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Experiments on cooperative radiative decay typically involve rapidly escaping photons. Collective emission dynamics have now been studied in an array of quantum emitters interacting via atomic matter waves in a novel regime of slow propagation.
Experimental evidence of nematic-fluctuation-mediated superconductivity has been observed in an iron-based superconductor near the quantum critical point.
Filamentary eruptions from the plasma edge in fusion devices pose a critical threat to their integrity. The identification of magnetic islands at the top of the edge explains how these eruptions are suppressed by resonant magnetic perturbations.
Superconductivity that is mediated by fluctuations of a nematic electronic order has not been experimentally demonstrated. Now an analysis of the symmetry of the superconducting gap in doped FeSe provides evidence of this phenomenon.
Complex oxides have competing phases with different spin, electronic and orbital order. Now it has been shown that growing thin films on different facets of a low-symmetry substrate can be used to control the phase of the ground state.
The 2024 Nobel prize for Physics was awarded for foundational contributions to the development of artificial neural networks. The award reflects a shift in how we understand boundaries between scientific fields — or whether such boundaries are still useful at all.
After 30 years of extensive research, the nature of the unconventional superconductivity in Sr2RuO4 is still not fully understood. This Perspective summarizes the controversies surrounding this and discusses future research.
Optical waveguides that route light are a core technology of modern photonics and the bedrock of the global communications network. A surprising diffusion mechanism for guiding light has now been identified, and it is strangely close to home.
The ground state of electrons in charge-neutral graphene in a strong magnetic field has not been conclusively identified. Thermal transport measurements narrow down the possible candidates, with evidence that the ground state does not conduct heat.
Waveguides—often based on total internal reflection—underpin many photonic technologies, including fibre networks for broadband communications. Now a different type of waveguide based on physical diffusion in a scattering medium is demonstrated.
Extending topological braids of complex energy bands to non-Hermitian systems of magnons—the quanta of spin waves—is a crucial step in the development of spin-based topological devices. This has now been experimentally demonstrated.
Superconducting qubits can be fabricated and controlled in large numbers, which makes them an appealing platform for quantum simulations of many-body physics. However, a scalable way of implementing electromagnetism has been lacking — until now.
Arrays of superconducting transmon qubits can be used to study the Bose–Hubbard model. Synthetic electromagnetic fields have now been added to this analogue quantum simulation platform.
Nuclear explosives are the most promising method for steering a large asteroid away from Earth and mitigating an impact. Laboratory experiments with X-ray pulses have now mimicked such an event, demonstrating how efficient this technique is.
The ground state of charge-neutral bilayer graphene in a strong magnetic field is not fully determined. Now thermal transport measurements show an absence of heat flow through that state, suggesting that its collective excitations could be gapped.
Charge-neutral graphene in the quantum Hall regime is known to be an insulator. Now thermal transport measurements show that it also does not conduct heat. This sheds light on the nature of the ground state in this regime.
