9 citations · 31 across the 8 of their papers we have counts for
8 papers · 1 filter
Dynamical decoupling and quantum error correction with SU(d) symmetries
Colin Read, Eduardo Serrano-Ensástiga, John Martin
Dynamical decoupling is a long-established and effective way to suppress unwanted interactions in qubit systems, enabling advances in fields ranging from quantum metrology to quant…
Universality in fidelity-based quantum metrology
Luis Aragón-Muñoz, Chryssomalis Chryssomalakos, Ana Gabriela Flores-Delgado +2
We consider the problem of identifying the quantum spin states that are the optimal sensors of a given transformation, averaged over all possible orientations of the spin system. O…
Multiqubit monogamy relations beyond shadow inequalities
Eduardo Serrano-Ensástiga, Olivier Giraud, John Martin
Multipartite quantum systems are subject to monogamy relations that impose fundamental constraints on the distribution of quantum correlations between subsystems. These constraints…
Dynamical decoupling of interacting spins through group factorization
Colin Read, Eduardo Serrano-Ensástiga, John Martin
Dynamical decoupling (DD) is a well-known open-loop protocol for suppressing unwanted interactions in a quantum system, thereby drastically extending the coherence time of useful q…
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…
Platonic dynamical decoupling sequences for interacting spin systems
Colin Read, Eduardo Serrano-Ensástiga, John Martin
In the NISQ era, where quantum information processing is hindered by the decoherence and dissipation of elementary quantum systems, developing new protocols to extend the lifetime…
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,…
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…