Información del autor
Autor Luis Aina, Alfredo |
Documentos disponibles escritos por este autor (102)
![](./images/expand_all.gif)
![](./images/collapse_all.gif)
![Selecciones disponibles](./images/orderby_az.gif)
![]()
texto impreso
We show within a very simple framework that different measures of fluctuations lead to uncertainty relations resulting in contradictory conclusions. More specifically we focus on Tsallis and Renyi entropic uncertainty relations and we get that t[...]![]()
texto impreso
Ensemble approach to coherence between two scalar harmonic light vibrations and the phase difference
We develop an approach to coherence between two scalar harmonic light vibrations derived from the ensemble interpretation of statistical optics. Coherence is presented as a statistical variable itself that turns out to be the phase difference be[...]![]()
texto impreso
We compute Renyi entropies for the statistics of a noisy simultaneous observation of two complementary observables in two-dimensional quantum systems. The relative amount of uncertainty between two states depends on the uncertainty measure used.[...]![]()
texto impreso
We demonstrate that the superpositions of macroscopically distinct coherent states are maximally entangled states. Among other possible applications of this result, in this paper we show that the experimental arrangements generating superpositio[...]![]()
texto impreso
Martínez Matos, Óscar ; Alieva Krasheninnikova, Tatiana ; Canabal Boutureira, Héctor ; Navarrete Fernández, María de la Cruz ; Gonzalo Fonrodona, Isabel ; Herrera Fernández, José María ; Irigoyen Irigoyen, Maite ; Luis Aina, Alfredo ; Piquero Sanz, Gemma ; Rodrigo Martín Romo, José Augusto ; Sánchez Brea, Luis Miguel ; Sánchez Martín, José Antonio ; Serna Galán, Julio ; Tercero Gómez, José Luis ; Torcal Milla, Francisco José ; Vilas Prieto, José Luis ; Weigand Talavera, Rosa | 2015Se propone un cambio en la metodología docente de la asignatura Laboratorio de Física III del Grado en Física, para hacerla más dinámica y potenciar la participación e iniciativas de los estudiantes, adecuándola al espíritu de Bolonia![]()
texto impreso
We show that metrological resolution in the detection of small phase shifts provides a suitable generalization of the degrees of coherence and polarization. Resolution is estimated via Fisher information. Besides the standard two-beam Gaussian c[...]![]()
texto impreso
We propose a simple method to generate in practice the most general two-mode states with maximum entanglement. The method is based on energy-conserving dispersive interactions that can be easily implemented in different context such as quantum o[...]![]()
texto impreso
We analyze the quantum limit to the sensitivity of the detection of small displacements. We focus on the case of free particles and harmonic oscillators as the systems experiencing the displacement. We show that the minimum displacement detectab[...]![]()
texto impreso
We show that a single experiment can test simultaneously and independently both the nonclassicality of states and of measurements by the violation or fulfillment of classical bounds on the statistics. Nonideal measurements affected by imperfecti[...]![]()
texto impreso
We elaborate on a Hilbert-Schmidt distance measure assessing the intrinsic metrological accuracy in the detection of signals imprinted on quantum probe states by signal-dependent transformations. For small signals this leads to a probe-transform[...]![]()
texto impreso
We estimate the quantum state of a system between two measurements via a maximum likelihood strategy. This incorporates all the information provided by preselection and postselection in a legitimate quantum state. Moreover, it allows to include [...]![]()
texto impreso
We study the performance of linear and nonlinear optical schemes for the detection of weak signals for two classes of probe states. These are quadrature coherent squeezed states and the minimum uncertainty states of the generator of the transfor[...]![]()
texto impreso
A multimode quantum analysis of noise reduction in interferometric measurements is presented. A unitary transformation relating the output modes with the input ones for a Michelson interferometer with moving mirrors is given. The evaluation of t[...]![]()
texto impreso
Derivation and experimental violation of Bell-like inequalities involve the measurement of incompatible observables. Simple complementarity forbids the existence of such joint probability distribution. Moreover, the measurement of incompatible o[...]![]()
texto impreso
Nonclassicality cannot be a single-observable property, since the statistics of any quantum observable is compatible with classical physics. We develop a general procedure to reveal nonclassical behavior of light states from the joint statistics[...]