A digitally controlled silicon quantum processing unit - Nature

A silicon quantum processing unit executes high-fidelity multiqubit circuits, with all time-varying control signals generated by a digitally programmed cryogenic complementary metal–oxide–semiconductor controller and delivered to the low-noise, exchange-only qubit device through a high-density superconducting ribbon cable.

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Underdog ‘spin qubits’ leap forward in race to a useful quantum computer

Four independent research teams report big advances in devices built with the underestimated quantum bits, including lower error rates.

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Two-qubit logic and teleportation with mobile spin qubits in silicon - Nature

A device architecture comprising silicon-based mobile qubits and the shuttling of two electron spins together demonstrates two-qubit gate fidelity of about 99% as well as quantum state teleportation between qubits separated by 320 nm.

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Prestigious European science funder scraps stricter rules after researcher backlash

The tough new policy was introduced to curb submissions, but drew criticism from researchers.

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Digital quantum magnetism on a trapped-ion quantum computer - Nature

Simulations performed using Quantinuum’s H2 trapped-ion quantum computer for observing thermalization on challenging timescales demonstrate the usefulness of digital quantum computers for investigating continuous-time dynamics in regimes that classical simulation methods find difficult.

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300-unit-per-second roll-to-roll manufacturing of visible metalenses - Nature

This work demonstrates industrial-scale roll-to-roll fabrication of high-efficiency visible metalenses using nanoimprinting and TiO2 coating, achieving low cost, high throughput and uniform performance, enabling commercialization of metasurfaces.

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Large-scale quantum communication networks with integrated photonics - Nature

A lab-scale proof-of-principle demonstration of a quantum network comprising one server chip and 20 client photonic chips implementing twin-field quantum key distribution shows excellent scalability and reliability and yields a pathway towards future large-scale networks.

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Particle collisions cast light on how matter forms from seemingly empty space

Fundamental particles called quarks can be created in quantum-correlated pairs. These correlations can be passed on to larger particles that form from the quarks.

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Quantum teleportation is even weirder than you think - Nature

Don't let the catchy name distract you, says Philip Ball: the questions inspired by this arguably misnamed phenomenon go to the heart of quantum theory.

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Sterile-neutrino search based on 259 days of KATRIN data - Nature

The analysis of the energy spectrum of 36 million tritium β-decay electrons recorded in 259 measurement days within the last 40 eV below the endpoint challenges the Neutrino-4 claim.

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Classical theories of gravity produce entanglement - Nature

By applying the full framework of quantum field theory, it is shown that local classical theories of gravity can transmit quantum information and, thus, generate entanglement through physical, local processes.

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Physics Nobel win for groundbreaking quantum tunnelling experiments

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Groundbreaking quantum-tunnelling experiments win physics Nobel

John Clarke, Michel Devoret and John Martinis discovered quantum physics on a macroscopic scale, paving the way for quantum computing.

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The ABC of cQED - Nature Physics

The combination of microwave photons with superconducting quantum circuits offers promise for quantum technologies and the fundamental study of quantum light–matter interactions. This month, a Focus issue explores this field of research.

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Groundbreaking quantum-tunnelling experiments win physics Nobel

John Clarke, Michel Devoret and John Martinis discovered quantum physics on a macroscopic scale, paving the way for quantum computing.

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Quantum Josephson junction circuits and the dawn of artificial atoms - Nature Physics

In 1985, experiments revealed the quantum behaviour of a macroscopic degree of freedom: the phase difference across a Josephson junction. The authors recount the history of this milestone for the development of superconducting quantum circuits.

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Quantum Josephson junction circuits and the dawn of artificial atoms - Nature Physics

In 1985, experiments revealed the quantum behaviour of a macroscopic degree of freedom: the phase difference across a Josephson junction. The authors recount the history of this milestone for the development of superconducting quantum circuits.

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Merging of magnetic plasma ‘flux ropes’ is driven by turbulence

Experiments reveal that high-energy plasma events in the Solar System and beyond might be driven by magnetic fluctuations and turbulence that happen on very small scales.

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Direct observation of coherent elastic antineutrino–nucleus scattering - Nature

Direct observation of coherent elastic neutrino–nucleus scattering is reported using the data from the CONUS+ experiment in which the antineutrinos with energy less than 10 MeV are produced in a nuclear reactor.

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Observation of elusive interaction between neutrinos and atomic nuclei

Neutrinos are particles that are notoriously hard to detect, but observations of a process called coherent elastic neutrino–nucleus scattering could enable physicists to develop better ways of studying them.

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Physicists should revel in the diversity of ways to understand quantum mechanics

Nature survey shows that disagreement about the meaning of quantum physics remains strong, even 100 years in. And that’s OK.

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Physicists disagree wildly on what quantum mechanics says about reality, Nature survey shows

First major attempt to chart researchers’ views finds interpretations in conflict.

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Physicists disagree wildly on what quantum mechanics says about reality, Nature survey shows

First major attempt to chart researchers’ views finds interpretations in conflict.

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Observation of charge–parity symmetry breaking in baryon decays - Nature

The LHCb experiment at CERN has observed significant asymmetries between the decay rates of the beauty baryon and its CP-conjugated antibaryon, thus demonstrating CP violation in baryon decays.

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Why quantum physicists are still arguing after 100 years

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Traceable random numbers from a non-local quantum advantage - Nature

A study demonstrates a public generator of random numbers based on device-independent techniques, with the randomness being fully auditable and traceable.

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