K
Katarzyna Roszak
Researcher at Wrocław University of Technology
Publications - 60
Citations - 803
Katarzyna Roszak is an academic researcher from Wrocław University of Technology. The author has contributed to research in topics: Quantum entanglement & Qubit. The author has an hindex of 15, co-authored 55 publications receiving 629 citations. Previous affiliations of Katarzyna Roszak include Charles University in Prague & Academy of Sciences of the Czech Republic.
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Complete disentanglement by partial pure dephasing
TL;DR: In this article, the effect of pure dephasing on the entanglement of a pair of two-level subsystems (qubits) was studied, and it was shown that partial de-phasing induced by a super-Ohmic reservoir, corresponding to well-established properties of confined charge states and phonons, may lead to complete disentanglement.
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Phonon-induced decoherence for a quantum-dot spin qubit operated by Raman passage
TL;DR: In this article, the authors studied single-qubit gates performed via stimulated Raman adiabatic passage on a spin qubit implemented in a quantum-dot system in the presence of phonons.
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Characterization and measurement of qubit-environment-entanglement generation during pure dephasing
Katarzyna Roszak,Łukasz Cywiński +1 more
TL;DR: In this article, the authors consider the coupling of a qubit in a pure state to an environment in an arbitrary state, and characterize the possibility of qubit-environment entanglement generation during the evolution of the joint system, that leads to pure dephasing of the qubit.
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Exciton spin decay in quantum dots to bright and dark states
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A scheme for direct detection of qubit–environment entanglement generated during qubit pure dephasing
TL;DR: A scheme for the detection of qubit-environment entanglement at time $\tau$ which requires only operations and measurements on the qubit, all within reach of current experimental state-of-the-art, as long as the initial qubit state is pure.