Nature Physics, Published online: 12 May 2026; doi:10.1038/s41567-026-03288-2
Non-Hermitian systems support non-trivial topological effects, yet eigenvalue braiding remains difficult to control and observe. Now, active tuning of laser modes enables programmable and directly observable braiding on an integrated photonic chip.
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- Laser mode braiding on a chip
- Higher-order harmonics in Josephson tunnel junctions due to series inductanceNature Physics, Published online: 12 May 2026; doi:10.1038/s41567-026-03285-5 Deviations from the textbook current–phase relationship of a Josephson junction can arise from the intrinsic physics of the junction, but also from the inductance of metallic traces. Now a scheme has been developed to distinguish these cases.
- Preserved rotations in solidsNature Physics, Published online: 12 May 2026; doi:10.1038/s41567-026-03248-w A seemingly still crystal is alive with synchronized atomic motions. Now, angular momentum has been observed flowing coherently between distinct lattice vibrational modes, revealing a hidden propagation of rotational features inside the crystal.
- Correlated insulator in the kagome flat band of a two-dimensional electrostatic crystalNature Physics, Published online: 11 May 2026; doi:10.1038/s41567-026-03291-7 A tunable artificial crystal in a shallow GaAs quantum well is shown to enable interaction-driven insulating behaviour. Electrostatic control tunes the band structure from graphene-like to kagome-like bands.
- Scalable generation of massive Schrödinger cat states via quantum tunnellingNature Physics, Published online: 11 May 2026; doi:10.1038/s41567-026-03281-9 Massive spatial superpositions are a resource for quantum interferometry, but it has been hard to generate them beyond single atoms. Now spatially entangled massive states are realized through the tunnelling of atomic clusters in optical lattices.
- Publisher Correction: Lifetime of the singly charged <sup>229</sup>Th nuclear isomerNature Physics, Published online: 08 May 2026; doi:10.1038/s41567-026-03324-1 Publisher Correction: Lifetime of the singly charged 229Th nuclear isomer
- Observation of propagating collective spin–valley modes in twisted WSe<sub>2</sub>Nature Physics, Published online: 07 May 2026; doi:10.1038/s41567-026-03280-w Transport of charges has been widely studied in two-dimensional moiré materials. However, charge-neutral collective excitations are difficult to access, especially when they are decoupled from charged quasiparticles. Now they are observed in a moiré homobilayer.
- Amplitude fluctuations reshape the lattice chiral response in a ferroaxial electronic crystalNature Physics, Published online: 06 May 2026; doi:10.1038/s41567-026-03253-z Helicity-resolved Raman spectroscopy reveals dynamical coupling between charge-density-wave amplitude fluctuations and symmetry-distinct phonons in a ferroaxial van der Waals crystal. This resonant dressing amplifies the material’s planar chiral lattice response through the underlying electronic order.
