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8 papers · 2 filters
Entropic uncertainty relations for mutually unbiased periodic coarse-grained observables resemble their discrete counterparts
Łukasz Rudnicki, Stephen P. Walborn
One of the most important and useful entropic uncertainty relations concerns a dimensional system and two mutually unbiased measurements. In such a setting, the sum of two info…
Quantum speed limit helps interpret geometric measure of entanglement
Łukasz Rudnicki
Using the approach offered by quantum speed limit, we show that geometric measure of multipartite entanglement for pure states [Phys. Rev. A 68, 042307(2003)] can be interpreted as…
Confident entanglement detection via separable numerical range
Timo Simnacher, Jakub Czartowski, Konrad Szymański +1
We investigate the joint (separable) numerical range of multiple measurements, i.e., the regions of expectation values accessible with (separable) quantum states for given observab…
Thermodynamics of Reduced State of the Field
Stefano Cusumano, Łukasz Rudnicki
Recent years have seen the flourishing of research devoted to quantum effects on mesoscopic and macroscopic scales. In this context, in Entropy 2019, 21, 705, a formalism aiming at…
Simple sufficient condition for subspace to be completely or genuinely entangled
Maciej Demianowicz, Grzegorz Rajchel-Mieldzioć, Remigiusz Augusiak
We introduce a simple sufficient criterion, which allows one to tell whether a subspace of a bipartite or multipartite Hilbert space is entangled. The main ingredient of our criter…
Entanglement in highly symmetric multipartite quantum states
Adam Burchardt, Jakub Czartowski, Karol Życzkowski
We present a construction of genuinely entangled multipartite quantum states based on the group theory. Analyzed states resemble the Dicke states, whereas the interactions occur on…