Nature Physics, Published online: 02 June 2025; doi:10.1038/s41567-025-02929-2
Clock precision is thought to be fundamentally limited by entropy production in out-of-equilibrium systems. A theoretical work now introduces a quantum clock design where precision grows exponentially with dissipation.
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- Precision is not limited by the second law of thermodynamics
- A resonant valence bond spin liquid in the dilute limit of doped frustrated Mott insulatorsNature Physics, Published online: 29 May 2025; doi:10.1038/s41567-025-02923-8 The concept of resonant valence bond phases has inspired many areas of condensed matter physics, but few realistic models have been identified. Now an analytical solution of such a phase has been found for pyrochlore and related lattices.
- Critical fermions are universal embezzlersNature Physics, Published online: 27 May 2025; doi:10.1038/s41567-025-02921-w One-dimensional critical fermionic models play an important role in many-body physics. Now it has been shown that any entangled state can be extracted from a bipartitioned critical fermion chain with an arbitrarily small change to the initial state.
- Optomechanical self-organization in a mesoscopic atom arrayNature Physics, Published online: 26 May 2025; doi:10.1038/s41567-025-02916-7 Investigating mesoscopic systems can offer insights into the crossover between few-body and many-body regimes. Atomic arrays inside an optical cavity are now shown to enable the controlled study of critical properties on mesoscopic scales.
- Perturbations in out-of-equilibrium quantum fluids diffuse rather than propagateNature Physics, Published online: 26 May 2025; doi:10.1038/s41567-025-02913-w Symmetry breaking is routinely observed in isolated systems, where perturbations propagate through the system. For out-of-equilibrium systems, however, perturbations are predicted to diffuse; and this key signature of spontaneous symmetry breaking has now been observed in a polariton quantum fluid.
- Robust Min protein oscillations revealed in living bacterial cellsNature Physics, Published online: 26 May 2025; doi:10.1038/s41567-025-02879-9 Bacteria can sustain spatial protein oscillations for a remarkably wide range of protein concentrations. The robustness arises from a conformational switch of a key protein between latent versus active states.
- Watch them growNature Physics, Published online: 23 May 2025; doi:10.1038/s41567-025-02924-7 Quasicrystals were discovered by chance about 40 years ago, and it has largely been a matter of luck to find new ones since. Now, an approach has been found to grow colloidal quasicrystals by turning a dial while directly observing them with an optical microscope.
- Long optical coherence times in a rare-earth-doped antiferromagnetNature Physics, Published online: 22 May 2025; doi:10.1038/s41567-025-02920-x Solid-state quantum devices can suffer from decoherence caused by fluctuating electron spins in the surrounding material. Operating in a regime where the electron spins become magnetically ordered produces substantially longer coherence times.
