Welcome !

This is the cialis for sale online website of the Laboratory of Nonlinear Photonics and Theoretical Physics at the Department of secondfleet.org Physics of the University Sapienza and the Institute for Complex Systems of the National Research Council. Our program is applying paradigms from the science of complex systems to light propagation, and investigating the development of complexity and self-organization in nonlinear waves. We want to test and deepen ideas of fundamental physics by using optics and photonics, and developing experiments, high performance computing approaches, and theory.

Please visit our research pages or our Blog.


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The Math of Irreversibility

In a paper in arXiv Giulia Marcucci and Claudio Conti report on kvdn-nijmegen.nl the mathematical structures of the best place best price for cialis the so-called Time Asymmetric Quantum Mechanics. This theory predicts that time-travel is not possible and explain evidences as the Big Bang or the decay of unstable particles. The authors argue that possible shaping of the initial state of a system may furnish a road to validate these fascinating developments in quantum mechanics. The work also follows the just try! viagra soft tabs experimental evidence of the quantization of the decays rates.

The picture below shows a pictorial representation of the Gelfand triplet, the phase space of viagra online no prescription the Time Asymmetric Quantum Mechanics

IrreversibilityMath

Last Updated (Thursday, 28 July 2016 08:53)

 

Quantum X waves with orbital angular momentum

Multi-level quantum protocols may potentially supersede standard quantum optical polarization-encoded protocols in terms of amount of information transmission and buy canadian cialis online'>buy canadian cialis online security. However, for free space telecomunications, we do not have tools for limiting loss due to diffraction and perturbations, as for example turbulence in air.

In a recent manuscript in arXiv, Marco Ornigotti, Leone di Mauro Villari, Alexander Szeimeit, and Claudio Conti study propagation invariant quantum X-waves with angular momentum. The adopted representation expresses the electromagnetic field as a quantum gas of weakly interacting bosons. The resulting spatio-temporal quantized light pulses are not subject to diffraction and dispersion, and are intrinsically resilient to disturbances in propagation. Spontaneous down-conversion generates squeezed X-waves useful for quantum protocols. Surprisingly the orbital angural momentum affects the squeezing angle, and a characteristic axicon aperture for maximal squeezing exists.

There results may boost the applications in free space of quantum optical transmission and multi-level quantum protocols, and may also be relevant for novel kinds of interferometers, as satellite-based gravitational wave detectors.

squeezingXwavesOAM

Last Updated (Saturday, 16 July 2016 10:38)

 

Cylindrically polarized X-waves paper of the week!

Journal of Optics elects the paper on cylindrically polarized X-waves, a new class of http://secondfleet.org/cialis-pill propagation invariant ultrashort light pulses with radial or azymuthal polarization as Paper of the Week.

Marco Ornigotti, Claudio Conti, and Alexander Szameit extend to the polychromatic domain the secondfleet.org light beams with cylindrical polarization, which have widespread applications in microscopy and spectroscopy.

These light pulses represent a fully vectorial solution of Maxwell equations, can be focused at the sub-wavelength scale and may open a number of possibilities for a new generation of imaging devices, and for free space information transmission.

The paper was published in Journal of Optics (ArXiv:1602.03317)

cylXwaves

Last Updated (Friday, 10 June 2016 15:19)

 

The Quest for Quantum Gravity in Optics

Quantum gravity challenges inspire a great variety of scientists, and photonics is www.warmandsafenow.com opening several interesting and related directions.

In a paper posted in the ArXiv, Maria Chiara Braidotti, Ziad Musslimani and Claudio Conti show the way the generalized uncertainty principle, introduced for studying physics at the Planck scale, has a role in optics, and may stimulate unexpected applications for high resolution imaging and ultrafast propagation.

The picture below shows a representation of the generalized uncertainty principle (G-UP) and the difference with the standard Heisenberg principle (H-UP), further details in our paper in the ArXiv.

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Last Updated (Sunday, 01 May 2016 12:34)