97 citations · 307 across the 20 of their papers we have counts for
20 papers
A noisy channel less entangled than a pure can improve teleportation
Luis Roa, M. Loreto Ladrón de Guevara, Matias Soto-Moscoso +1
In our work we consider the following problem in the context of teleportation: an unknown pure state have to be teleported and there are two laboratories which can perform the task…
Entanglement thresholds for displaying the quantum nature of teleportation
Luis Roa, Robinson Gómez, Ariana Muñoz +1
A protocol for transferring an unknown single qubit state has quantum features when the average fidelity of the outcomes is greater than 2/3. We use the probabilistic and unambiguo…
Analytical solutions and criteria for the quantum discord of two-qubit X-states
A. Maldonado-Trapp, Anzi Hu, Luis Roa
Except for a few special states, computing quantum discord remains a complicated optimization process. In this paper we present analytical solutions for computing quantum discord o…
Entanglement-swapping for X-states demands threshold values
Ariana Muñoz, Gesa Grüning, Luis Roa
The basic entanglement-swapping scheme can be seen as a process which allows to redistribute the Bell states' properties between different pairs of a four qubits system. Achieving…
Unbiased non-orthogonal bases for tomographic reconstruction
Isabel Sainz, Luis Roa, Andrei B. Klimov
We have developed a general method for constructing a set of non-orthogonal bases with equal separations between all different basis' states in prime dimensions.It results that the…
Entanglement of formation for a class of -dimensional systems
F. Lastra, C. E. López, L. Roa +1
Currently the entanglement of formation can be calculated analytically for mixed states in a -dimensional Hilbert space. For states in higher dimensional Hilbert space…