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1 A coherent nanomechanical oscillator driven by single-electron tunnelling 2019-10-15             

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Nature Physics, Published online: 14 October 2019; doi:10.1038/s41567-019-0683-5

In a nanobeam that is strongly coupled to a single-electron transistor, electron tunnelling back-action induces self-sustaining mechanical oscillations. This oscillator can be compared to a phonon laser and can be stabilized.

2 Jigsaw puzzle design of pluripotent origami 2019-10-15             

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Nature Physics, Published online: 14 October 2019; doi:10.1038/s41567-019-0677-3

The crease patterns for origami-based mechanical metamaterials can fold into myriad 3D shapes, but predicting foldability is no simple task. A framework for designing foldable patterns offers a neat alternative to extensive computer optimization.

3 Light emission based on nanophotonic vacuum forces 2019-10-15             

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Nature Physics, Published online: 14 October 2019; doi:10.1038/s41567-019-0672-8

Vacuum fluctuations in the vicinity of nanophotonic structures can lead to the conversion of a free electron into a polariton and a high-energy photon, whose frequency can be controlled by the electromagnetic properties of the nanostructure.

4 A fold strategy 2019-10-15             

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Nature Physics, Published online: 14 October 2019; doi:10.1038/s41567-019-0684-4

It is generally difficult to know in advance if a sheet of paper can be folded into an origami shape, but for quadrilateral crease patterns a tiling approach can identify all possible ways of folding them.

5 Author Correction: Femtosecond-resolved observation of the fragmentation of buckminsterfullerene following X-ray multiphoton ionization 2019-10-11             

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Nature Physics, Published online: 10 October 2019; doi:10.1038/s41567-019-0706-2

Author Correction: Femtosecond-resolved observation of the fragmentation of buckminsterfullerene following X-ray multiphoton ionization

6 Microwave-to-optics conversion using a mechanical oscillator in its quantum ground state 2019-10-08             

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Nature Physics, Published online: 07 October 2019; doi:10.1038/s41567-019-0673-7

Electro-optomechanical conversion between optical and microwave photons is achieved with minimal added noise by cooling the mechanical oscillator to its quantum ground state. This has potential for future coherence-preserving transduction.

7 Atomic-scale fragmentation and collapse of antiferromagnetic order in a doped Mott insulator 2019-10-08             

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Nature Physics, Published online: 07 October 2019; doi:10.1038/s41567-019-0671-9

Spin-polarized tunnelling data show that the breakdown of antiferromagnetic order and the collapse of the spectral gap are not correlated in Sr2IrO4. This indicates that short-range magnetic correlations are not behind the emergence of the pseudogap.

8 Vibrational spectroscopy at atomic resolution with electron impact scattering 2019-10-08             

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Nature Physics, Published online: 07 October 2019; doi:10.1038/s41567-019-0675-5

Conventional on-axis electron energy-loss spectroscopy can detect vibrational modes in crystals and amorphous solids at atomic resolution by isolating the specific signal from the background signal and the dipole contributions.

9 Cooling and self-oscillation in a nanotube electromechanical resonator 2019-10-08             

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Nature Physics, Published online: 07 October 2019; doi:10.1038/s41567-019-0682-6

The back-action of electrons can cool a nanomechanical oscillator to a few-quantum state when a current flows through a suspended nanotube. The electron back-action, which is attributed to an electrothermal effect, also induces self-oscillations.

10 Quantum state tomography across the exceptional point in a single dissipative qubit 2019-10-08             

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Nature Physics, Published online: 07 October 2019; doi:10.1038/s41567-019-0652-z

The dynamics of a single dissipative qubit undergoing non-Hermitian quantum dynamics in the vicinity of an exceptional point is experimentally studied in a superconducting transmon circuit.

 
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