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Ultra-compact phase modulators based on graphene plasmons

29-Jun-2017

Modulating the amplitude and phase of light is a key ingredient for many of applications such as wavefront shaping, transformation optics, phased arrays, modulators and sensors. Performing this task with high efficiency and small footprint is a major challenge for the development of ...

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Quantum nanoscope

Seeing electrons surfing the waves of light on graphene

09-Jun-2017

Researchers have studied how light can be used to “see” the quantum nature of an electronic material. They managed to do that by capturing light in a net of carbon atoms and slowing down light it down so that it moves almost as slow as the electrons in the graphene. Then something special ...

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Graphene and quantum dots put in motion a CMOS-integrated camera that can see the invisible

31-May-2017

Over the past 40 years, microelectronics have advanced by leaps and bounds thanks to silicon and CMOS (Complementary metal-oxide semiconductors) technology, making possible computing, smartphones, compact and low-cost digital cameras, as well as most of the electronic gadgets we rely on ...

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Molecular selfie reveals how a chemical bond breaks

Proton is seen escaping the molecule

24-Oct-2016

Imagine what it would be like to watch how the individual atoms of molecules rearrange during a chemical reaction to form a new substance, or to see the compounds of DNA move, rearrange and replicate. Such capability would give unprecedented insight to understand and potentially control the ...

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Spin glass physics with trapped ions

31-May-2016

One of the most striking discoveries of quantum information theory is the existence of problems that can be solved in a more efficient way with quantum resources than with any known classical algorithm. Number-partitioning, which refers to the simple task of dividing a set of numbers into two ...

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'God does not play dice'

Experiments tests Einstein's theorem using quantum 'dice'

23-Oct-2015

Random number generators developed at ICFO - The Institute of Photonic Sciences, by the groups of ICREA Professors Morgan W. Mitchell and Valerio Pruneri, played a critical role in the historic experiment by the group of Ronald Hanson at TU Delft. The experiment gives the strongest refutation to ...

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Tracking slow nanolight in natural hyperbolic metamaterial slabs

17-Sep-2015

Researchers at CIC nanoGUNE (Basque Country) in collaboration with colleagues at ICFO - The Institute of Photonic Sciences (Catalunya) have imaged how light moves inside an exotic class of matter known as hyperbolic materials. They observed, for the first time, ultraslow pulse propagation and ...

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Controlling phase changes in solids

A recent study demonstrates the rapid control of phase-changes in resonantly bonded materials

05-Aug-2015

Rewritable CDs, DVDs and Blu-Ray discs owe their existence to phase-change materials, those materials that change their internal order when heated and whose structures can be switched back and forth between their crystalline and amorphous phases. Phase-change materials have even more exciting ...

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A first glimpse inside a macroscopic quantum state

07-Apr-2015

In a recent study published in Physical Review Letters and highlighted by the magazine Science News, the research group led by ICREA Prof at ICFO Morgan Mitchell has detected, for the first time, entanglement among individual photon pairs in a beam of squeezed light.Quantum entanglement is always ...

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Graphene plasmons go ballistic

Graphene combined with the insulting power of boron nitride enables light control in tiny circuits with dramatically reduced energy loss

14-Jan-2015

Squeezing light into tiny circuits and controlling its flow electrically is a holy grail that has become a realistic scenario thanks to the discovery of graphene. This tantalizing achievement is realized by exploiting so-called plasmons, in which electrons and light move together as one coherent ...

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