UPCommons està en procés de migració del dia 10 fins al 14 Juliol. L’autentificació està deshabilitada per evitar canvis durant aquesta migració.

Collections in this community

Recent Submissions

  • Quantum simulation of non-Abelian lattice gauge theories: A variational approach to ¿8 with dynamical matter 

    Gaz, Emanuele; Popov, Pavel Peychev; Pardo, Guy; Lewenstein, Maciej; Hauke, Philipp; Zohar, Erez (American Physical Society, 2025-07-02)
    Article
    Open Access
    Quantum simulation of lattice gauge theories (LGTs) provides a powerful framework for understanding nonperturbative phenomena. However, to realize the hope of answering challenging physics questions on near-term devices ...
  • Continuous intracranial pressure monitoring in children with ‘benign’ external hydrocephalus 

    Poca Sans, Maria; Cano, Paola; Maruccia, Federica; Fajardo Vega, Carolina; Delgado Martínez, Ignacio; Sahuquillo Barris, Joan; López Bermeo, Diego; Munar Bauzá, Francisca; Garcia Merino, Anna (Multidisciplinary Digital Publishing Institute (MDPI), 2025-04-28)
    Article
    Open Access
    Background/Objectives: This study aimed to evaluate the results of continuous intracranial pressure (ICP) monitoring in children with macrocephaly or rapidly increasing head circumference (HC) diagnosed as benign external ...
  • Dirac points embedded in the continuum 

    Pujol Closa, Maria del Pilar; Artigas García, David (American Physical Society (APS), 2023-11-03)
    Article
    Open Access
    Hermitian Dirac points play a fundamental role in topological phenomena. The introduction of gain or loss leads to non-Hermitian systems, where Dirac points transform into pairs of exceptional points connected by a Fermi ...
  • Isolated spectrally discrete bound states in the continuum in an open system 

    Mukherjee, Samyobrata; Gomis i Bresco, Jordi; Artigas García, David; Torner Sabata, Lluís (American Physical Society, 2023-01-01)
    Article
    Open Access
    Bound states in the continuum (BICs) exist in a variety of physical systems where they appear as lossless propagating states surrounded by radiating modes. In the case of open systems, they coexist with continuous families ...
  • Nano-imaging photoresponse in a moiré unit cell of minimally twisted bilayer graphene 

    Hesp, Niels; Torre, Iacopo; Barcons Ruiz, David; Sheinfux, Hanan Herzig; Watanabe, Kenji; Taniguchi, Takashi; Kumar, Roshan Krishna; Koppens, Frank (2021-03-12)
    Article
    Open Access
    Graphene-based moiré superlattices have recently emerged as a unique class of tuneable solid-state systems that exhibit significant optoelectronic activity. Local probing at length scales of the superlattice should provide ...
  • WSe2 as transparent top gate for infrared near-field microscopy 

    Hesp, Niels; Kamper Svendsen, Mark; Watanabe, Kenji; Taniguchi, Takashi; Thygesen, Kristian Sommer; Torre, Iacopo; Koppens, Frank (2022-08-10)
    Article
    Open Access
    Independent control of carrier density and out-of-plane displacement field is essential for accessing novel phenomena in two-dimensional (2D) material heterostructures. While this is achieved with independent top and bottom ...
  • Engineering high quality graphene superlattices via ion milled ultra-thin etching masks 

    Barcons Ruiz, David; Sheinfux, Hanan Herzig; Hoffmann, Rebecca; Torre, Iacopo; Agarwal, Hitesh; Kumar, Roshan Krishna; Vistoli, Lorenzo; Taniguchi, Takashi; Watanabe, Kenji; Bachtold, Adrian; Koppens, Frank (2022-11-14)
    Article
    Open Access
    Nanofabrication research pursues the miniaturization of patterned feature size. In the current state of the art, micron scale areas can be patterned with features down to ~30¿nm pitch using electron beam lithography. Here, ...
  • Transverse hypercrystals formed by periodically modulated phonon polaritons 

    Sheinfux, Hanan Herzig; Jung, Minwoo; Orsini, Lorenzo; Ceccanti, Matteo; Mahalanabish, Aditya; Martínez Cercós, Daniel; Torre, Iacopo; Barcons Ruiz, David; Janzen, Eli; Edgar, James H.; Pruneri, Valerio; Shvets, Gennady; Koppens, Frank (2023-04-03)
    Article
    Open Access
    Photonic crystals and metamaterials are two overarching paradigms for manipulating light. By combining these approaches, hypercrystals can be created, which are hyperbolic dispersion metamaterials that undergo periodic ...
  • High-quality nanocavities through multimodal confinement of hyperbolic polaritons in hexagonal boron nitride 

    Sheinfux, Hanan Herzig; Orsini, Lorenzo; Jung, Minwoo; Torre, Iacopo; Ceccanti, Matteo; Marconi, Simone; Maniyara, Rinu Abraham; Barcons Ruiz, David; Hötger, Alexander; Bertini, Riccardo; Castilla Gómez, Manuel Sebastián; Hesp, Niels; Janzen, Eli; Holleitner, Alexander; Pruneri, Valerio; Edgar, James H.; Shvets, Gennady; Koppens, Frank (2024-04)
    Article
    Open Access
    Compressing light into nanocavities substantially enhances light–matter interactions, which has been a major driver for nanostructured materials research. However, extreme confinement generally comes at the cost of absorption ...
  • Infrared spectroscopy for diagnosing superlattice minibands in twisted bilayer graphene near the magic angle 

    Li, Geng; Krishna Kumar, Roshan; Stepanov, Petr; Pantaleón, Pierre A.; Zhan, Zhen; Agarwal, Hitesh; Bercher, Adrien; Barrier, Julien; Watanabe, Kenji; Taniguchi, Takashi; Kuzmenko, Alexey B.; Guinea, Francisco; Torre, Iacopo; Koppens, Frank (2024-12-05)
    Article
    Restricted access - publisher's policy
    Twisted bilayer graphene (TBG) represents a highly tunable, strongly correlated electron system. However, understanding the single-particle band structure alone has been challenging due to a lack of spectroscopic measurements ...
  • Entanglement and squeezing of the optical field modes in high harmonic generation 

    Stammer, Philipp Maximilian; Rivera Deán, Javier; Maxwell, Andrew; Lamprou, Theocharis; Argüello Luengo, Javier; Tzallas, Paraskevas; Ciappina, Marcelo Fabian; Lewenstein, Maciej (American Institute of Physics (AIP), 2024-04-05)
    Article
    Open Access
    Squeezed optical fields are a powerful resource for a variety of investigations in basic research and technology. However, the generation of intense squeezed light is challenging. Here, we show that intense squeezed light ...
  • FeNi nanoparticle-modified reduced graphene oxide as a durable electrocatalyst for oxygen evolution 

    Yusnila Khairani, Inna; Jin, Benjin; Palardonio, Sidney; Hagemann, Ulrich; Alonso, Beatriz; Ortega, Amaya; Doñate Buendía, Carlos; Martorell Pena, Jordi; Ros Figueras, Carles; Gökce, Bilal; Kallio, Tanja (2024-09-24)
    Article
    Open Access
    Clean energy transition and decarbonization through hydrogen technology hold a crucial role in revitalizing a sustainable world. The development of catalysts free of precious elements to facilitate the water splitting ...

View more