44 citations · 130 across the 5 of their papers we have counts for
6 papers
Characterization of a quasi-static environment with a qubit
Fattah Sakuldee, Łukasz Cywiński
We consider a qubit initalized in a superposition of its pointer states, exposed to pure dephasing due to coupling to a quasi-static environment, and subjected to a sequence of sin…
Decoherence-assisted detection of entanglement of two qubit states
Jan Krzywda, Piotr Szańkowski, Jan Chwedeńczuk +1
We show that the decoherence, which in the long run destroys quantum features of a system, can be used to reveal the entanglement in a two-qubit system. To this end, we consider a…
Equivalence of qubit-environment entanglement and discord generation via pure dephasing interactions and the consequences thereof
Katarzyna Roszak, Łukasz Cywiński
We find that when a qubit initialized in a pure state experiences pure dephasing due to interaction with an environment, separable qubit-environment states generated during the evo…
Localization of a magnetic moment using a two-qubit probe
Jan Krzywda, Łukasz Cywiński, Piotr Szańkowski
A nanomagnet precessing in an external magnetic field can be treated as a source of narrow-bandwidth magnetic noise, that leaves characteristic fingerprints in decoherence of a nea…
In-plane radiative recombination channel of a dark exciton in self-assembled quantum dots
Tomasz Smoleński, Tomasz Kazimierczuk, Mateusz Goryca +6
We demonstrate evidence for a radiative recombination channel of dark excitons in self-assembled quantum dots. This channel is due to a light hole admixture in the excitonic ground…
Magnetic polaron formation and exciton spin relaxation in single CdMnTe quantum dots
Łukasz Kłopotowski, Łukasz Cywiński, Piotr Wojnar +8
We study the formation dynamics of a spontaneous ferromagnetic order in single self-assembled CdMnTe quantum dots. By measuring time-resolved photoluminescence, we determine the fo…