Searched for: department:"Quantum%5C+Nanoscience"
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De Angelis, L. (author), Kuipers, L. (author)
Vortices, phase singularities, and topological defects of any kind often reflect information that is crucial for understanding physical systems in which such entities arise. With near-field experiments supported by numerical calculations, we determine the fluctuations of the topological charge for phase singularities in isotropic random waves as...
journal article 2018
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Davidovikj, D. (author), Poot, M. (author), Cartamil Bueno, S.J. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author)
For the study and application of graphene membranes, it is essential to have means to control their resonance frequency and temperature. Here, we present an on-chip heater platform for local tuning of in-plane tension in graphene mechanical resonators. By Joule heating of a metallic suspension ring we show thermomechanical resonance frequency...
journal article 2018
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Alpeggiani, F. (author), Gong, Su Hyun (author), Kuipers, L. (author)
The two-dimensional excitons of transition metal dichalcogenide (TMDC) monolayers make these materials extremely promising for optical and optoelectronic applications. When the excitons interact with the electromagnetic field, they will give rise to exciton-polaritons, i.e., modes that propagate in the material plane while being confined in...
journal article 2018
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Alpeggiani, F. (author), Bliokh, K. Y. (author), Nori, F. (author), Kuipers, L. (author)
Optical helicity density is usually discussed for monochromatic electromagnetic fields in free space. It plays an important role in the interaction with chiral molecules or nanoparticles. Here we introduce the optical helicity density in a dispersive isotropic medium. Our definition is consistent with biorthogonal Maxwell electromagnetism in...
journal article 2018
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Gong, S. (author), Alpeggiani, F. (author), Sciacca, Beniamino (author), Garnett, Erik C. (author), Kuipers, L. (author)
2<...
journal article 2018
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Langford, N.K. (author), Sagastizabal, R.E. (author), Kounalakis, M. (author), Dickel, C. (author), Bruno, A. (author), Lüthi, F. (author), Thoen, D.J. (author), Endo, A. (author), Di Carlo, L. (author)
The quantum Rabi model describing the fundamental interaction between light and matter is a cornerstone of quantum physics. It predicts exotic phenomena like quantum phase transitions and ground-state entanglement in ultrastrong and deep-strong coupling regimes, where coupling strengths are comparable to or larger than subsystem energies....
journal article 2017
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Jöns, K.D. (author), Schweickert, L.S. (author), Versteegh, M.A.M. (author), Dalacu, Dan (author), Poole, Philip J. (author), Gulinatti, Angelo (author), Giudice, Andrea (author), Zwiller, V.G. (author), Reimer, M.E. (author)
Global, secure quantum channels will require efficient distribution of entangled photons. Long distance, low-loss interconnects can only be realized using photons as quantum information carriers. However, a quantum light source combining both high qubit fidelity and on-demand bright emission has proven elusive. Here, we show a bright photonic...
journal article 2017
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de Angelis, L. (author), Alpeggiani, F. (author), Di Falco, Andrea (author), Kuipers, L. (author)
Phase singularities are locations where light is twisted like a corkscrew, with positive or negative topological charge depending on the twisting direction. Among the multitude of singularities arising in random wave fields, some can be found at the same location, but only when they exhibit opposite topological charge, which results in their...
journal article 2017
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Assali, S. (author), Lähnemann, J. (author), Vu, TTT (author), Jöns, K.D. (author), Gagliano, L (author), Verheijen, M. A. (author), Akopian, N. (author), Bakkers, E.P.A.M. (author), Haverkort, J. E.M. (author)
One of the major challenges in the growth of quantum well and quantum dot heterostructures is the realization of atomically sharp interfaces. Nanowires provide a new opportunity to engineer the band structure as they facilitate the controlled switching of the crystal structure between the zinc-blende (ZB) and wurtzite (WZ) phases. Such a...
journal article 2017
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Alpeggiani, F. (author), Parappurath, N. (author), Verhagen, Ewold (author), Kuipers, L. (author)
The scattering matrix is a fundamental tool to quantitatively describe the properties of resonant systems. In particular, it enables the understanding of many photonic devices of current interest, such as photonic metasurfaces and nanostructured optical scatterers. In this contribution, we show that the scattering matrix of a photonic system...
