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Large curvature near a small gap

Nature Physics - Mon, 16/05/2022 - 00:00

Nature Physics, Published online: 16 May 2022; doi:10.1038/s41567-022-01623-x

The appearance of small local gaps in the electronic band structure of a topological semimetal is attributed to a hidden quasi-symmetry that produces a large Berry curvature.

Quasi-symmetry-protected topology in a semi-metal

Nature Physics - Mon, 16/05/2022 - 00:00

Nature Physics, Published online: 16 May 2022; doi:10.1038/s41567-022-01604-0

The concept of quasi-symmetry—a perturbatively small deviation from exact symmetry—is introduced and leads to topological materials with strong resilience to perturbations.

Evidence for spin swapping in an antiferromagnet

Nature Physics - Mon, 16/05/2022 - 00:00

Nature Physics, Published online: 16 May 2022; doi:10.1038/s41567-022-01608-w

Electrical readout of the state of an antiferromagnet is an important goal for spintronic applications. Now, detection of the electrical voltage created by a thermal gradient in a canted antiferromagnet suggests a route for achieving this goal.

Return of the bats

Nature Physics - Fri, 13/05/2022 - 00:00

Nature Physics, Published online: 13 May 2022; doi:10.1038/s41567-022-01618-8

Return of the bats

A net of networks

Nature Physics - Fri, 13/05/2022 - 00:00

Nature Physics, Published online: 13 May 2022; doi:10.1038/s41567-022-01611-1

A net of networks

A farewell to Letters

Nature Physics - Fri, 13/05/2022 - 00:00

Nature Physics, Published online: 13 May 2022; doi:10.1038/s41567-022-01621-z

As conventions in scholarly publishing evolve, it is appropriate to reassess the options that we provide to our authors. In this spirit, Nature Physics will soon stop accepting submissions in our Letter format.

Watch out for the W

Nature Physics - Fri, 13/05/2022 - 00:00

Nature Physics, Published online: 13 May 2022; doi:10.1038/s41567-022-01617-9

Watch out for the W

Everything is number

Nature Physics - Fri, 13/05/2022 - 00:00

Nature Physics, Published online: 13 May 2022; doi:10.1038/s41567-022-01610-2

Everything is number

Show instruments some love

Nature Physics - Fri, 13/05/2022 - 00:00

Nature Physics, Published online: 13 May 2022; doi:10.1038/s41567-022-01622-y

Progress in research would be impossible without state-of-the art instruments, but their contributions are often underappreciated.

Glassy net of nanomagnets

Nature Physics - Fri, 13/05/2022 - 00:00

Nature Physics, Published online: 13 May 2022; doi:10.1038/s41567-022-01588-x

An experimental realization of an artificial spin glass is demonstrated, with an arrangement of Ising-type permalloy nanomagnets mimicking the structure of artificial spin ice — and a particular type of neural network.

A crash course in pandemic traffic

Nature Physics - Fri, 13/05/2022 - 00:00

Nature Physics, Published online: 13 May 2022; doi:10.1038/s41567-022-01609-9

A crash course in pandemic traffic

Good vibrations for quantum computing

Nature Physics - Thu, 12/05/2022 - 00:00

Nature Physics, Published online: 12 May 2022; doi:10.1038/s41567-022-01613-z

Quantum computing operations are realized using acoustic devices, paving the way for a new type of quantum processor.

Parity measurement in the strong dispersive regime of circuit quantum acoustodynamics

Nature Physics - Thu, 12/05/2022 - 00:00

Nature Physics, Published online: 12 May 2022; doi:10.1038/s41567-022-01591-2

Mechanical resonators combined with superconducting circuits are a promising platform for controlling non-classical mechanical states. Here this platform is used to directly measure the parity of a motional quantum state.

The optimal strategy balancing risk and speed predicts DNA damage checkpoint override times

Nature Physics - Thu, 12/05/2022 - 00:00

Nature Physics, Published online: 12 May 2022; doi:10.1038/s41567-022-01601-3

Cells have built-in mechanisms for checking for errors during replication, but these checkpoints can slow down reproduction. A theory accounting for optimal checkpoint strategies is presented and tested against observations in budding yeast.

Topological interface of light

Nature Physics - Mon, 09/05/2022 - 00:00

Nature Physics, Published online: 09 May 2022; doi:10.1038/s41567-022-01582-3

Upon combining dissipative and nonlinear effects in a bipartite lattice of cavity polaritons, dissipatively stabilized bulk gap solitons emerge, which create a topological interface.

Directional ballistic transport in the two-dimensional metal PdCoO<sub>2</sub>

Nature Physics - Mon, 09/05/2022 - 00:00

Nature Physics, Published online: 09 May 2022; doi:10.1038/s41567-022-01570-7

Electrons in PdCoO2 can travel a long way before being scattered, and their band structure is such that they can travel in only one of three directions. As a result, the current flow through this nanoscale conductor can be very efficient.

Gap solitons in a one-dimensional driven-dissipative topological lattice

Nature Physics - Mon, 09/05/2022 - 00:00

Nature Physics, Published online: 09 May 2022; doi:10.1038/s41567-022-01599-8

Drive engineering in optical systems can be used to stabilize new nonlinear phases in topological systems. Dissipatively stabilized gap solitons in a polariton lattice establish drive engineering as a resource for nonlinear topological photonics.

High-fidelity three-qubit <i>i</i>Toffoli gate for fixed-frequency superconducting qubits

Nature Physics - Mon, 02/05/2022 - 00:00

Nature Physics, Published online: 02 May 2022; doi:10.1038/s41567-022-01590-3

The efficiency of running quantum algorithms can be improved by expanding the hardware operations that a quantum computer can perform. A high-fidelity three-qubit iToffoli gate has now been demonstrated using superconducting qubits.

Where we are with quantum

Nature Physics - Thu, 28/04/2022 - 00:00

Nature Physics, Published online: 28 April 2022; doi:10.1038/s41567-022-01597-w

A theoretical analysis shows how a person’s location in space could be verified by the transmission of single photons. A vital application of quantum networks may be within reach.

Thermodynamic equilibrium of optical waves

Nature Physics - Thu, 28/04/2022 - 00:00

Nature Physics, Published online: 28 April 2022; doi:10.1038/s41567-022-01607-x

Thermodynamic concepts can be used to understand nonlinear wave systems, but direct evidence for these analogies is scarce. Experiments with multimode fibres have now enabled direct measurement of the thermalization process of optical waves.

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University of Crete - Department of Physics  - Voutes University Campus - GR-70013 Heraklion, Greece
phone: +30 2810 394300 - email: chair@physics.uoc.gr