Home

Przeglądanie wg autora "Jurkowski, Jacek"

Repozytorium Uniwersytetu Mikołaja Kopernika

Przeglądanie wg autora "Jurkowski, Jacek"

Sortuj wg: Porządek: Wyników:

  • Estimating Concurrence via Entanglement Witnesses 
    Jurkowski, Jacek; Chruściński, Dariusz (2010-02-18)
    We show that each entanglement witness detecting given bipartite entangled state provides an estimation of its concurrence. We illustrate our result with several well known examples of entanglement witnesses and compare ...
  • Memory in a nonlocally damped oscillator 
    Chruściński, Dariusz; Jurkowski, Jacek (2007-12-07)
    We analyze the new equation of motion for the damped oscillator. It differs from the standard one by a damping term which is nonlocal in time and hence it gives rise to a system with memory. Both classical and quantum ...
  • Quantum damped oscillator I: dissipation and resonances 
    Chruściński, Dariusz; Jurkowski, Jacek (2005-06-01)
    Quantization of a damped harmonic oscillator leads to so called Bateman's dual system. The corresponding Bateman's Hamiltonian, being a self-adjoint operator, displays the discrete family of complex eigenvalues. We show ...
  • Quantum states with strong positive partial transpose 
    Chruściński, Dariusz; Jurkowski, Jacek; Kossakowski, Andrzej (2007-10-10)
    We construct a large class of bipartite M x N quantum states which defines a proper subset of states with positive partial transposes (PPT). Any state from this class is PPT but the positivity of its partial transposition ...