Matter waves and particle beams articles within Nature Communications

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  • Article
    | Open Access

    Electron holography and microscopy have long been used to map static electric and magnetic fields. Here, authors establish Lorentz Microscopy of Optical Fields, a new technique that uses the deflection and interference of an electron beam to obtain phase-resolved images of nanoscale optical fields.

    • John H. Gaida
    • , Hugo Lourenço-Martins
    •  & Claus Ropers

  • Article
    | Open Access

    The authors propose an implementation of Floquet non-Abelian topological insulators in a 1D three-band system with parity-time symmetry. Furthermore, they demonstrate that the bulk-edge correspondence is multifold and follows the multiplication rule of a quaternion group.

    • Tianyu Li
    •  & Haiping Hu

  • Article
    | Open Access

    Usually, increasing the temperature of a system leads to disorder but supersolids can show the opposite trend. Here, the authors discuss the observation of a supersolid phase in a dilute gas of dysprosium atoms by increasing their temperature.

    • J. Sánchez-Baena
    • , C. Politi
    •  & T. Pohl

  • Article
    | Open Access

    Making Bohmian mechanics fully compatible with special relativity is still an ongoing challenge. Here, the authors make a further step in this direction by providing a way of constructing the relativistic Bohmian-type velocity field of single photons which is operationally based on weak measurements.

    • Joshua Foo
    • , Estelle Asmodelle
    •  & Timothy C. Ralph

  • Article
    | Open Access

    Manipulating the rotational motions of molecules may provide a tool for controlling chemical processes. Here the authors demonstrate that the rotation of a D2 molecule can be stopped, upon collision with a metal surface, by a magnetic field that affects the rotational levels to a much smaller extent than the energy difference upon de-excitation.

    • Helen Chadwick
    • , Mark F. Somers
    •  & Gil Alexandrowicz

  • Article
    | Open Access

    Previously, the study of caustics has mostly focused on experiments with light. Here, the authors demonstrate gravitational caustics and investigate catastrophe atom optics using the matter waves of an atom laser generated from a Bose-Einstein condensate.

    • M. E. Mossman
    • , T. M. Bersano
    •  & P. Engels

  • Article
    | Open Access

    A travelling wave inside a metal slit can reveal its own waveform by probing deflecting motions of charged particles. Here, a real-time THz oscilloscope was demonstrated by utilizing the relativistic electrons and the subwavelength slit waveguide.

    • In Hyung Baek
    • , Hyun Woo Kim
    •  & Young Uk Jeong

  • Article
    | Open Access

    Atom interferometers can be useful for precision measurement of fundamental constants and sensors of different type. Here the authors demonstrate a compact twin-lattice atom interferometry exploiting Bose-Einstein condensates (BECs) of 87 Rb atoms.

    • Martina Gebbe
    • , Jan-Niclas Siemß
    •  & Ernst M. Rasel

  • Article
    | Open Access

    Here the authors show that radiation emitted by individual electrons can be controlled by shaping the electron wavepacket. They present feasible examples for applications including collimated and monochromatic X-ray emission from specially shaped electrons.

    • Liang Jie Wong
    • , Nicholas Rivera
    •  & Ido Kaminer

  • Article
    | Open Access

    Conducting atom-optical experiments in space is interesting for fundamental physics and challenging due to different environment compared to ground. Here the authors report matter-wave interferometry in space using atomic BECs in a sounding rocket.

    • Maike D. Lachmann
    • , Holger Ahlers
    •  & Ernst M. Rasel

  • Article
    | Open Access

    Anderson localization has been previously reported in 1D and 3D but it has remained elusive in 2D environments. Here the authors report probable observation of 2D Anderson localization using ultracold atoms in a weak interaction regime.

    • Donald H. White
    • , Thomas A. Haase
    •  & David A. W. Hutchinson

  • Article
    | Open Access

    Matter-wave interferometry of complex molecules is challenging due to difficulties in preparing and detecting molecular beams. Here the authors demonstrate quantum behavior of a polypeptide using matter-wave interference in an all-optical time-domain Talbot-Lau interferometer.

