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- University of GdańskPL161 papers
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14 papers · 2 filters
Experimentally feasible semi-device-independent certification of outcome POVMs
Piotr Mironowicz, Marcin Pawłowski
In this paper we construct a semi-device-independent protocol able to certify the presence of the generalized measurements. We show robustness of the protocol and conclude that it…
Decoherence of spin registers revisited
Jan Tuziemski, Aniello Lampo, Maciej Lewenstein +1
We revisit decoherence process of a qubit register interacting with a thermal bosonic bath. We generalize the previous studies by considering not only the register's behavior but a…
Complete extension: the non-signaling analog of quantum purification
Marek Winczewski, Tamoghna Das, John H. Selby +5
Deriving quantum mechanics from information-theoretic postulates is a recent research direction taken, in part, with the view of finding a beyond-quantum theory; once the postulate…
Swapping space for time: An alternative to time-domain interferometry
Marek Czachor
Young's double-slit experiment requires two waves produced simultaneously at two different points in space. In quantum mechanics the waves correspond to a single quantum object, ev…
Second-order Stark effect and polarizability of a relativistic two-dimensional hydrogen-like atom in the ground state
Radosław Szmytkowski
The second-order Stark effect for a planar Dirac one-electron atom in the ground state is analyzed within the framework of the Rayleigh-Schrödinger perturbation theory, with the us…
Relativistic two-dimensional hydrogen-like atom in a weak magnetic field
Radosław Szmytkowski
A two-dimensional (2D) hydrogen-like atom with a relativistic Dirac electron, placed in a weak, static, uniform magnetic field perpendicular to the atomic plane, is considered. Clo…