Search results for "Óptica Cuántica"
showing 3 items of 3 documents
Contributions to three problems relevant to cavity quantum optics
2015
En la primera parte, el tema de estudio son las fluctuaciones cuánticas en el Oscilador Óptico Paramétrico (OPO) de tipo II. En esencia, los OPOs son cavidades ópticas que contienen un cristal con una no linealidad de segundo orden. Cuando bombeamos con un laser de frecuencia 2w0, el OPO es capaz de generar frecuencias ws (señal) y wi (vago) de tal forma que ws+wi=2w0. Que el dispositivo sea de Tipo II hace referencia a que estos haces tienen polarizaciones ortogonales. En una descripción clásica, la generación de frecuencias requiere que el OPO sea bombeado por encima de un cierto valor umbral; sin embargo, cuánticamente las parejas de fotones señal-vago pueden ser generadas incluso por de…
Twisted-Light-Ion Interaction: The Role of Longitudinal Fields.
2017
The propagation of light beams is well described using the paraxial approximation, where field components along the propagation direction are usually neglected. For strongly inhomogeneous or shaped light fields, however, this approximation may fail, leading to intriguing variations of the light-matter interaction. This is the case of twisted light having opposite orbital and spin angular momenta. We compare experimental data for the excitation of a quadrupole transition in a single trapped $^{40}$Ca$^+$ ion by Schmiegelow et al, Nat.\ Comm.\ 7, 12998 (2016), with a complete model where longitudinal components of the electric field are taken into account. Our model matches the experimental d…
Innovative Approaches for Organizing an Inclusive Optics and Photonics Conference in Virtual Format
2023
The COVID pandemic is forcing the renewal of scientific conferences, offering opportunities to introduce technological and inclusive developments. Our analysis focuses on the implementation of inclusive practices for female and early-career researchers in a virtual scientific conference. This organization approach was applied in the XIII Spanish Optical Meeting (RNO2021), which was also characterized by avatars interacting in an online metaverse. The effectiveness of inclusive policies and novel technological tools was evaluated using the participation data and a post-conference survey. Our study reveals the high impact of inclusive actions and a strong interest in the scientific community …