Blar i TKD - Institutt for informasjonsteknologi på emneord "Open quantum systems"

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    • Absorbers as detectors for unbound quantum systems 

      Selstø, Sølve (Physical Review A (PRA);Vol. 106, Iss. 4, Peer reviewed; Journal article, 2022-10-19)
      Complex absorbing potentials are frequently employed in quantum calculations. One of the advantages that such absorbers provide is the ability to attenuate outgoing waves in simulations of unbound systems, thus allowing ...

    • Photon waiting-time distributions: A keyhole into dissipative quantum chaos 

      Yusipov, Igor; Vershinina, Olga; Denysov, Sergiy; Ivanchenko, Mikhail (Chaos;Volume 30, Issue 2, Journal article; Peer reviewed, 2020-01-14)
      Open quantum systems can exhibit complex states, for which classification and quantification are still not well resolved. The Kerr-nonlinear cavity, periodically modulated in time by coherent pumping of the intracavity ...

    • Propagating large open quantum systems towards their asymptotic states: cluster implementation of the time-evolving block decimation scheme 

      Volokitin, V; Vakulchyk, Ihor; Kozinov, E; Liniov, A; Meyerov, I; Ivanchenko, Mikhail; Laptyeva, T; Denysov, Sergiy (Journal of Physics: Conference Series;Volume 1392, Journal article; Peer reviewed, 2019)
      Many-body quantum systems are subjected to the Curse of Dimensionality: The dimension of the Hilbert space H, where these systems live in, grows exponentially with number of their components. However, with some systems, ...

    • Quantum Lyapunov exponents beyond continuous measurements 

      Yusipov, Igor; Vershinina, Olga; Denysov, Sergiy; Kuznetsov, Sergey; Ivanchenko, Mikhail (Chaos;Volume 29, Issue 6, Journal article; Peer reviewed, 2019-10-28)
      Quantum systems, when interacting with their environments, may exhibit non-equilibrium states that are tempting to be interpreted as quantum analogs of chaotic attractors. However, different from the Hamiltonian case, the ...

    • Transforming Lindblad Equations Into Systems of Real-Valued Linear Equations: Performance Optimization and Parallelization of an Algorithm 

      Meyerov, I; Kozinov, E; Liniov, A; Volokitin, V; Yusipov, Igor; Ivanchenko, Mikhail; Denysov, Sergiy (Entropy;Volume 22, Issue 10, Journal article; Peer reviewed, 2020-10-06)
      With their constantly increasing peak performance and memory capacity, modern supercomputers offer new perspectives on numerical studies of open many-body quantum systems. These systems are often modeled by using Markovian ...

    • Universal spectra of random Lindblad operators 

      Denysov, Sergiy; Laptyeva, T; Tarnowski, Wojciech; Chruściński, Dariusz; Życzkowski, Karol (Physical Review Letters;Volume 123, Issue 14 4 October 2019, Journal article; Peer reviewed, 2019)
      To understand the typical dynamics of an open quantum system in continuous time, we introduce an ensemble of random Lindblad operators, which generate completely positive Markovian evolution in the space of the density ...