dissipative quantum systems in the presence of non-Markovian dephasing. We use a model of non-Markovianity which i…
Pulse engineering for population control under dephasing and dissipation
I. Medina, F. L. Semião
We apply reverse-engineering to find electromagnetic pulses that allow for the control of populations in quantum systems under dephasing and thermal noises. In particular, we discu…
Investigating nonclassicality in nonlinear electronic spectroscopy
Saulo V. Moreira, Fernando L. Semião
In this work, we establish a connection between nonlinear electronic spectroscopy and the protocol for the non-disturbance condition, the non-fullfilment of which is a witness of n…
Inducing nontrivial qubit coherence through a controlled dispersive environment
W. S. Teixeira, F. Nicacio, F. L. Semião
We show how the dispersive regime of the Jaynes-Cummings model may serve as a valuable tool to the study of open quantum systems. We employ it in a bottom-up approach to build an e…
Dynamical chaotic phases and constrained quantum dynamics
André M. Timpanaro, Sascha Wald, Fernando Semião +1
In classical mechanics, external constraints on the dynamical variables can be easily implemented within the Lagrangian formulation. Conversely, the extension of this idea to the q…
Energy transport in the presence of entanglement
A. A. Cifuentes, F. L. Semião
In this work, we investigate how the presence of initial entanglement affects energy transport in a network. The network have sites dedicated to incoherent input or output of energ…
Transmission losses in optical qubits for controlled teleportation
I. Medina, F. L. Semião
In this work, we investigate the controlled teleportation protocol using optical qubits within the single-rail logic. The protocol makes use of an entangled tripartite state shared…
Coupled modes locally interacting with qubits: critical assessment of the rotating wave approximation
P. C. Cárdenas, W. S. Teixeira, F. L. Semião
The interaction of qubits with quantized modes of electromagnetic fields has been largely addressed in the quantum optics literature under the rotating wave approximation (RWA), wh…
Performance of dynamical decoupling in bosonic environments and under pulse-timing fluctuations
W. S. Teixeira, K. T. Kapale, M. Paternostro +1
We study the suppression of qubit dephasing through Uhrig dynamical decoupling (UDD) in nontrivial environments modeled within the spin-boson formalism. In particular, we address t…
Transport of Correlations in a Harmonic Chain
F. Nicacio, F. L. Semião
We study the propagation of different types of correlations through a quantum bus formed by a chain of coupled harmonic oscillators. This includes steering, entanglement, mutual in…
Non-equilibrium properties of trapped ions under sudden application of a laser
A. A. Cifuentes, F. Nicacio, M. Paternostro +1
Coherent quantum-state manipulation of trapped ions using classical laser fields is a trademark of modern quantum technologies. In this work, we study aspects of work statistics an…
Experimental determination of irreversible entropy production in out-of-equilibrium mesoscopic quantum systems
M. Brunelli, L. Fusco, R. Landig +9
By making use of a recently proposed framework for the inference of thermodynamic irreversibility in bosonic quantum systems, we experimentally measure and characterize the entropy…
Coupled Harmonic Systems as Quantum Buses in Thermal Environments
F. Nicacio, F. L. Semião
In this work, we perform a careful study of an special arrangement of coupled systems that consists of two external harmonic oscillators weakly coupled to an arbitrary network (dat…
Quantum thermodynamics and work fluctuations with applications to magnetic resonance
Wellington L. Ribeiro, Gabriel T. Landi, Fernando Semião
In this paper we give a pedagogical introduction to the ideas of quantum thermodynamics and work fluctuations, using only basic concepts from quantum and statistical mechanics. Aft…
Thermal transport in out of equilibrium quantum harmonic chains
F. Nicacio, A. Ferraro, A. Imparato +2
We address the problem of heat transport in a chain of coupled quantum harmonic oscillators, exposed to the influences of local environments of various nature, stressing the effect…
Cavity-aided quantum parameter estimation in a bosonic double-well Josephson junction
M. Zuppardo, J. P. Santos, G. De Chiara +3
We describe an apparatus designed to make non-demolition measurements on a Bose-Einstein condensate (BEC) trapped in a double-well optical cavity. This apparatus contains, as well…