Nature Physics, Published online: 06 April 2026; doi:10.1038/s41567-026-03219-1
Controlling the rotational motion of nanoscale objects by trapping and cooling is a prerequisite for exploring quantum rotational phenomena. Now, two orthogonal librational modes of a levitated nanorotor are cooled into their quantum ground state.
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- Quantum ground-state cooling of two librational modes of a nanorotor
- A crystal of neutral excitonsNature Physics, Published online: 03 April 2026; doi:10.1038/s41567-026-03244-0 Interlayer excitons are neutral particles, which are prevalent in transition metal dichalcogenide heterostructures. Now, long-range repulsive interactions between these neutral particles leads to the formation of a crystal.
- Evidence for odd-parity superconductivity underpinned by antiferromagnetism in heavy-fermion metal YbRh<sub>2</sub>Si<sub>2</sub>Nature Physics, Published online: 03 April 2026; doi:10.1038/s41567-026-03247-x Odd-parity spin-triplet superconductivity remains difficult to establish experimentally. Now, several distinct magnetic-field-tuned superconducting states—including a possible topological helical phase—have been identified in YbRh2Si2.
- Wetting by active fluidsNature Physics, Published online: 03 April 2026; doi:10.1038/s41567-026-03208-4 Theoretical descriptions of surface wetting so far cover only equilibrium situations and therefore do not describe active matter. Now a formalism for the description of the wetting of a surface by self-propelled particles is presented.
- Frieze charge stripes in a correlated kagome superconductorNature Physics, Published online: 02 April 2026; doi:10.1038/s41567-026-03232-4 In a kagome superconductor, sublattice degrees of freedom are shown to govern a distinct density wave phase featuring chiral textures and symmetry properties that align with one of the fundamental frieze symmetry groups.
- Active assembly and non-reciprocal dynamics of elastic membranesNature Physics, Published online: 02 April 2026; doi:10.1038/s41567-026-03215-5 The microtubule–kinesin system is a well-known active matter system. Now it is shown that a microtubule-based active fluid can assemble adhesive non-thermal fibres into a membrane-like structure.
- A molecular probe for quantum metrologyNature Physics, Published online: 02 April 2026; doi:10.1038/s41567-026-03239-x Cavity-enhanced spectroscopy has now reached temperatures as low as 4 K — colder than most of space. This removes long-standing barriers in measuring hydrogen, which is a benchmark system for testing quantum theory and relevant for metrology.
- Low-overhead fault-tolerant quantum computation by gauging logical operatorsNature Physics, Published online: 02 April 2026; doi:10.1038/s41567-026-03220-8 Combining quantum error correction with gauge theory concepts from many-body physics enables the design of codes with improved resource requirements for fault-tolerant quantum computation.
