13 citations · 49 across the 10 of their papers we have counts for
8 papers · 1 filter
Entangling power of symmetric multiqubit systems: a geometrical approach
Eduardo Serrano-Ensástiga, Diego Morachis Galindo, Jesús A. Maytorena +1
Unitary gates with high entangling capabilities are relevant for several quantum-enhanced technologies. For symmetric multiqubit systems, such as spin states or bosonic systems, th…
Nonequivalence between absolute separability and positive partial transposition in the symmetric subspace
Jonathan Louvet, Eduardo Serrano-Ensástiga, Thierry Bastin +1
The equivalence between absolutely separable states and absolutely positive partial transposed (PPT) states in general remains an open problem in quantum entanglement theory. In th…
Quantum metrology of rotations with mixed spin states
Eduardo Serrano-Ensástiga, Chryssomalis Chryssomalakos, John Martin
The efficiency of a quantum metrology protocol can be significantly diminished by the interaction of the system with its environment, leading to a loss of purity and, as a result,…
A numerical study of the Bose-Einstein condensates in a double-well trap using finite differences
D. J. Nader, E. Serrano-Ensástiga
Bose-Einstein condensates in a double-well potential contain the essential ingredients to study many-body systems within a rich classical phase-space that includes an unstable poin…
Absolute separability witnesses for symmetric multiqubit states
Eduardo Serrano-Ensástiga, Jérôme Denis, John Martin
The persistent separability of certain quantum states, known as symmetric absolutely separable (SAS), under symmetry-preserving global unitary transformations is of key significanc…
Toponomic Quantum Computation
C. Chryssomalakos, L. Hanotel, E. Guzmán-González +1
Holonomic quantum computation makes use of non-abelian geometric phases, associated to the evolution of a subspace of quantum states, to encode logical gates. We identify a special…
Symmetric Multiqudit States: Stars, Entanglement, Rotosensors
Chryssomalis Chryssomalakos, Louis Hanotel, Edgar Guzmán-González +3
A constellation of Majorana stars represents an arbitrary pure quantum state of dimension or a permutation-symmetric state of a system consisting of qubits. We gene…
When geometric phases turn topological
Pedro Aguilar, Chryssomalis Chryssomalakos, Edgar Guzmán-González +2
Geometric phases, accumulated when a quantum system traces a cycle in quantum state space, do not depend on the parametrization of the cyclic path, but do depend on the path itself…