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Showing 1 to 12 of 86 entries
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Fast escape of a quantum walker from an integrated photonic maze.

Nature communications

Caruso F, Crespi A, Ciriolo AG, Sciarrino F, Osellame R.
PMID: 27248707
Nat Commun. 2016 Jun 01;7:11682. doi: 10.1038/ncomms11682.

Escaping from a complex maze, by exploring different paths with several decision-making branches in order to reach the exit, has always been a very challenging and fascinating task. Wave field and quantum objects may explore a complex structure in...

Suppression law of quantum states in a 3D photonic fast Fourier transform chip.

Nature communications

Crespi A, Osellame R, Ramponi R, Bentivegna M, Flamini F, Spagnolo N, Viggianiello N, Innocenti L, Mataloni P, Sciarrino F.
PMID: 26843135
Nat Commun. 2016 Feb 04;7:10469. doi: 10.1038/ncomms10469.

The identification of phenomena able to pinpoint quantum interference is attracting large interest. Indeed, a generalization of the Hong-Ou-Mandel effect valid for any number of photons and optical modes would represent an important leap ahead both from a fundamental...

Benchmarking integrated linear-optical architectures for quantum information processing.

Scientific reports

Flamini F, Spagnolo N, Viggianiello N, Crespi A, Osellame R, Sciarrino F.
PMID: 29123136
Sci Rep. 2017 Nov 09;7(1):15133. doi: 10.1038/s41598-017-15174-2.

Photonic platforms represent a promising technology for the realization of several quantum communication protocols and for experiments of quantum simulation. Moreover, large-scale integrated interferometers have recently gained a relevant role in quantum computing, specifically with Boson Sampling devices and...

Femtosecond laser inscription of Bragg grating waveguides in bulk diamond.

Optics letters

Bharadwaj V, Courvoisier A, Fernandez TT, Ramponi R, Galzerano G, Nunn J, Booth MJ, Osellame R, Eaton SM, Salter PS.
PMID: 28957060
Opt Lett. 2017 Sep 01;42(17):3451-3453. doi: 10.1364/OL.42.003451.

Femtosecond laser writing is applied to form Bragg grating waveguides in the diamond bulk. Type II waveguides are integrated with a single pulse point-by-point periodic laser modification positioned toward the edge of the waveguide core. These photonic devices, operating...

Optofluidic light modulator integrated in lab-on-a-chip.

Optics express

Paiè P, Bragheri F, Claude T, Osellame R.
PMID: 28380855
Opt Express. 2017 Apr 03;25(7):7313-7323. doi: 10.1364/OE.25.007313.

Microfluidic lenses are relevant optical components for sensing application in lab-on-a-chip devices, guaranteeing a robust alignment of the elements, a high level of compactness and tunable optical properties. In this work we describe an innovative integrated in-plane microfluidic lens....

Observation of surface states with algebraic localization.

Physical review letters

Corrielli G, Della Valle G, Crespi A, Osellame R, Longhi S.
PMID: 24329428
Phys Rev Lett. 2013 Nov 27;111(22):220403. doi: 10.1103/PhysRevLett.111.220403. Epub 2013 Nov 26.

We introduce and experimentally demonstrate a class of surface bound states with algebraic decay in a one-dimensional tight-binding lattice. Such states have an energy embedded in the spectrum of scattered states and are structurally stable against perturbations of lattice...

Er:Yb-doped waveguide laser fabricated by femtosecond laser pulses.

Optics letters

Taccheo S, Valle GD, Osellame R, Cerullo G, Chiodo N, Laporta P, Svelto O, Killi A, Morgner U, Lederer M, Kopf D.
PMID: 15552666
Opt Lett. 2004 Nov 15;29(22):2626-8. doi: 10.1364/ol.29.002626.

Laser action is demonstrated in a 20-mm-long waveguide fabricated on an Er:Yb-doped phosphate glass by femtosecond laser pulses. An output power of 1.7 mW with approximately 300 mW of pump power coupled into the waveguide is obtained at 1533.5...

Imaging of Bloch oscillations in erbium-doped curved waveguide arrays.

Optics letters

Chiodo N, Della Valle G, Osellame R, Longhi S, Cerullo G, Ramponi R, Laporta P, Morgner U.
PMID: 16688250
Opt Lett. 2006 Jun 01;31(11):1651-3. doi: 10.1364/ol.31.001651.

We report a direct observation of Bloch-like dynamics of light in curved waveguide arrays manufactured in Er:Yb-doped phosphate glass by femtosecond laser writing. The green upconversion fluorescence emitted by excited erbium ions is exploited to image the flow of...

Fabrication of binary Fresnel lenses in PMMA by femtosecond laser surface ablation.

Optics express

Vázquez RM, Eaton SM, Ramponi R, Cerullo G, Osellame R.
PMID: 21716392
Opt Express. 2011 Jun 06;19(12):11597-604. doi: 10.1364/OE.19.011597.

We report on the fabrication of binary Fresnel lenses by femtosecond laser surface ablation of poly(methyl methacrylate) (PMMA) substrates. Tight focusing of the laser pulses produced a minimum ablated feature size of 600 nm, enabling the creation of lenses...

Fabrication of photonic devices in nanostructured glasses by femtosecond laser pulses.

Optics express

Martinez-Vazquez R, Osellame R, Cerullo G, Ramponi R, Svelto O.
PMID: 19550531
Opt Express. 2007 Oct 01;15(20):12628-35. doi: 10.1364/oe.15.012628.

Focused femtosecond laser pulses have been used to modify the optical properties of glass doped with CdSxSe1-x nanocrystals. Large positive refractive index changes have been observed and exploited for the fabrication of photonic devices. In particular, we report on...

Optical properties of waveguides written by a 26 MHz stretched cavity Ti:sapphire femtosecond oscillator.

Optics express

Osellame R, Chiodo N, Maselli V, Yin A, Zavelani-Rossi M, Cerullo G, Laporta P, Aiello L, De Nicola S, Ferraro P, Finizio A, Pierattini G.
PMID: 19488391
Opt Express. 2005 Jan 24;13(2):612-20. doi: 10.1364/opex.13.000612.

We report on the fabrication, by a 26 MHz stretched-cavity femtosecond Ti:sapphire oscillator, of optical waveguides in different glass substrates, and their optical characterization. Operation of these waveguides in the telecom range at 1.55 microm is demonstrated. Digital holography...

Quantum interferometry with three-dimensional geometry.

Scientific reports

Spagnolo N, Aparo L, Vitelli C, Crespi A, Ramponi R, Osellame R, Mataloni P, Sciarrino F.
PMID: 23181189
Sci Rep. 2012;2:862. doi: 10.1038/srep00862. Epub 2012 Nov 22.

Quantum interferometry uses quantum resources to improve phase estimation with respect to classical methods. Here we propose and theoretically investigate a new quantum interferometric scheme based on three-dimensional waveguide devices. These can be implemented by femtosecond laser waveguide writing,...

Showing 1 to 12 of 86 entries