22 citations · 38 across the 5 of their papers we have counts for
7 papers
Engineering continuous and discrete variable quantum vortex states by nonlocal photon subtraction in a reconfigurable photonic chip
David Barral, Jesús Liñares, Daniel Balado
We study the production of entangled two- and N-mode quantum states of light in optical waveguides. To this end, we propose a quantum photonic circuit that produces a reconfigurabl…
Detection of two-mode spatial quantum states of light by electro-optic integrated directional couplers
David Barral, Mark G. Thompson, Jesús Liñares
We study both manipulation and detection of two-mode spatial quantum states of light by means of a reconfigurable integrated device built in an electro-optical material in a Kolgel…
Coupling quasi-phase matching: entanglement buildup in nonlinear waveguide arrays
David Barral, Nadia Belabas, Kamel Bencheikh +1
Wavevector quasi-phase matching was devised in the 1960s as a way to boost nonlinear interactions with efficient quantum noise squeezing as one outstanding outcome. In the era of q…
Zero supermode-based multipartite entanglement in nonlinear waveguides arrays
David Barral, Kamel Bencheikh, Nadia Belabas +1
We show that arrays of nonlinear waveguides in the second harmonic generation regime are a promising source of continuous-variable entanglement. We indeed demonstrate ana…
Symmetry-based analytical solutions to the χ^{(2)} nonlinear directional coupler
David Barral, Kamel Bencheikh, Peter J. Olver +2
In general the ubiquitous χ^{(2)} nonlinear directional coupler, where nonlinearity and evanescent coupling are intertwined, is nonintegrable. We rigorously demonstrate that matchi…
Comment on "Generating a perfect quantum optical vortex"
David Barral, Jesús Liñares
In a recent article, Banerji et al. introduced a novel quantum state of light, coined as the perfect quantum optical vortex state [Phys. Rev. A 94, 053838 (2016)] due to its mathem…