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Efficient topological materials discovery using symmetry indicators

Nature Physics - Δευ, 11/02/2019 - 00:00

Efficient topological materials discovery using symmetry indicators

Efficient topological materials discovery using symmetry indicators, Published online: 11 February 2019; doi:10.1038/s41567-019-0418-7

Symmetry labels of materials under certain space groups can be used to indicate their band topology. Integrating that into first-principles band-structure calculations, new topological materials with a diversity of topological phenomena are discovered.

Quantum error correction and universal gate set operation on a binomial bosonic logical qubit

Nature Physics - Δευ, 11/02/2019 - 00:00

Quantum error correction and universal gate set operation on a binomial bosonic logical qubit

Quantum error correction and universal gate set operation on a binomial bosonic logical qubit, Published online: 11 February 2019; doi:10.1038/s41567-018-0414-3

Repeated error correction creates a logical qubit encoded in the hybrid state of a superconducting circuit and a bosonic cavity, which is shown to be fully controllable under a universal single-qubit gate set.

Proton superfluidity and charge radii in proton-rich calcium isotopes

Nature Physics - Δευ, 11/02/2019 - 00:00

Proton superfluidity and charge radii in proton-rich calcium isotopes

Proton superfluidity and charge radii in proton-rich calcium isotopes, Published online: 11 February 2019; doi:10.1038/s41567-019-0416-9

Spectral study on 36,37,38Ca isotopes and calculations based on density functional theory reveal the interplay between charge radii and nucleonic pairing correlations.

Axial-field-induced chiral channels in an acoustic Weyl system

Nature Physics - Δευ, 11/02/2019 - 00:00

Axial-field-induced chiral channels in an acoustic Weyl system

Axial-field-induced chiral channels in an acoustic Weyl system, Published online: 11 February 2019; doi:10.1038/s41567-019-0415-x

Axial fields couple to the states of different chiralities with opposite signs. In an acoustic Weyl system, the implementation of such fields induces chiral Landau levels, which is now observed experimentally.

Spin–phonon interactions in silicon carbide addressed by Gaussian acoustics

Nature Physics - Δευ, 11/02/2019 - 00:00

Spin–phonon interactions in silicon carbide addressed by Gaussian acoustics

Spin–phonon interactions in silicon carbide addressed by Gaussian acoustics, Published online: 11 February 2019; doi:10.1038/s41567-019-0420-0

The authors use surface acoustic waves, focused in a Gaussian geometry, to manipulate the spin state of divacancy defects in silicon carbide via mechanical driving. They demonstrate that shear strain is important in controlling the spin transitions.

Scaling behaviour in steady-state contracting actomyosin networks

Nature Physics - Δευ, 04/02/2019 - 00:00

Scaling behaviour in steady-state contracting actomyosin networks

Scaling behaviour in steady-state contracting actomyosin networks, Published online: 04 February 2019; doi:10.1038/s41567-018-0413-4

Actomyosin networks with rapid turnover self-organize within droplets, forming a dynamic steady-state with persistent flows. The networks exhibit homogeneous, density-independent contraction, implying that active stress scales with viscosity.

Turbulent beginnings

Nature Physics - Δευ, 04/02/2019 - 00:00

Turbulent beginnings

Turbulent beginnings, Published online: 04 February 2019; doi:10.1038/s41567-019-0439-2

An inspired experimental approach sheds light on the formation of active turbulence in a system of microtubules and molecular motors. The emergent scaling behaviour takes us a step closer to understanding how activity begets turbulence.

Selection mechanism at the onset of active turbulence

Nature Physics - Δευ, 04/02/2019 - 00:00

Selection mechanism at the onset of active turbulence

Selection mechanism at the onset of active turbulence, Published online: 04 February 2019; doi:10.1038/s41567-018-0411-6

Experiments on microtubule-based nematics, together with active gel theory, suggest that the length scale associated with active turbulence is selected at its onset—balancing activity with the stabilizing effects of nematic elasticity and geometry.

Quantum stochastic resonance in an a.c.-driven single-electron quantum dot

Nature Physics - Δευ, 04/02/2019 - 00:00

Quantum stochastic resonance in an a.c.-driven single-electron quantum dot

Quantum stochastic resonance in an a.c.-driven single-electron quantum dot, Published online: 04 February 2019; doi:10.1038/s41567-018-0412-5

Quantum stochastic resonance, in which the quantum fluctuation represents the noise needed to amplify an otherwise weak signal, is reported in the charging and discharging of a single-electron quantum dot.

Noise put to use

Nature Physics - Δευ, 04/02/2019 - 00:00

Noise put to use

Noise put to use, Published online: 04 February 2019; doi:10.1038/s41567-019-0442-7

Through stochastic resonance, noise-driven fluctuations make an otherwise weak periodic signal accessible. Experiments have now reported quantum stochastic resonance, which arises from intrinsic quantum fluctuations rather than external noise.

Explore the bad

Nature Physics - Παρ, 01/02/2019 - 00:00

Explore the bad

Explore the bad, Published online: 01 February 2019; doi:10.1038/s41567-019-0433-8

Explore the bad

The long and short of it

Nature Physics - Παρ, 01/02/2019 - 00:00

The long and short of it

The long and short of it, Published online: 01 February 2019; doi:10.1038/s41567-019-0429-4

The long and short of it

Searching for civilization

Nature Physics - Παρ, 01/02/2019 - 00:00

Searching for civilization

Searching for civilization, Published online: 01 February 2019; doi:10.1038/s41567-019-0423-x

Searching for civilization

Two at once

Nature Physics - Παρ, 01/02/2019 - 00:00

Two at once

Two at once, Published online: 01 February 2019; doi:10.1038/s41567-019-0430-y

Two at once

A problem shared is a problem halved

Nature Physics - Παρ, 01/02/2019 - 00:00

A problem shared is a problem halved

A problem shared is a problem halved, Published online: 01 February 2019; doi:10.1038/s41567-019-0434-7

After much debate about what should be done about sharing of scientific data and source code, practical solutions are still hard to come by. How should the physics community move forward?

Common ground

Nature Physics - Παρ, 01/02/2019 - 00:00

Common ground

Common ground, Published online: 01 February 2019; doi:10.1038/s41567-019-0432-9

Common ground

Chilling motion

Nature Physics - Παρ, 01/02/2019 - 00:00

Chilling motion

Chilling motion, Published online: 01 February 2019; doi:10.1038/s41567-019-0431-x

Chilling motion

Eye in the sky

Nature Physics - Παρ, 01/02/2019 - 00:00

Eye in the sky

Eye in the sky, Published online: 01 February 2019; doi:10.1038/s41567-019-0422-y

Eye in the sky

Spatiotemporal signal propagation in complex networks

Nature Physics - Δευ, 28/01/2019 - 00:00

Spatiotemporal signal propagation in complex networks

Spatiotemporal signal propagation in complex networks, Published online: 28 January 2019; doi:10.1038/s41567-018-0409-0

Complex networks with identical topology may exhibit different dynamics. A systematic analysis of signal propagation in networks reveals the existence of three specific dynamic regimes that connect topological features to dynamic patterns.

Propagation patterns unravelled

Nature Physics - Δευ, 28/01/2019 - 00:00

Propagation patterns unravelled

Propagation patterns unravelled, Published online: 28 January 2019; doi:10.1038/s41567-019-0424-9

From disease proliferation to cell functioning, spreading dynamics on networks impact many collective phenomena. The joint contributions of the interaction structure and local dynamics have now been disentangled, revealing three distinct types of spreading pattern.

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