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Directive and scannable radiation patterns beyond the microwave region are desirable but leaky-wave antennas in the terahertz and optical range are unavailable. Here, Memarian and Eleftheriades demonstrate continuously scanned leaky-wave radiation from the interface of a photonic crystal with a Dirac-type dispersion.

Non-Hermitian Hamiltonians have attracted significant attention because of the unconventional wave-dynamic effects they allow. Here, Hahn et al. report reconfigurable non-Hermitian photonic lattices that permit versatile control of real and imaginary sub-lattices in the optical spectral domain.

Non-Abelian lattice gauge fields in photonic synthetic frequency dimensions can be used to study lattice physics in a scalable and programmable way.

The quantum noise of Kerr combs is found to exhibit oscillatory lattice dynamics through state transitions, with implications for squeezing and comb formation.

Passive, lossy materials with positive index at real frequencies can be used to realize optical antimatter under complex frequency excitation. Our approach enables arbitrary complex \(\epsilon ,\,\mu\) to be achieved.

Practical quantum computers will require protocols to carry out computation on encrypted data, just like their classical counterparts. Here, the authors present such a protocol that allows an untrusted server to implement universal quantum gates on encrypted qubits without learning about the inputs.

Chromophore supramolecular assemblies have long been studied for their exotic photophysical properties arising from their local geometry and long-range sensitive excitonic couplings. Now a high-resolution structure of a model nanotubular system has revealed a uniform brick-layer molecular arrangement and a non-biological supramolecular motif—interlocking sulfonates—enabling clear understanding of supramolecular structure–excitonic property relationships.

The advantage of living in cities compared with rural areas with respect to height and BMI in children and adolescents has generally become smaller globally from 1990 to 2020, except in sub-Saharan Africa.

Analysis of HbA1c and FPG levels across 117 population-based studies demonstrates regional variation in prevalence of previously undiagnosed screen-detected diabetes using one or both measures and suggests that use of elevated FPG alone could underestimate diabetes prevalence in low- and middle-income countries.

The crystal symmetry of a material impacts on its electronic structure and can lead to a range of interesting non-trivial topological phases and properties. Here, the authors theoretically study thin films of rhombohedral graphite and investigate the Berry curvature induced anomalous transport properties.

Studies of first-order phase transitions in quantum simulators have so far been restricted to the weakly interacting regime. A tunable discontinuous phase transition has now been realized with strongly correlated atoms in a driven optical lattice.

A study establishes a scalable approach to engineer and characterize a many-body-localized discrete time crystal phase on a superconducting quantum processor.

Laser cooling has not yet been extended to molecules because of their complex internal structure. At present, the only technique for producing ultracold molecules is to bind ultracold alkali atoms to produce bialkali molecules. These authors experimentally demonstrate laser cooling of the polar molecule strontium monofluoride, reaching temperatures of a few millikelvin or less. The technique should allow the production of molecules at microkelvin temperatures for species that are chemically distinct from bialkalis.

Similar to atoms in cold gases, exciton–polaritons in semiconductor microcavities can undergo Bose–Einstein condensation. Now, formation of a condensate in an excited orbital state has been observed in such a system, underlining the potential of exciton–polariton condensates to emulate condensed-matter physics.

Quantum error correction will be the key to allow large-scale quantum computing operations in the future. Here, the authors use a superconducting qubit system to demonstrate quantum error correction of a distance-three logical qubit in the heavy-hexagon subsystem code.

Scanning tunnelling microscopy shows how the interaction between electrons in graphene and atomic vacancies in a copper substrate produces Kekulé ordering — an electronic phase that breaks chiral symmetry.

Indium-doped cadmium oxide performs polarization switching on a subpicosecond timescale.

LiDARs exploiting quantum correlations provide enhancement in noise resilience and sensitivity, but high-power classical sources offer much higher operating distances. Here, the authors show how to exploit high power classical time-frequency correlations to keep the best of both worlds.

From 1980 to 2018, the levels of total and non-high-density lipoprotein cholesterol increased in low- and middle-income countries, especially in east and southeast Asia, and decreased in high-income western countries, especially those in northwestern Europe, and in central and eastern Europe.

It is now shown that phonons can be coherently transferred between two nanomechanical resonators. The technique of controlling the coupling between nanoscale oscillators using a piezoelectric transducer is useful for manipulating classical oscillations, but if extended to the quantum regime it could also enable entanglement of macroscopic mechanical objects.

Genome-wide association analyses of magnetic resonance imaging data describe the genetic architecture of 13 cortical phenotypes at both global and regional levels, implicating neurodevelopmental and constrained genes.

There is no universal reference material to develop extracellular vesicle (EV) separation methods and carry out calibration and normalization. Here the authors use HIV-derived gag proteins to assemble recombinant fluorescent EV as a trackable reference material resembling the physical and biochemical properties of sample EV.

Exposure to high-energy heavy ions creates defects in semiconductors, modifying their electronic properties. Here, the authors demonstrate the formation of color centers in nitrogen-doped diamond using 1 GeV gold and uranium ions, revealing isolated quasi-1D NV-center chains with promising electron spin properties for quantum sensing and computing applications.

In non-Hermitian systems, spectral degeneracies can arise that can cause unusual, counter-intuitive effects; here exciton-polaritons—hybrid light–matter particles—within a semiconductor microcavity are found to display non-trivial topological modal structure exclusive to such systems.

Sebenius et al. present Morphometric INverse Divergence (MIND), a robust MRI-based metric of similarity between brain areas that reflects biological factors that define cortical network architecture, such as gene expression and axonal connectivity.

Lessons learned from coherent phenomena in biological photosynthetic systems may be useful to improve energy- and charge-transport in disordered materials. This Review describes coherence and its potential beneficial effects in photovoltaics.

Through use of the anatomical similarity, structural MRI analytics are now enabling the network organization of individual brains to be mapped. In this Review, Sebenius, Dorfschmidt et al. examine this field of structural MRI similarity network analysis.

Using the lifespan brain chart and two large-scale cross-cultural consortia (ABIDE and CABIC), we disentangle the heterogeneity of brain morphology in ASD into two structural impairment pathways that could disrupt sensory to association functions.