You Are Here: Home

Hiding Under a Plasmonic Carpet


The group led by Prof. Romain Quidant reports new advances towards invisibility at optical frequencies.

20100725_romainOptics Express has recently published a theoretical and experimental demonstration of a carpet which can make objects invisible to the eye of an observer. The carpet is made of a metamaterial, an artificial nanopatterned material engineered to have optical properties nonexisting in natural materials. When placed in front of an object lying on a surface, these materials interact with incident light producing an optical response representative of the surface without the object, thus making the later invisible. This effect, previously observed at lower frequencies, has been achieved now over the unprecedented bandwidth of 650 to 900 nm, i.e., within the visible range.

Read more: Hiding Under a Plasmonic Carpet in Nature, with ultimate wave-packet control


Researchers led by Prof. Niek van Hulst publish in Nature the first observation of the vibrational dynamics of single molecules.

Ultimate Wave-Packet Control
During the past few decades, two techniques have transformed the ways in which researchers can probe molecular processes: coherent control over dynamic processes by manipulating quantum interference effects with shaped laser pulses, and single-molecule detection. Now ICFO PhD Student Daan Brinks and colleagues, led by ICFO/ICREA Prof. Niek van Hulst, show that the two approaches can be combined, allowing not only the observation, but also the manipulation of vibrational wave-packet interference in individual molecules at ambient conditions. The single-molecule approach ensures that the ultimate degree of coherent control can be realized, which could help unravel details of molecular function and how it may be affected by dynamics in systems as diverse as conjugated polymers, light-harvesting complexes and photo-active proteins.


Read more: in Nature, with ultimate wave-packet control

SYLVAIN GIGAN 'Can One See Through Opaque Material?'


20100531-Sylvian-Gigan_157pxSYLVAIN GIGAN
Laboratoire d'Optique, Paris, FRANCE
ESPCI, Cergy-Pontoise Cedex, FRANCE
Seminar, May 31, 2010, 12:00. Seminar Room

When light propagates in a disordered material, information is seemingly lost. This is why we can't see through most biological samples. Nonetheless, propagation of waves in complex media give rise to a lot of interesting physics, ranging from photonic crystals to Anderson localization, from strong coupling to quantum correlations.

Recently, a method has been proposed by A. Mosk and coworkers to focus light through a multiple scattering material, using a spatial light modulator as a tool to shape the incoming beam to obtain a maximal interference on a speckle spot of the output speckle pattern. The result is a diffraction limited spot which can be several hundred time brighter than the rest of the speckle.

Read more: SYLVAIN GIGAN 'Can One See Through Opaque Material?'


2nd Annual NanoLight Meeting



Nanolight-2010-Valencia-5Cubo Rojo (SALON DE ACTOS), Universitat Politécnica de Valencia
March 9 2010




Read more: 2nd Annual NanoLight Meeting

ICFO in APS Physics


A joint work of Professors Novotny, Quidant, and van Hulst in the American Physical Society web spotlight.

forbidden-transition_157px“Never say never to a forbidden transition”: the issue of January 19 of Physics offers a synopsis commenting on recent results by researchers from ICFO and the University of Rochester on the free space excitation of propagating Surface Plasmon Polaritons (SPPs).

Read more: ICFO in APS Physics


Page 2 of 5

Copyright © 2010. All Rights Reserved. Designed by GPL@vui