Gaussian boson sampling reproduces distributions that are hard to calculate classically and were claimed to show quantum advantage in the noiseless limit. But now a classical algorithm is shown to reproduce experimental results when noise is large.

The complex interactions arising in mixtures of bosons and fermions make it hard to understand their coupled dynamics. The collective oscillations of fermions embedded in a boson condensate have now been characterized in an ultracold-atom experiment.

Although manipulation of objects using light and sound waves is an established technique, it has so far been confined to static environments. Iterative tailoring of acoustic far fields now allows control of objects in disordered and dynamic media.

Mechanical modes promise applications in continuous-variable quantum information processing, but only if the final two elements—squeezing and nonlinearity—are achieved. Experiments with an oscillator coupled to a transmon qubit now achieve this.

A semiconductor quantum dot can passively mediate interactions between two photons, enabling the creation of entangled photon states.

Timeliness is a crucial property for the optimal functioning of socio-technical systems where delays can propagate. Now it is shown that a stylized model of delay propagation on temporal networks shows a phase transition that can trigger avalanches.

Construction of the European Spallation Source began 10 years ago. Upon completion, its advanced technology and sustainable design will herald a new era for neutron scattering experiments.

The packaging of modern-day light sources is crammed with metrics. Paul Wiecki enlightens us about two: brightness and colour-rendering ability.