666 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universidade Federal do Rio de JaneiroBR289 papers
- Universidade de São PauloBR215 papers
- Centro Brasileiro de Pesquisas FísicasBR188 papers
- Centre National de la Recherche ScientifiqueFR165 papers
- Universidade Estadual de Campinas (UNICAMP)BR156 papers
- Universidade Federal do ABCBR123 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di NapoliIT103 papers
- Radboud University NijmegenNL103 papers
- Universidad Nacional Autónoma de MéxicoMX101 papers
- Universidade do Estado do Rio de JaneiroBR98 papers
- Consejo Nacional de Investigaciones Científicas y TécnicasAR94 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR94 papers
21 papers · 2 filters
Optical simulation of a quantum thermal machine
M. H. M. Passos, Alan C. Santos, Marcelo S. Sarandy +1
We introduce both a theoretical and an experimental scheme for simulating a quantum thermal engine through an all-optical approach, with the behavior of the working substance and t…
Quantum computation from fermionic anyons on a 1D lattice
Allan D. C. Tosta, Daniel J. Brod, Ernesto F. Galvão
Fermionic linear optics corresponds to the dynamics of free fermions, and is known to be efficiently simulable classically. We define fermionic anyon models by deforming the fermio…
Astigmatic tomography of orbital angular momentum superpositions
B. Pinheiro da Silva, D. S. Tasca, E. F. Galvão +1
We use astigmatic transformations to characterize two-dimensional superpositions of Orbital Angular Momentum (OAM) states in laser beams. We propose two methods for doing this, bot…
Novel Effect Induced by Spacetime Curvature in Quantum Hydrodynamics
T. Koide, T. Kodama
The interplay between quantum fluctuation and spacetime curvature is shown to induce an additional quantum-curvature (QC) term in the energy-momentum tensor of fluid using the gene…
Validation of Quantum Adiabaticity through Non-Inertial Frames and Its Trapped-Ion Realization
Chang-Kang Hu, Jin-Ming Cui, Alan C. Santos +5
Validity conditions for the adiabatic approximation are useful tools to understand and predict the quantum dynamics. Remarkably, the resonance phenomenon in oscillating quantum sys…
Stokes-anti-Stokes correlated photon properties akin to photonic Cooper pairs
Filomeno S. de Aguiar Junior, Andre Saraiva, Marcelo F. Santos +6
Photons interact with each other in condensed matter through the same mechanism that forms Cooper pairs in superconductors -- the exchange of virtual phonons [PRL 119, 193603 (2017…
Completely Positive Maps for Reduced States of Indistinguishable Particles
Leonardo da Silva Souza, Tiago Debarba, Diego L. Braga Ferreira +2
We introduce a framework for the construction of completely positive maps for subsystems of indistinguishable fermionic particles. In this scenario, the initial global state is alw…
Contextuality in spin-orbit laser modes
M. H. M. Passos, W. F. Balthazar, J. Acacio de Barros +3
We experimentally observed the violation of Kujula-Dzhafarov noncontextuality inequalities by non-separable spin-orbit laser modes. Qubits are encoded on polarization and transvers…
Non-Markovianity through quantum coherence in an all-optical setup
M. H. M. Passos, P. C. Obando, W. F. Balthazar +3
We propose an all-optical experiment to quantify non-Markovianity in an open quantum system through quantum coherence of a single quantum bit. We use an amplitude damping channel i…
Scrambling and entanglement spreading in long-range spin chains
Silvia Pappalardi, Angelo Russomanno, Bojan Žunkovič +3
We study scrambling in connection to multipartite entanglement dynamics in regular and chaotic long-range spin chains, characterized by a well defined semi-classical limit. For reg…
Equilibration times in closed quantum many-body systems
H. Wilming, T. R. de Oliveira, A. J. Short +1
For a quantum system to be captured by a stationary statistical ensemble, as is common in thermodynamics and statistical mechanics, it is necessary that it reaches some apparently…
A theorem about time evolution in the quantum mechanics
M. A. Rajabpour
Under broad conditions, we prove that the probability amplitudes in the quantum mechanics are either always constant in time or changing continuously in any interval of time.
Uncertainty Relations for coarse-grained measurements: an overview
Fabricio Toscano, Daniel S. Tasca, Łukasz Rudnicki +1
Uncertainty relations involving complementary observables are one of the cornerstones of quantum mechanics. Aside from their fundamental significance, they play an important role i…
Shortening time scale to reduce thermal effects in quantum transistors
Mickel A. de Ponte, Alan C. Santos
In this article, we present a quantum transistor model based on a network of coupled quantum oscillators destined to quantum information processing tasks in linear optics. To this…
Klyshko's Advanced-Wave Picture in Stimulated Parametric Down-Conversion with a Spatially Structured Pump Beam
M. F. Z. Arruda, W. C. Soares, S. P. Walborn +4
The advanced-wave picture is "... an intuitive treatment of two-photon correlation with the help of the concept of an effective field acting upon one of the two detectors and forme…
Mutually Unbiased Coarse-Grained Measurements of Two or More Phase-Space Variables
E. C. Paul, S. P. Walborn, D. S. Tasca +1
Mutual unbiasedness of the eigenstates of phase-space operators-such as position and momentum, or their standard coarse grained versions-exists only in the limiting case of infinit…
Witnessing genuine multi-photon indistinguishability
Daniel J. Brod, Ernesto F. Galvão, Niko Viggianiello +3
Bosonic interference is a fundamental physical phenomenon, and it is believed to lie at the heart of quantum computational advantage. It is thus necessary to develop practical tool…
Two-photon self-Kerr nonlinearities for quantum computing and quantum optics
Joshua Combes, Daniel J. Brod
The self-Kerr interaction is an optical nonlinearity that produces a phase shift proportional to the square of the number of photons in the field. At present, many proposals use no…
Microscopic dynamical Casimir effect
Reinaldo de Melo e Souza, François Impens, Paulo A. Maia Neto
We consider an atom in its ground state undergoing a non-relativistic oscillation in free space. The interaction with the electromagnetic quantum vacuum leads to two effects to lea…
Experimental Implementation of Generalized Transitionless Quantum Driving
Chang-Kang Hu, Jin-Ming Cui, Alan C. Santos +4
It is known that high intensity fields are usually required to implement shortcuts to adiabaticity via Transitionless Quantum Driving (TQD). Here, we show that this requirement can…
Classical simulation of photonic linear optics with lost particles
Michał Oszmaniec, Daniel J. Brod
We explore the possibility of efficient classical simulation of linear optics experiments under the effect of particle losses. Specifically, we investigate the canonical boson samp…