conference paper 2017
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Kosters, N.D. (author), De Hoogh, Anouk (author), Zeijlemaker, Hans (author), Acar, Hakkl (author), Rotenberg, Nir (author), Kuipers, L. (author)
We introduce core-shell plasmonic nanohelices, highly tunable structures that have a different response in the visible for circularly polarized light of opposite handedness. The glass core of the helices is fabricated using electron beam induced deposition and the pure gold shell is subsequently sputter coated. Optical measurements allow us...
journal article 2017
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Bos, Boy Gustaaf Cornelis (author), Thoen, D.J. (author), Haalebos, E.A.F. (author), Gimbel, P. M.L. (author), Klapwijk, T.M. (author), Baselmans, J.J.A. (author), Endo, A. (author)
The superconducting critical temperature (T-\mathrm{c} > 15 K) of niobium titanium nitride (NbTiN) thin films allows for low-loss circuits up to 1.1 THz, enabling on-chip spectroscopy and multipixel imaging with advanced detectors. The drive for large-scale detector microchips is demanding NbTiN films with uniform properties over an...
journal article 2017
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Parappurath, N. (author), Alpeggiani, F. (author), Kuipers, L. (author), Verhagen, Ewold (author)
We observe that the asymmetric transmission (AT) through photonic systems with a resonant chiral response is strongly related to the far-field properties of eigenmodes of the system. This understanding can be used to predict the AT for any resonant system from its complex eigenmodes. We find that the resonant chiral phenomenon of AT is...
journal article 2017
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Houri, S. (author), Cartamil Bueno, S.J. (author), Poot, M. (author), Steeneken, P.G. (author), van der Zant, H.S.J. (author), Venstra, W.J. (author)
journal article 2017
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Baselmans, J.J.A. (author), Bueno, J. (author), Yates, Stephen J.C. (author), Yurduseven, O. (author), Llombart Juan, N. (author), Karatsu, K. (author), Baryshev, A. M. (author), Ferrarini, L (author), Endo, A. (author), Thoen, D.J. (author), de Visser, P.J. (author), Janssen, R.M.J. (author), Murugesan, V. (author), Driessen, E.F.C. (author), Coiffard, G. (author), Martin-Pintado, J. (author), Hargrave, P. (author), Griffin, M. (author)
Aims. Future astrophysics and cosmic microwave background space missions operating in the far-infrared to millimetre part of the spectrum will require very large arrays of ultra-sensitive detectors in combination with high multiplexing factors and efficient low-noise and low-power readout systems. We have developed a demonstrator system suitable...
journal article 2017
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Yurduseven, O. (author), Bosma, S. (author), Endo, A. (author), Neto, A. (author), Llombart Juan, N. (author)
DESHIMA (Deep Spectroscopic High-redshift Mapper) is an instrument aiming at efficiently making spectroscopic redshift measurements of sub-mm wave galaxies (SMGs), thereby providing about the formation and the evolution of stars and galaxies. The aim of this work is to provide a preliminary study into the design of a wideband leaky lens antenna...
conference paper 2017
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de Angelis, L. (author), Alpeggiani, F. (author), Di Falco, Andrea (author), Kuipers, L. (author)
Phase singularities can be created and annihilated, but always in pairs. With optical near-field measurements, we track singularities in random waves as a function of wavelength, and discover correlations between creation and annihilation events.
conference paper 2017
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Alpeggiani, F. (author), Parappurath, N. (author), Verhagen, E. (author), Kuipers, L. (author)
It is well known that the quasinormal modes (or resonant states) of photonic structures can be associated with the poles of the scattering matrix of the system in the complex-frequency plane. In this work, the inverse problem, i.e., the reconstruction of the scattering matrix from the knowledge of the quasinormal modes, is addressed. We develop...
journal article 2017
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Girovský, J. (author), Lado, José L. (author), Kalff, F.E. (author), Fernández-Rossier, Joaquín (author), Otte, A.F. (author)
The interaction of electrons with a periodic potential of atoms in crystalline solids gives rise to band structure. The band structure of existing materials can be measured by photoemission spectroscopy and accurately understood in terms of the tight-binding model, however not many experimental approaches exist that allow to tailor artificial...
journal article 2017
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Parappurath, N. (author), Alpeggiani, F. (author), Kuipers, L. (author), Verhagen, Ewold (author)
conference paper 2017
Searched for: department:"Quantum%5C+Nanoscience"
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