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Local magnetometry measurements on a magnetic Chern insulator suggest that the Berry curvature of the topological band — responsible for the intrinsic magnetism — also enables ultra-low current switching of the magnetization.
Controlling the response of a material to light at the single-atom level is a key factor for many quantum technologies. An experiment now shows how to control the optical properties of an atomic array by manipulating the state of a single atom.
Biomolecular condensates compartmentalize and concentrate cellular components without the delimitation of a lipid membrane. The protein VASP is now shown to condense, resulting in the reorganization of actin, a key component of the cell cytoskeleton.
Two superconductors connected by a weak link form a Josephson junction, a nonlinear circuit element at the heart of many quantum devices. Quantized electrical current steps that were predicted decades ago have now been observed experimentally.
Boson sampling is a benchmark problem for photonic quantum computers and a potential avenue towards quantum advantage. A scheme to realize a boson sampler based on the vibrational modes in a chain of trapped ions instead has now been demonstrated.
Oil-coated bubbles bursting across interfaces enhance aerosol formation and transmission by producing jets that are smaller and faster than those formed by pristine bubbles.
Quantum correlations between entangled particles can be used by parties in a network to verify that they share a specific quantum state. A proposal for network-assisted self-testing generalizes this approach to states of any number of qubits.
Quantum mechanical fluctuations of the electromagnetic field in a vacuum between two close together objects result in an attractive force. Now, it has been experimentally shown that by exploiting a similar repulsive interaction, attraction between objects can be modulated simply by tuning temperature.
Phase-change processes, such as condensation or freezing, are known to compromise a surface’s water-repelling capability. It now turns out that tuning the freezing conditions can enable the spontaneous expulsion of water droplets.
‘Squeezing’ of light can be used to alter the distribution of quantum noise to benefit quantum sensing and other applications. An improved design for a microwave photon squeezer provides high performance over a large bandwidth.
Ten years after the discovery of the Higgs boson, the ATLAS Collaboration probes its underlying mechanism, the electroweak symmetry breaking, by measuring the scattering of Z bosons, one of the mediators of the weak interactions.
Despite its technological importance, there remain gaps in our understanding of silicon’s electronic behaviour, especially at low temperatures. Measurements close to a metal–insulator transition show signs of a collective many-body quantum state.
Strongly laser-driven quantum correlated many-body systems lead to the generation of light with exotic quantum features — the quantumness of a many-body system is imprinted on the state of the emitted light.
Disturbances in the orientation of magnetization in a magnet can propagate as spin waves or magnons. A design that makes it possible to optically excite nanoscale spin waves offers a route to developing miniaturized spin-based devices.
Tides not only affect ocean dynamics but also influence the Earth’s magnetosphere. Satellite observations have now revealed evidence of tidal effects in the Earth’s plasmasphere correlated with Moon phases.
By recovering energy from a relativistically accelerated electron beam in a multiturn configuration, a reduction of radiofrequency power has been demonstrated. This is a milestone toward more efficient and better performing accelerators.
Reconstructing the motional quantum states of massive particles has important implications for quantum information science. Motional tomography of a single atom in an optical tweezer has now been demonstrated.
