604 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR89 papers
- Universidade Federal do Rio de JaneiroBR50 papers
- Consejo Nacional de Investigaciones Científicas y TécnicasAR40 papers
- Louisiana State UniversityUS39 papers
- Universidad de MontevideoUY38 papers
- Universidad de Buenos AiresAR37 papers
- Universidad La RepúblicaCL37 papers
- Laboratoire de Physique Théorique de la Matière CondenséeFR31 papers
- Universidade Federal do Rio Grande do SulBR27 papers
- Universitat de ValènciaES25 papers
- Sorbonne UniversitéFR24 papers
- Universidad ORT UruguayUY24 papers
87 papers · 1 filter
Bell-CHSH inequality and unitary transformations in Quantum Field Theory
D. O. R. Azevedo, F. M. Guedes, M. S. Guimaraes +3
Unitary transformations are employed to enhance the violations of the Bell-CHSH inequality in relativistic Quantum Field Theory. The case of the scalar field in Minkowski spa…
Selective continuous-variable quantum process tomography
Virginia Feldman, Ariel Bendersky
Quantum process tomography is a useful tool for characterizing quantum processes. This task is essential for the development of different areas, such as quantum information process…
Selective quantum state tomography for continuous-variable systems
Virginia Feldman, Ariel Bendersky
We present a protocol that allows the estimation of any density matrix element for continuous-variable quantum states, without resorting to the complete reconstruction of the full…
Encoding High-level Quantum Programs as SZX-diagrams
Augustin Borgna, Rafael Romero
The Scalable ZX-calculus is a compact graphical language used to reason about linear maps between quantum states. These diagrams have multiple applications, but they frequently hav…
Qubit thermodynamics far from equilibrium: two perspectives about the nature of heat and work in the quantum regime
Andrés Vallejo, Alejandro Romanelli, Raúl Donangelo
Considering an entropy-based division of energy transferred into heat and work, we develop an alternative theoretical framework for the thermodynamic analysis of two-level systems.…
EPR steering in symmetrical Gaussian states
Eugenia Benech, Adriana Auyuanet, Arturo Lezama
We have explored quantum Einstein-Podolsky-Rosen steering in symmetric two-mode Gaussian states using Gaussian and non-Gaussian measurements. For Gaussian measurements, we show tha…
The Montevideo Interpretation: How the inclusion of a Quantum Gravitational Notion of Time Solves the Measurement Problem
Rodolfo Gambini, Jorge Pullin
We review the Montevideo Interpretation of quantum mechanics, which is based on the use of real clocks to describe physics, using the framework recently introduced by Hoehn, Smith…
Entanglement-Coherence and Discord-Coherence analytical relations for X states
J. D. Young, A. Auyuanet
In this work we derive analytical relations between Entanglement and Coherence as well as between Discord and Coherence, for Bell-diagonal states and for X states, evolving under t…
Entropy production in the quantum walk
Andrés Vallejo, Alejandro Romanelli, Raúl Donangelo +1
We explore the notion of generated entropy in open quantum systems. We focus on the study of the discrete-time quantum walk on the line, from the entropy production perspective. We…
Out-of-equilibrium quantum thermodynamics in the Bloch sphere: temperature and internal entropy production
Andrés Vallejo, Alejandro Romanelli, Raúl Donangelo
An explicit expression for the temperature of an open two-level quantum system is obtained as a function of local properties, under the hypothesis of weak interaction with the envi…
Initial-state-dependent thermalization in open qubits
Andrés Vallejo, Alejandro Romanelli, Raul Donangelo
We study, from a thermodynamic perspective, the equilibrium states of a qubit interacting with an arbitrary environment of dimension N>>2. We show that even in presence of memory a…
A single-world consistent interpretation of quantum mechanics from fundamental time and length uncertainties
Rodolfo Gambini, Luis Pedro García Pintos, Jorge Pullin
Within ordinary ---unitary--- quantum mechanics there exist global protocols that allow to verify that no definite event ---an outcome to which a probability can be associated--- o…
Full statistics of ideal homodyne detection using real (noisy) local oscillator
A. Auyuanet, E. Benech, H. Failache +1
We show that the full statistics of the two detectors outputs in a balanced homodyne detection setup involving a local oscillator in an ideal coherent state is experimentally acces…
Robust and stable delay interferometers with application to -dimensional time-frequency quantum key distribution
Nurul T. Islam, Andres Aragoneses, A. Lezama +2
We investigate experimentally a cascade of temperature-compensated unequal-path interferometers that can be used to measure frequency states in a high-dimensional quantum distribut…
Direct-dynamical entanglement-discord relations
Virginia Feldman, Jonas Maziero, A. Auyuanet
In this article, by considering Bell-diagonal two-qubit initial states submitted to local dynamics generated by the phase damping, bit flip, phase flip, bit-phase flip, and depolar…
Probing single-photon state tomography using phase-randomized coherent states
P. Valente, A. Lezama
Quantum processes involving single-photon states are of broad interest in particular for quantum communication. Extending to continuous values a recent proposal by Yuan et al \cite…
The sudden change phenomenon of quantum discord
Lucas C. Céleri, Jonas Maziero
Even if the parameters determining a system's state are varied smoothly, the behavior of quantum correlations alike to quantum discord, and of its classical counterparts, can be ve…
Computing partial transposes and related entanglement functions
Jonas Maziero
The partial transpose (PT) is an important function for entanglement testing and quantification and also for the study of geometrical aspects of the quantum state space. In this ar…
Transient temperature and mixing times of quantum walks on cycles
Nicolás Díaz, Raul Donangelo, Renato Portugal +1
The definition of entanglement temperature for the quantum walk on the line is extended to -cycles, which are more amenable to a physical implementation. We show that, for these…
Non-Markovianity and memory of the initial state
Margarida Hinarejos, Mari-Carmen Bañuls, Armando Pérez +1
We explore in a rigorous manner the intuitive connection between the non-Markovianity of the evolution of an open quantum system and the performance of the system as a quantum memo…
Environment-induced quantum coherence spreading of a qubit
Mauro B. Pozzobom, Jonas Maziero
We make a thorough study of the spreading of quantum coherence (QC), as quantified by the -norm QC, when a qubit (a two-level quantum system) is subjected to noise quantum c…
Computing coherence vectors and correlation matrices, with application to quantum discord quantification
Jonas Maziero
Coherence vectors and correlation matrices are important functions frequently used in physics. The numerical calculation of these functions directly from their definitions, which i…
Electric quantum walks in two dimensions
Luis A. Bru, Margarida Hinarejos, Fernando Silva +2
We study electric quantum walks in two dimensions considering Grover, Alternate, Hadamard, and DFT quantum walks. In the Grover walk the behaviour under an electric field is easy t…
Computing partial traces and reduced density matrices
Jonas Maziero
Taking partial traces for computing reduced density matrices, or related functions, is a ubiquitous procedure in the quantum mechanics of composite systems. In this article, we pre…