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Stochastic wave-function unravelling of the generalized Lindblad equation using correlated states
Umeå University, Faculty of Science and Technology, Department of Physics.
2012 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. 85, no 4, p. 045002-Article in journal (Refereed) Published
Abstract [en]

We perform a stochastic wave-function unravelling of the generalized Lindblad master equation using correlated states, a combination of the system state vectors and the environment population. The time-convolutionless projection operator method using correlated projection superoperators is applied to a two-state system, a qubit, that is coupled to an environment consisting of two energy bands which are both populated. These results are compared to the data obtained from Monte Carlo wave-function simulations based on the unravelling of the master equation. We also show a typical quantum trajectory and the average time evolution of the state vector on the Bloch sphere.

Place, publisher, year, edition, pages
2012. Vol. 85, no 4, p. 045002-
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-55679DOI: 10.1088/0031-8949/85/04/045002ISI: 000303518600003OAI: oai:DiVA.org:umu-55679DiVA, id: diva2:528856
Available from: 2012-05-28 Created: 2012-05-28 Last updated: 2018-03-15Bibliographically approved

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