Research articles

Quantum memories are essential for the move towards quantum based technology such as quantum networks and computers. By exploiting spontaneous Raman scattering, the authors demonstrate a broadband quantum memory protocol that can be operated at room temperature.

Magnonics is gaining momentum as an emerging technology for information processing. The authors experimentally demonstrated spin-wave propagation within nanopatterned circuits based on domain walls, using time-resolved scanning transmission X-ray microscopy imaging.

The challenge of transmitting noise-free quantum optical signals needs to be overcome before they can be readily applied to quantum communication devices. The authors present a method using standard components to amplify quantum optical signals while reducing the effects of noise and maintain a high-quality, secure signal.

An extreme-mass-ratio inspiral, generally consists of a stellar-mass black hole and a supermassive black hole. The authors propose an alternative scenario where the small black hole is replaced by a binary black hole, and show how likely their gravitation wave signal can be detected, simultaneously, by LISA and LIGO.

The continue advancement in accelerators instrumentation is placing increasingly stringent requirements on the measure of beam sizes. The paper discusses the development of an electron beam diagnostics for measuring sub-micron beam sizes, opening the window to sub-micrometre resolution.

Spin waves are promising candidates as a building block for future magnonic devices. The authors present a combined numerical and experimental study of spin-wave interferences in stacks of magnetic vortices that are efficient spin-wave emitters in the nanometre regime.

Optical frequency combs are important technology used in physics to distinguish between waves of different frequency. The authors have demonstrated experimentally and theoretically that quantum coherence of single photons with frequency comb characteristics can be induced by erasing which-path information of a pair of entangled photons.

Polar semiconductor nanostructures are important for a range of electro-optical applications such as quantum information technology. The authors experimentally demonstrate an unconventional semiconductor design called an internal field guarded active region design (IFGARD) that can suppress unwanted secondary effects caused by polarity and improve device performance.

One of the oldest problems in elementary quantum mechanics, the exact time that it takes for a particle to tunnel, remains an open question. This paper is devoted to the tunnelling time problem and shows that the accurate measurement of the duration spent in the barrier is not possible without destroying the interference which creates the tunnelled wave packet

In recent years, photonic structures that mediate the transfer of energy from a laser to a particle beam have gained interest as a way to access more compact accelerations techniques for use in a wide variety of applications. The authors investigate by numerical calculations and experimentally the effect of nonlinear pulse distortions on the operation of dielectric laser accelerators.

The relationship between superconductivity and charge density waves is one of the unresolved mysteries of high temperature cuprate superconductors. The authors investigate this relationship using multilayers of cuprates and manganites for which the charge and orbital order of the latter is controlled by chemical substitution.

Adhesion plays an essential role in a large variety of processes in different fields. In this study, graphene nanoscrolls and pristine graphene are studied and compared, finding that the former presents significantly enhanced adhesion properties.

A phonon laser is the mechanical equivalent of an optical laser and has potential application in precise, non-destructive imaging techniques. The authors theoretically demonstrate that the features of a phonon laser can be controlled by the polarization of light.

Femtosecond lasers are used for a vast variety of applications where super resolution is required. The authors present gain-switched semiconductor-laser operations using an extreme optical pump allowing them to generate ultrashort, high power pulses.

An understanding of the interlayer electronic interactions in two dimensional heterostructures is required to advance their potential applications in low-power electronics. The authors develop a transport theory incorporating charge inhomogeneities in order to explain the behavior of Coulomb drag observed experimentally in double layer heterostructures.

There are many different types of superconducting phases each with unique properties and mechanisms behind their superconductivity. The authors investigate a type of superconductor called an Ising superconductor and demonstrate that by application of a magnetic field they can be driven into a nodal superconducting phase.

Systems which sustain quasiparticle complexes can exhibit unique optical features and unusual physical properties. Here the authors investigate highly doped bulk semiconductors and provide experimental evidence to suggest a new type of neutral, degenerate electron gas-stabilized quasiparticle which they term a collexon.

The discovery of topological insulators has given rise to a flourishing field dedicated to the investigation of the topological state of matter. This manuscript contributes to this field by introducing the idea of a topoelectrical circuit, whereby an assembly of conventional circuit elements realises various topological band structures.

Organic field-effect transistors are expected to become a key component of future integrated circuits. The authors seek to improve the performance of devices based on these materials by investigating the effect of flicker noise in a solution-processed organic single crystal transistor.

Skyrmions are topologically protected magnetic chiral spin textures which are considered potential candidates for low power spintronic devices. The authors investigate the dynamics of skyrmions in a tilted magnetic field and demonstrate the determination of the chirality.