Nature Physics, Published online: 04 March 2026; doi:10.1038/s41567-026-03200-y
Irreversibility is linked to the production of entropy and relaxation to thermal equilibrium. Entropy production has now been measured at the nanoscale using quantum dots.
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- Dots of entropy
- A universal scheme to self-test any quantum state or measurementNature Physics, Published online: 03 March 2026; doi:10.1038/s41567-026-03181-y Self-testing makes it possible to certify quantum properties without having to trust measurement or communication devices. A protocol has now been developed that allows the self-testing of any quantum state or measurement.
- Quantum-limited metrology of macroscopic spin ensemblesNature Physics, Published online: 25 February 2026; doi:10.1038/s41567-026-03187-6 Quantum fluctuations have been detected in a macroscopic, millimole-scale solid-state spin ensemble without the use of external excitations, enabling non-invasive quantum sensing techniques.
- Sensing with discrete time crystalsNature Physics, Published online: 23 February 2026; doi:10.1038/s41567-025-03163-6 It is shown that an a.c. field exponentially extends the lifetime of a prethermal time crystal realized with nuclear spins in diamond, enabling a narrowband detection of magnetic fields.
- A crowd of marine embryos self-assembles into a living solidNature Physics, Published online: 23 February 2026; doi:10.1038/s41567-026-03190-x Marine embryos are usually studied in isolation. But when starfish embryos are in a crowd, they self-assemble into living solids with unexpected dynamics, revealing how simple organisms can help understand physics far from equilibrium.
- How light scattering loses its boostNature Physics, Published online: 20 February 2026; doi:10.1038/s41567-025-03156-5 In a Bose–Einstein condensate, bosonic stimulation enhances light scattering. An experiment now reveals that interatomic interactions diminish this effect, offering a probe of quantum correlations.
- Fatigue failure in glasses under cyclic shear deformationNature Physics, Published online: 20 February 2026; doi:10.1038/s41567-026-03174-x Fatigue failure refers to a material’s loss of rigidity after repeated application of stress or deformation. Simulations of model glasses now show that failure times display a power-law divergence and a strong dependence on annealing.
- Suppression and enhancement of bosonic stimulation by atomic interactionsNature Physics, Published online: 20 February 2026; doi:10.1038/s41567-025-03155-6 Bosonic bunching of non-interacting atoms enhances atom–light scattering. An experiment now shows that attractive atomic interactions enhance this scattering further, while repulsive ones can completely suppress bosonic stimulation.
