Barral Raña, DavidBalado Souto, DanielLiñares Beiras, Jesús2018-10-182018-10-182017-01-03Barral, D., Balado, D., Liñares, J. (2017). Generation and detection of continuous variable quantum vortex states via compact photonic devices. "Photonics", vol. 4, n.22304-6732http://hdl.handle.net/10347/17500A quantum photonic circuit with the ability to produce continuous variable quantum vortex states is proposed. This device produces two single-mode squeezed states which go through a Mach-Zehnder interferometer where photons are subtracted by means of weakly coupled directional couplers towards ancillary waveguides. The detection of a number of photons in these modes heralds the production of a quantum vortex. Likewise, a measurement system of the order and handedness of quantum vortices is introduced and the performance of both devices is analyzed in a realistic scenario by means of theWigner function. These devices open the possibility of using the quantum vortices as carriers of quantum informationeng(c) David Barral, Daniel Balado e Jesús Liñares, 2017. Publicado en Photonics baixo una licenza Creative Commons Reconocimiento 4.0 (http://creativecommons.org/licenses/by/4.0/)http://creativecommons.org/licenses/by/4.0/Quantum information processingContinuous variablesIntegrated opticsjournal article10.3390/photonics4010002open access