Essays about: "von Neumann entropy"

Found 3 essays containing the words von Neumann entropy.

  1. 1. Dynamics for the special class of quantum master equations

    University essay from Linnéuniversitetet/Institutionen för matematik (MA)

    Author : Locatelli Pietro; [2022]
    Keywords : superoperators; density matrices; von Neumann entropy; camel-like entropy; steady states; open quantum systems; dynamical semigroups; decoherence free subspaces;

    Abstract : The paper is an analysis of a special class of the master equations such that the Dissipation superoperator is L(ρ) = [M, [M, ρ]], where M is an hermitian andunitary operator and ρ a density matrix. It mainly investigates the dynamics ofρ and its properties such as boundness of the operators of the master equation,the eigenvalues of these operators, the purity of the states, the steady states. READ MORE

  3. 2. Entanglement in nano systems

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Matematisk fysik

    Author : Sofia Olsson; [2014]
    Keywords : entanglement; nano systems; spin; correlation; quantum dots; von Neumann; pure system; Physics and Astronomy;

    Abstract : This bachelor thesis on entanglement in nano systems includes a short presen-tation of the history of quantum mechanics before entanglement takes the spot light. A definition of entanglement will be stated as well as a prescription to quantify it for a pure system. READ MORE

  4. 3. Ordering of Entangled States for Different Entanglement Measures

    University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik

    Author : Jennie Sköld; [2014]
    Keywords : Quantum entanglement; entanglement measures; pure state; mixed state; density matrix; von Neumann entropy; entanglement cost; entanglement distillation; entanglement of formation; relative entropy of entanglement;

    Abstract : Quantum entanglement is a phenomenon which has shown great potential use in modern technical implementations, but there is still much development needed in the field. One major problem is how to measure the amount of entanglement present in a given entangled state. READ MORE