Nature Physics, Published online: 11 August 2025; doi:10.1038/s41567-025-02989-4
A massive phonon mode in a high-overtone bulk acoustic wave resonator has been laser cooled close to its ground state. Its robustness to decoherence establishes the potential of these devices for quantum technologies.
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- Optomechanical control of long-lived bulk acoustic phonons in the quantum regime
- Beet fringes and dimplesNature Physics, Published online: 11 August 2025; doi:10.1038/s41567-025-03006-4 Beet fringes and dimples
- Strongly interacting Hofstadter states in magic-angle twisted bilayer grapheneNature Physics, Published online: 11 August 2025; doi:10.1038/s41567-025-02997-4 Interacting electrons in Hofstadter bands can form symmetry-broken topological states. These are now revealed in magic-angle twisted bilayer graphene, and their properties are influenced by non-uniform quantum geometry.
- Multistable polar textures in geometrically frustrated nematic liquid crystalsNature Physics, Published online: 08 August 2025; doi:10.1038/s41567-025-02966-x Programmable topological dipoles could be used in stimuli-responsive materials. Now it is shown that confinement of an apolar liquid crystal results in controllable polar arrangements of elastic dipoles.
- Stable singular fractional skyrmion spin texture from the quantum Kelvin–Helmholtz instabilityNature Physics, Published online: 08 August 2025; doi:10.1038/s41567-025-02982-x The quantum Kelvin–Helmholtz instability can induce non-trivial topological excitations. Now a proof-of-principle experiment demonstrates the emergence of a stable singular fractional skyrmion spin texture originating from this quantum instability.
- Frustrated electron motion arising from the orbital configuration in a layered metalNature Physics, Published online: 07 August 2025; doi:10.1038/s41567-025-02962-1 Electron hopping on geometrically frustrated lattices leads to unusual, correlated phenomena, but materials whose structures match such lattices are rare. Now, in Pd5AlI2, frustrated electron motion is shown to emerge from the atomic orbital configuration, rather than the lattice geometry — which means the search space for unusual electronic structures and correlated behaviour can be broadened to materials with simpler, more common structures.
- Frustrated electron hopping from the orbital configuration in a two-dimensional latticeNature Physics, Published online: 07 August 2025; doi:10.1038/s41567-025-02953-2 Electron hopping in geometrically frustrated lattices can result in a rich variety of unusual behaviours. Now, the orbital arrangement in a van der Waals metal with a non-frustrated, primitive lattice is found to show similar effects.
- Fast optical control of a coherent hole spin in a microcavityNature Physics, Published online: 07 August 2025; doi:10.1038/s41567-025-02988-5 Spin–photon interfaces provide a connection between quantum information stored in atomic or electronic spins and optical communications networks. A quantum photon emitter with long-lived, controllable coherent spin has now been demonstrated.