    • A. Shayeghi
    • , P. Rieser
    •  & M. Arndt

  • Article
    | Open Access

    Exploring correlations in strongly entangled quantum materials is of interest. Here the authors generate a tunable spin-, trajectory-, and energy-entangled neutron beam using a neutron spin-echo interferometer and show violations of Clauser-Horne-Shimony-Holt and Mermin contextuality inequalities with micron-scale trajectory separation.

    • J. Shen
    • , S. J. Kuhn
    •  & R. Pynn

  • Article
    | Open Access

    Entangled particles some distance apart can be used to show the strikingly nonlocal nature of quantum mechanics. Here the authors generate spatially separated pairs of helium atoms by colliding Bose-Einstein condensates and show that they are entangled by observing nonlocal correlations.

    • D. K. Shin
    • , B. M. Henson
    •  & A. G. Truscott

  • Article
    | Open Access

    The wave nature of light and particles is of interest to the fundamental quantum mechanics. Here the authors show the double-slit interference effect in the strong-field ionization of neon dimers by employing COLTRIMS method to record the momentum distribution of the photoelectrons in the molecular frame

    • Maksim Kunitski
    • , Nicolas Eicke
    •  & Reinhard Dörner

  • Article
    | Open Access

    Self-interaction of a bound state through its coupling to the continuum is a phenomenon that is very difficult to observe. Here, the authors optically collide atomic clouds of rubidium and potassium to observe the self-interaction energy through precise measurements of magnetically tunable Feshbach resonances.

    • Ryan Thomas
    • , Matthew Chilcott
    •  & Niels Kjærgaard

  • Article
    | Open Access

    The experimental evidence of radiation reaction has so far been elusive. Here the authors provide the signature of radiation reaction in quantum electrodynamics by observing the radiation reaction effects when high-energy positrons emit radiation while propagating through a  silicon crystal.

    • Tobias N. Wistisen
    • , Antonino Di Piazza
    •  & Ulrik I. Uggerhøj

  • Article
    | Open Access

    Measuring gravitational and inertial acceleration in a moving platform is important for sensing and navigation but is also very challenging. Here the authors demonstrate the ship-borne absolute gravity acceleration measurements using an atom interferometer.

    • Y. Bidel
    • , N. Zahzam
    •  & M. F. Lequentrec-Lalancette

  • Article
    | Open Access

    Generation of mesoscopic quantum superpositions requires both reliable coherent control and isolation from the environment. Here, the authors succeed in creating a variety of cat states of a single trapped atom, mapping spin superpositions into spatial superpositions using ultrafast laser pulses.

    • K. G. Johnson
    • , J. D. Wong-Campos
    •  & C. Monroe

  • Article
    | Open Access

    Vortex electron beams are generated using single electrons but their low beam-density is a limitation in electron microscopy. Here the authors propose a scheme for the realization of non-diffracting electron beams by shaping wavepackets of multiple electrons and including electron–electron interactions.

    • Maor Mutzafi
    • , Ido Kaminer
    •  & Mordechai Segev

  • Article
    | Open Access

    Studies on energy-dependent scattering of ultracold atoms were previously carried out near zero collision energies. Here, the authors observe a magnetic Feshbach resonance in ultracold Rb collisions for above-threshold energies and their method can also be used to detect higher partial wave resonances.

    • Milena S. J. Horvath
    • , Ryan Thomas
    •  & Niels Kjærgaard

  • Article
    | Open Access

    Existing methods of characterizing electron beams carrying orbital angular momentum are inefficient as they allow measuring one OAM state at a time. Here the authors demonstrate an OAM spectrometer capable of analysing multiple OAM states and a potential tool for probing magnetic materials.

    • Vincenzo Grillo
    • , Amir H. Tavabi
    •  & Ebrahim Karimi

  • Article
    | Open Access

    Multiple scattering with wave-like atoms is known to produce non-trivial many-body effects. Here, the authors investigate multiple scattering in the semi-classical limit using deviations in the scattering halos produced by the collision of indistinguishable ultracold fermions.

    • R. Thomas
    • , K. O. Roberts
    •  & N. Kjærgaard

  • Article
    | Open Access

    Plasma wakefield accelerators produce gradients that are orders of magnitude larger than in conventional particle accelerator, but beams tend to be disrupted by transverse forces. Here the authors create an extended hollow plasma channel, which accelerates positrons without generating transverse forces.

    • Spencer Gessner
    • , Erik Adli
    •  & Gerald Yocky

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