Newsfeeds
Nature Physics
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Non-Hermitian dynamics and non-reciprocity of optically coupled nanoparticles
Nature Physics, Published online: 25 July 2024; doi:10.1038/s41567-024-02589-8
The tuneable and nonlinear nature of the interactions between two optically levitated nanoparticles allows the observation of the system’s non-Hermitian dynamics and a mechanical lasing transition.
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Exponentially tighter bounds on limitations of quantum error mitigation
Nature Physics, Published online: 25 July 2024; doi:10.1038/s41567-024-02536-7
Error mitigation has helped improve the performance of current quantum computing devices. Now, a mathematical analysis of the technique suggests its benefits may not extend to larger systems.
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Onwards and upwards
Nature Physics, Published online: 25 July 2024; doi:10.1038/s41567-024-02593-y
Experiments show that the shape of a biofilm, not just its cell doubling time, significantly impacts its expansion rate. This insight could guide new strategies for controlling biofilm growth.
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Non-reciprocity forces nanoparticles into lockstep
Nature Physics, Published online: 25 July 2024; doi:10.1038/s41567-024-02588-9
Tuneable optical control enables the investigation of collective phases of motion in a pair of coupled levitated mechanical oscillators.
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PT-like phase transition and limit cycle oscillations in non-reciprocally coupled optomechanical oscillators levitated in vacuum
Nature Physics, Published online: 25 July 2024; doi:10.1038/s41567-024-02590-1
Non-reciprocal interactions between two optically levitated nanoparticles allow the observation of non-Hermitian dynamics and a mechanical lasing transition, and suggest applications in optomechanical sensing.
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Collective motion of electrons captured at the atomic scale
Nature Physics, Published online: 22 July 2024; doi:10.1038/s41567-024-02553-6
Many 2D or 1D materials feature fascinating collective behaviour of electrons that competes with highly localized interactions at atomic defects. By combining terahertz spectroscopy with scanning tunnelling microscopy, the ultrafast motion of these collective states can be captured with atomic spatial resolution, enabling the observation of electron dynamics at their intrinsic length and time scale.
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Transverse emittance reduction in muon beams by ionization cooling
Nature Physics, Published online: 17 July 2024; doi:10.1038/s41567-024-02547-4
Current muon beams have a phase-space volume that is too large for applications in muon colliders. Now, the reduction in the beam’s transverse emittance when passed through different absorbers in ionization cooling experiments is quantified.
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Water dropped in the deep end
Nature Physics, Published online: 16 July 2024; doi:10.1038/s41567-024-02596-9
Water dropped in the deep end