Nature Physics, Published online: 21 June 2024; doi:10.1038/s41567-024-02545-6
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.
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- Quantum squeezing in a nonlinear mechanical oscillator
- Wave-momentum shaping for moving objects in heterogeneous and dynamic mediaNature Physics, Published online: 21 June 2024; doi:10.1038/s41567-024-02538-5 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.
- Collective flow of fermionic impurities immersed in a Bose–Einstein condensateNature Physics, Published online: 21 June 2024; doi:10.1038/s41567-024-02541-w 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.
- Wavefronts wield tweezers amid disorderNature Physics, Published online: 21 June 2024; doi:10.1038/s41567-024-02548-3 Acoustic and optical traps enable contactless manipulation of objects, but trapping has been limited to homogeneous environments. Wavefront shaping now extends this versatile manipulation tool to dynamic and disordered media.
- Information gets into the flow with wave scatteringNature Physics, Published online: 21 June 2024; doi:10.1038/s41567-024-02550-9 140 years ago, John Henry Poynting demonstrated “by what paths and according to what law” electromagnetic energy travels. Theory and experiment now also reveal how waves acquire information as they scatter through their environment.
- Critical delay accumulationNature Physics, Published online: 20 June 2024; doi:10.1038/s41567-024-02507-y In many schedule-based systems, timeliness is paramount. A recent study provides insights into delay accumulation in networks, revealing a phase transition with connections to the physics of interfaces.
- Geometry-driven migration efficiency of autonomous epithelial cell clustersNature Physics, Published online: 19 June 2024; doi:10.1038/s41567-024-02532-x The collective migration of cell clusters is modulated by substrate geometry through a combination of velocity and polarity alignment.
- Timeliness criticality in complex systemsNature Physics, Published online: 19 June 2024; doi:10.1038/s41567-024-02525-w 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.
