Matches in SemOpenAlex for { <https://semopenalex.org/work/W2953353906> ?p ?o ?g. }
Showing items 1 to 74 of
74
with 100 items per page.
- W2953353906 abstract "We introduce a measure of quantum correlations in the $N$-qubit quantum system which is invariant with respect to the $SU(2^N)$ group of transformations of this system. This measure is a modification of the quantum discord introduced earlier and is referred to as the unitary or $SU(2^N)$-invariant discord. Since the evolution of a quantum system is equivalent to the proper unitary transformation, the introduced measure is an integral of motion and is completely defined by eigenvalues of the density matrix. As far as the calculation of the unitary invariant discord is rather complicated computational problem, we propose its modification which may be found in a simpler way. The case N=2 is considered in details. In particular, it is shown that the modified SU(4)-invariant discord reaches the maximum value for a pure state. {A geometric measure of the unitary invariant discord of an $N$-qubit state is introduced and a simple formula for this measure is derived, which allows one to consider this measure as a witness of quantum correlations.} The relation of the unitary invariant discord with the quantum state transfer along the spin chain is considered. We also compare the modified SU(4)-invariant discord with the geometric measure of SU(4)-invariant discord of the two-qubit systems in the thermal equilibrium states governed by the different Hamiltonians." @default.
- W2953353906 created "2019-06-27" @default.
- W2953353906 creator A5010155479 @default.
- W2953353906 date "2011-07-24" @default.
- W2953353906 modified "2023-09-25" @default.
- W2953353906 title "Unitary invariant discord as a measure of bipartite quantum correlations in an $N$-qubit quantum system" @default.
- W2953353906 cites W1599964317 @default.
- W2953353906 cites W2019917829 @default.
- W2953353906 doi "https://doi.org/10.48550/arxiv.1107.4743" @default.
- W2953353906 hasPublicationYear "2011" @default.
- W2953353906 type Work @default.
- W2953353906 sameAs 2953353906 @default.
- W2953353906 citedByCount "1" @default.
- W2953353906 countsByYear W29533539062012 @default.
- W2953353906 crossrefType "posted-content" @default.
- W2953353906 hasAuthorship W2953353906A5010155479 @default.
- W2953353906 hasBestOaLocation W29533539061 @default.
- W2953353906 hasConcept C115667082 @default.
- W2953353906 hasConcept C121040770 @default.
- W2953353906 hasConcept C121332964 @default.
- W2953353906 hasConcept C122044880 @default.
- W2953353906 hasConcept C137019171 @default.
- W2953353906 hasConcept C139356082 @default.
- W2953353906 hasConcept C17744445 @default.
- W2953353906 hasConcept C179371143 @default.
- W2953353906 hasConcept C190470478 @default.
- W2953353906 hasConcept C199539241 @default.
- W2953353906 hasConcept C202444582 @default.
- W2953353906 hasConcept C203087015 @default.
- W2953353906 hasConcept C2780009758 @default.
- W2953353906 hasConcept C33923547 @default.
- W2953353906 hasConcept C37914503 @default.
- W2953353906 hasConcept C41008148 @default.
- W2953353906 hasConcept C62520636 @default.
- W2953353906 hasConcept C67820243 @default.
- W2953353906 hasConcept C77088390 @default.
- W2953353906 hasConcept C84114770 @default.
- W2953353906 hasConceptScore W2953353906C115667082 @default.
- W2953353906 hasConceptScore W2953353906C121040770 @default.
- W2953353906 hasConceptScore W2953353906C121332964 @default.
- W2953353906 hasConceptScore W2953353906C122044880 @default.
- W2953353906 hasConceptScore W2953353906C137019171 @default.
- W2953353906 hasConceptScore W2953353906C139356082 @default.
- W2953353906 hasConceptScore W2953353906C17744445 @default.
- W2953353906 hasConceptScore W2953353906C179371143 @default.
- W2953353906 hasConceptScore W2953353906C190470478 @default.
- W2953353906 hasConceptScore W2953353906C199539241 @default.
- W2953353906 hasConceptScore W2953353906C202444582 @default.
- W2953353906 hasConceptScore W2953353906C203087015 @default.
- W2953353906 hasConceptScore W2953353906C2780009758 @default.
- W2953353906 hasConceptScore W2953353906C33923547 @default.
- W2953353906 hasConceptScore W2953353906C37914503 @default.
- W2953353906 hasConceptScore W2953353906C41008148 @default.
- W2953353906 hasConceptScore W2953353906C62520636 @default.
- W2953353906 hasConceptScore W2953353906C67820243 @default.
- W2953353906 hasConceptScore W2953353906C77088390 @default.
- W2953353906 hasConceptScore W2953353906C84114770 @default.
- W2953353906 hasLocation W29533539061 @default.
- W2953353906 hasOpenAccess W2953353906 @default.
- W2953353906 hasPrimaryLocation W29533539061 @default.
- W2953353906 hasRelatedWork W1687347840 @default.
- W2953353906 hasRelatedWork W1886491312 @default.
- W2953353906 hasRelatedWork W2031443551 @default.
- W2953353906 hasRelatedWork W2037424655 @default.
- W2953353906 hasRelatedWork W2079995539 @default.
- W2953353906 hasRelatedWork W2271250430 @default.
- W2953353906 hasRelatedWork W2952297306 @default.
- W2953353906 hasRelatedWork W3099706447 @default.
- W2953353906 hasRelatedWork W3104708790 @default.
- W2953353906 hasRelatedWork W3164381866 @default.
- W2953353906 isParatext "false" @default.
- W2953353906 isRetracted "false" @default.
- W2953353906 magId "2953353906" @default.
- W2953353906 workType "article" @default.