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  • The carrier-envelope-phase of sub-cycle UV pulses strongly influences the dynamics of quantum systems, but its characterization is not accessible experimentally. Here, an asymmetry in the of angular photofragment distributions of diatomic molecules is identified as a way to imprint carrier-envelope-phase on a measurable quantity.

    • Xiao Xia Dong
    • Yan Rong Liu
    • Song Bin Zhang
    Article Open Access
  • Identifying a universal magnetic ground state across the iron-based superconductor family may help to propose a universal pairing glue responsible for unconventional superconductivity in these intriguing materials. Here, the authors discover an antiferromagnetic stripe order that appears as a precursor to superconductivity in pressured BaFe2Se3, suggesting that the presence of magnetic fluctuations from the stripe order may hold the key to the superconducting pairing of the iron-based superconductors.

    • Wen-Gen Zheng
    • Victor Balédent
    • Pascale Foury-Leylekian
    Article Open Access
  • Topological insulators could be ideal materials for use in electronic devices but complications arising at the interface with metallic electrodes degrades performance values. Here, the authors propose VSe2 as an electrode material investigating the charge dynamics and interface quality using ultrafast transient reflectance measurements and demonstrating the preservation of Dirac surface states of the topological insulator.

    • Tae Gwan Park
    • Jae Ho Jeon
    • Fabian Rotermund
    Article Open Access
  • The bulk-boundary correspondence and Chern number are well-known features of non-trivial topological systems. Here, the authors confirm the bulk-edge correspondence by observing pumping in a one-dimensional topological electric circuit emulating a Chern insulator, where they tune the capacitances of the variable capacitors.

    • Kenichi Yatsugi
    • Tsuneya Yoshida
    • Yasuhiro Hatsugai
    Article Open Access
  • The presence of a constraining environment exerts an influence on the behavior of self-propelled synthetic microswimmers, challenging the prediction and control of their individual and collective behaviour in realistic situations. Here, the authors use multiparticle collision dynamics to simulate self-propelled Janus toroidal particles near a wall and study how various contributions, such as thermal fluctuations, hydrodynamic and electrostatic interactions, chemical reactions, and gravity govern their collective behaviour.

    • Jiyuan Wang
    • Mu-Jie Huang
    • Igor S. Aranson
    Article Open Access
  • HfO2-based ferroelectric materials have immense technological potential and so significant attention has been given to improve the ferroelectric properties at low-thickness. Here, using Landau Devonshire theory, the authors show the origin of pinched hysteresis loops is connected with the existence of pronounced depolarizing fields which are minimized during field cycling recovering the full ferroelectric loops.

    • Nikitas Siannas
    • Christina Zacharaki
    • Athanasios Dimoulas
    Article Open Access
  • Strong random disorder is known to suppress superconductivity. In this work, authors showed that when impurities are correlate with each other, superconductivity is more robust and thus its properties can be controlled by spatial correlations of impurities and defects.

    • Vyacheslav D. Neverov
    • Alexander E. Lukyanov
    • Mihail D. Croitoru
    Article Open Access
  • A long-standing challenge for on-chip dielectric laser-based accelerators is to bridge the gap between nonrelativistic and relativistic regimes. Here, an all-optical acceleration scheme is proposed that maximises the electron-field interaction length, and hence the acceleration, by spatio-temporal pulse shaping.

    • Lu Wang
    • Uwe Niedermayer
    • Liejia Qian
    Article Open Access
  • Driving quantum materials into non-equilibrium states using light-matter interactions is a way to induce novel quantum phases not attainable in equilibrium. Here, the authors theoretically demonstrate that circularly-polarised light can alter a d-wave superconductor in a strong-correlation regime into a topological superconducting state with broken time-reversal symmetry, as a combined effect of light and strong correlation.

    • Sota Kitamura
    • Hideo Aoki
    Article Open Access
  • The Kibble-Zurek (KZ) mechanism is traditionally an equilibrium scaling argument that yields an estimate for the density of topological defects in the ordered phase as a function of the quenching rate close to the critical point. Here, the authors show that this argument can be applied to nonequilibrium phase transitions and demonstrate numerically that for superconducting vortex lattices and colloidal ensembles the defect number follow a power law given by the directed percolation universality class.

    • C. J. O. Reichhardt
    • A. del Campo
    • C. Reichhardt
    Article Open Access
  • The availability of large amount of data has made network science a tool to be used across many disciplines. The authors derive a mathematical approximation that link two of the most used centrality measures in graph theory, degree and closeness, finding that the inverse of closeness is linearly dependent on the logarithm of degree; this relationship is also tested with real world networks finding good agreement.

    • Tim S. Evans
    • Bingsheng Chen
    Article Open Access
  • Random number generators (RNGs) are indispensable tools for information security. The authors derive a security proof for a quantum RNG based on parity-symmetric radioactive decay, which can be made as small as a few-square-millimeter chip and whose source has no need for power generation.

    • Toyohiro Tsurumaru
    • Toshihiko Sasaki
    • Izumi Tsutsui
    Article Open Access
  • Fractional quantum Hall states are the best known examples of emergent quantum matter with topological order. Here, the authors present a fusion mechanism for particle fractionalization and a conjecture on the universal long-distance behavior of edge excitations in fractional quantum Hall fluids.

    • Arkadiusz Bochniak
    • Zohar Nussinov
    • Gerardo Ortiz
    Article Open Access
  • With the amount of data available growing at exponential rates, methods based on networks have become a key tool for their investigation. The authors propose a framework to the study multilayer networks using a random walks with restart (RWR) method, which highlights the important influence of bipartite networks.

    • Anthony Baptista
    • Aitor Gonzalez
    • Anaïs Baudot
    Article Open Access
  • In scaling to global distances, future quantum networks are expected to make use of satellite-based orbiting quantum memories. In this manuscript, the authors simulate the performance of memory-assisted quantum key distribution (MA-QKD) schemes under a range of operating conditions and network configurations, with encouraging conclusions as to the feasibility of implementing such networks with near-term devices.

    • Julius Wallnöfer
    • Frederik Hahn
    • Janik Wolters
    Article Open Access
  • Phase separation phenomenon is a possible mechanism for important biological functions, from facilitating transcription by condensate formation, to the transport of cargo in the cell. This paper puts forward viscoelastic phase separation as a previously overlooked mechanism that could explain peculiar features of living cells such as network-like morphologies.

    • Hajime Tanaka
    Article Open Access
  • Direct observation of light-induced topological Floquet states can be challenging due to a number of obstacles such as laser-assisted photoemission which can complicate photoemission spectra. Here, the authors report a theoretical approach to the identification of topological Floquet states using circular dichroism in angle resolved photoemission spectroscopy.

    • Michael Schüler
    • Samuel Beaulieu
    Article Open Access