Preprints

    16 a 30 de 67 Preprints encontradas

  • QOI - UFG
    Semi-device-independent certification of entanglement in superdense coding
    George Moreno, Ranieri Nery, Carlos de Gois, Rafael Rabelo, Rafael Chaves
    Phys. Rev. A 103 (2021)
    ArXiv: https://arxiv.org/abs/2102.02709
  • QOI - UFG
    Monogamy of temporal correlations: Witnessing non-Markovianity beyond data processing
    Matheus Capela, Lucas C. Céleri, Kavan Modi, Rafael Chaves
    Phys. Rev. Research 2 (2021)
    ArXiv: https://arxiv.org/abs/1910.04236
  • GCQIQ - CBPF
    GIQ - UFPE
    Approximating Invertible Maps by Recovery Channels: Optimality and an Application to Non-Markovian Dynamics
    Lea Lautenbacher, Fernando de Melo, Nadja K. Bernardes
    (2021)
    ArXiv: https://arxiv.org/abs/2111.02975
  • QOI - UFG
    Satellite-Based Photonic Quantum Networks Are Small-World
    Samuraí Brito, Askery Canabarro, Daniel Cavalcanti, Rafael Chaves
    PRX Quantum 2 (2021)
    ArXiv: https://arxiv.org/abs/2012.01125
  • FIDQ - UNICAMP
    Minkowski structure for purity and entanglement of Gaussian bipartite states
    Marcos C. de Oliveira, Fernando Nicacio, Salomon S. Mizrahi
    Phys. Rev. A 88 (2021)
    ArXiv: https://arxiv.org/abs/1310.6470
  • GIQSUL - UFSC
    QBoost for regression problems: solving partial differential equations
    Caio B. D. Góes, Thiago O. Maciel, Giovani G. Pollachini, Rafael Cuenca, Juan P. L. C. Salazar, Eduardo I. Duzzioni
    (2021)
    ArXiv: https://arxiv.org/abs/2108.13346
  • QOI - UFG
    Causal inference with imperfect instrumental variables
    Nikolai Miklin, Mariami Gachechiladze, George Moreno, Rafael Chaves
    (2021)
    ArXiv: https://arxiv.org/abs/2111.03029
  • QOI - UFG
    Quantifying Causal Influences in the Presence of a Quantum Common Cause
    Mariami Gachechiladze, Nikolai Miklin, Rafael Chaves
    Phys. Rev. Lett. 125 (2021)
    ArXiv: https://arxiv.org/abs/2007.01221
  • GIQSUL - UFSC
    Genuine Multipartite Correlations in a Boundary Time Crystal
    Antônio C. Lourenço, Luis Fernando dos Prazeres, Thiago O. Maciel, Fernando Iemini, Eduardo I. Duzzioni
    (2021)
    ArXiv: https://arxiv.org/abs/2112.11510
  • QOI - UFG
    Quantum violation of local causality in urban network with hybrid photonic technologies
    Gonzalo Carvacho, Emanuele Roccia, Mauro Valeri, Francesco Basso Basset, Davide Poderini, Claudio Pardo, Emanuele Polino, Lorenzo Carosini, Michele B. Rota, Julia Neuwirth, Saimon F. Covre da Silva, Armando Rastelli, Nicolò Spagnolo, Rafael Chaves, Rinaldo Trotta, Fabio Sciarrino
    (2021)
    ArXiv: https://arxiv.org/abs/2109.06823
  • QOI - UFG
    Semidefinite Tests for Quantum Network Topologies
    Johan Åberg, Ranieri Nery, Cristhiano Duarte, Rafael Chaves
    Phys. Rev. Lett. 125 (2021)
    ArXiv: https://arxiv.org/abs/2002.05801
  • Landauer vs. Nernst: What is the True Cost of Cooling a Quantum System?
    Philip Taranto, Faraj Bakhshinezhad, Andreas Bluhm, Ralph Silva, Nicolai Friis, Maximilian P. E. Lock, Giuseppe Vitagliano, Felix C. Binder, Tiago Debarba, Emanuel Schwarzhans, Fabien Clivaz, and Marcus Huber
    (2021)
    ArXiv: https://arxiv.org/pdf/2106.05151.pdf
  • QOI - UFG
    Experimental test of quantum causal influences
    Iris Agresti, Davide Poderini, Beatrice Polacchi, Nikolai Miklin, Mariami Gachechiladze, Alessia Suprano, Emanuele Polino, Giorgio Milani, Gonzalo Carvacho, Rafael Chaves, Fabio Sciarrino
    (2021)
    ArXiv: https://arxiv.org/abs/2108.08926
  • GOIQ - UFRJ
    Mean value of the quantum potential and uncertainty relations
    F. Nicacio, F. T. Falciano
    Phys. Rev. A 101 (2020)
    ArXiv: https://arxiv.org/abs/2002.01507
    Abstract

    In this work we determine a lower bound to the mean value of the quantum potential for an arbitrary state. Furthermore, we derive a generalized uncertainty relation that is stronger than the Robertson-Schrödinger inequality and hence also stronger than the Heisenberg uncertainty principle. The mean value is then associated to the nonclassical part of the covariances of the momenta operator. This imposes a minimum bound for the nonclassical correlations of momenta and gives a physical characterization of the classical and semiclassical limits of quantum systems. The results obtained primarily for pure states are then generalized for density matrices describing mixed states.

  • GOIQ - UFRJ
    GIQ - UFPE
    Continuous monitoring of energy in quantum open systems
    G. P. Martins, N. K. Bernardes, M. F. Santos
    Phys. Rev. A 99, 032124 (2019)
    ArXiv: https://arxiv.org/abs/1811.00819
    Abstract

    We propose a method to continually monitor the energy of a quantum system. We show that by having some previous knowledge of the system’s dynamics, but not all of it, one can use the measured energy to determine many other quantities, such as the work performed on the system, the heat exchanged between the system and a thermal reservoir, the time dependence of the Hamiltonian of the system as well as the total entropy produced by its dynamics. We have also analyzed how this method is dependent on the quality factor of the measurements employed.

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