Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Beduini, Federica A."'
Publikováno v:
Remote Sensing, 14(19), 4976
The analysis of the colour of artificial lights at night has an impact on diverse fields, but current data sources have either limited resolution or scarce availability of images for a specific region. In this work, we propose crowdsourced photos of
Externí odkaz:
http://arxiv.org/abs/2210.11140
Autor:
Beduini, Federica A.
Publikováno v:
TDX (Tesis Doctorals en Xarxa).
This thesis analyses the effects of two-photon interference in a polarisation squeezed state under two different points of view: on one hand, it presents a new method to obtain the temporal wavefunction of a state of two photons; on the other hand, i
Externí odkaz:
http://hdl.handle.net/10803/336093
Autor:
Beduini, Federica A., Zielinska, Joanna A., Lucivero, Vito G., Astiz, Yannick A. de Icaza, Mitchell, Morgan W.
Publikováno v:
Phys. Rev. Lett. 114, 120402 (2015)
Explaining how microscopic entities collectively produce macroscopic phenomena is a fundamental goal of many-body physics. Theory predicts that large-scale entanglement is responsible for exotic macroscopic phenomena, but observation of entangled par
Externí odkaz:
http://arxiv.org/abs/1410.7079
Autor:
Beduini, Federica A., Zielińska, Joanna A., Lucivero, Vito G., Astiz, Yannick A. de Icaza, Mitchell, Morgan W.
Publikováno v:
Phys. Rev. Lett. 113, 183602 (2014)
Interference between an unknown two-photon state (a "biphoton") and the two-photon component of a reference state gives a phase-sensitive arrival-time distribution containing full information about the biphoton temporal wave function. Using a coheren
Externí odkaz:
http://arxiv.org/abs/1407.7683
Publikováno v:
Opt. Express 22, 25307-25317 (2014)
We demonstrate atomic filtering of frequency-degenerate photon pairs from a sub-threshold optical parametric oscillator (OPO). The filter, a modified Faraday anomalous dispersion optical filter (FADOF), achieves 70% peak transmission simultaneous wit
Externí odkaz:
http://arxiv.org/abs/1406.3968
Publikováno v:
New J. Phys. 16, 073027 (2014)
We apply spin-squeezing techniques to identify and quantify highly multi-partite photonic entanglement in polarization-squeezed light. We consider a practical single-mode scenario, and find that Wineland-criterion polarization squeezing implies entan
Externí odkaz:
http://arxiv.org/abs/1304.2527
Publikováno v:
Phys. Rev. Lett. 111, 143601 (2013)
In analogy with the spin-squeezing inequality of Wang and Sanders [Physical Review A 68, 012101 (2003)], we find inequalities describing macroscopic polarization correlations that are obeyed by all classical fields, and whose violation implies entang
Externí odkaz:
http://arxiv.org/abs/1303.5257
Autor:
Wolfgramm, Florian, Vitelli, Chiara, Beduini, Federica A., Godbout, Nicolas, Mitchell, Morgan W.
Publikováno v:
Nature Photonics 7, 28 (2013)
Quantum metrology uses entanglement and other quantum effects to improve the sensitivity of demanding measurements. Probing of delicate systems demands high sensitivity from limited probe energy and has motivated the field's key benchmark-the standar
Externí odkaz:
http://arxiv.org/abs/1212.4729
Publikováno v:
Optics Letters, Vol. 37, Issue 4, pp. 524-526 (2012)
We present a theoretical and experimental study of the ultra-narrow bandwidth Faraday anomalous dispersion optical filter (FADOF) operating at the rubidium D1 line (795 nm). This atomic line gives better performance than other lines for the main FADO
Externí odkaz:
http://arxiv.org/abs/1110.2362
Autor:
Wolfgramm, Florian, Astiz, Yannick A. de Icaza, Beduini, Federica A., Cere, Alessandro, Mitchell, Morgan W.
Publikováno v:
Phys. Rev. Lett. 106, 053602 (2011)
We demonstrate the generation of rubidium-resonant heralded single photons for quantum memories. Photon pairs are created by cavity-enhanced down-conversion and narrowed in bandwidth to 7 MHz with a novel atom-based filter operating by "interaction-f
Externí odkaz:
http://arxiv.org/abs/1102.0484