June 05, 1993 - June 05, 2026

  • Date:28SundayMay 2023

    Magnetic Resonance Seminar: "Quantum sensing of out-of-equilibrium systems with magnetic resonance”

    More information
    16:00 - 17:00
    Perlman Chemical Sciences Building
    Shlomo Alexander Science Lounge
    Dr. Gonzalo A. Alvarez
    Centro Atómico Bariloche, Instituto Balseiro & Instituto de Nanociencia y Nanotecnologia
    The Center for Quantum Science and Technology
    AbstractShow full text abstract about Reliable processing of quantum information is crucial for qu...»
    Reliable processing of quantum information is crucial for quantum technologies development. Characterizing the ubiquitous out-of-equilibrium quantum systems [1-3] is essential for designing optimal control and quantum sensing strategies. However, this task is highly challenging due to the complex high-order correlations and non-stationary nature. In this talk, I will present methods to characterize the decoherence of out-of-equilibrium quantum systems [1,4-6]. Using quantum simulations with Solid-State Nuclear Magnetic Resonance, we quantify "out-of-time order correlations" (OTOCs [2-3]) to define a critical threshold in disturbances to achieve reliable control of large quantum systems [1,4-5]. Furthermore, we develop a framework for quantum sensing the dynamics of out-of-equilibrium systems [6]. The sensor manifests spectral and non-Markovian properties, providing a quantum technology to probe time-correlation properties and mitigate the decoherence effects of non-stationary environments.

    [1] G. A. Alvarez, D. Suter, R. Kaiser. Science 349, 846 (2015).
    [2] R.J. Lewis-Swan, A. Safavi-Naini, A.M. Kaufman, A.M. Rey. Nat. Rev. Phys. 1, 627 (2019).
    [3] B. Swingle. Nat. Phys. 14, 988 (2018).
    [4] F.D. Dominguez, M.C. Rodriguez, R. Kaiser, D. Suter, G.A. Alvarez. Phys. Rev. A 104, 012402 (2021).
    [5] F.D. Dominguez, G.A. Alvarez. Phys. Rev. A 104, 062406 (2021).
    [6] M. Kuffer, A. Zwick, G.A. Alvarez. PRX Quantum 3, 020321 (2022).