dr hab. inż. Maciej Demianowicz
Employment
- Associate professor at Instytut Fizyki i Informatyki Stosowanej
Research fields
Social media
Contact
- maciej.demianowicz@pg.edu.pl
Associate professor
- Workplace
-
Gmach Główny
room 033 open in new tab - Phone
- +48 58 347 12 77
Publication showcase
-
Universal construction of genuinely entangled subspaces of any size
We put forward a simple construction of genuinely entangled subspaces – subspaces supporting only genuinely multipartite entangled states – of any permissible dimensionality for any number of parties and local dimensions. The method uses nonorthogonal product bases, which are built from totally nonsingular matrices with a certain structure. We give an explicit basis for the constructed subspaces. An immediate consequence of our...
-
Negative result about the construction of genuinely entangled subspaces from unextendible product bases
Unextendible product bases (UPBs) provide a versatile tool with various applications across different areas of quantum information theory. Their comprehensive characterization is thus of great importance and has been a subject of vital interest for over two decades now. An open question asks about the existence of UPBs, which are genuinely unextendible, i.e., they are not extendible even with biproduct vectors. In other words,...
-
Simple sufficient condition for subspace to be completely or genuinely entangled
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 criterion is a bound on the minimal entanglement of a subspace in terms of entanglement of vectors spanning that subspace expressed for geometrical measures of entanglement. The criterion is applicable to both completely and genuinely entangled subspaces. We...
seen 2224 times