Cat qubits, a type of bosonic qubit encoded in a harmonic oscillator, can exhibit an exponential noise bias against bit-flip errors with increasing mean photon number. Here, we focus on cat qubits stabilized by two-photon dissipation, where pairs of photons are added and removed from a harmonic oscillator by an auxiliary, lossy buffer mode. This process requires a large loss rate and strong nonlinearities

We construct the phase space of a spherically symmetric causal diamond in (d+2)-dimensional Minkowski spacetime. Utilizing the covariant phase space formalism, we identify the relevant degrees of freedom that localize to the d-dimensional bifurcate horizon and, upon canonical quantization, determine their commutators. On this phase space, we find two Iyer-Wald charges. The first of these charges, proportional

We show that dark matter direct detection experiments are sensitive to the existence of particles with a small effective charge (for instance, via couplings to a kinetically mixed, low-mass dark photon). Our forecasts do depend on these particles comprising a significant fraction of the dark matter. Rather, these experiments are sensitive to the irreducible abundance produced in the early Universe

Letter to the Editor

Letter to the Editor

Snippets from Nature’s past.

Letter to the Editor

Letter to the Editor

A multi-century climate record suggests that current Atlantic jet-stream variations are not the cause of an increase in extreme weather events.

Insurers rely on sophisticated catastrophe modelling to estimate risk exposure — and as climate risks are rising, so are the costs for protection.

Intermittent fasting has gained a following, in part because of tantalizing hints that it can boost cognition, fend off cancer and even slow ageing.

Interventions involving bacteria or fungi could help to sequester greenhouse gases, create more sustainable products and clean up pollution — in ways that are economically viable and safe.

The efficient and modular diversification of molecular scaffolds, particularly for the synthesis of diverse molecular libraries, remains a significant challenge in drug optimization campaigns.1–3 The late-stage introduction of alkyl fragments is especially desirable due to the high sp³-character and structural versatility of these motifs.4 Given their prevalence in molecular frameworks, C(sp²)−H bonds

After the gruelling races, levels of the nerve-cell insulator myelin were lower, suggesting the brain uses the fatty substance as fuel.

Study dispels myth that order of names in a paper’s author list dictates perception of success.

The world’s largest particle-physics laboratory is approaching a pivotal moment in its history.

The nuclear pore complex is the gateway to the nucleus of cells. Now an in vivo imaging technique can track the way in which molecules move through this complex.

Several high-profile incidents in the past month have scientists on edge.

Babies as young as one year old can form memories, our adult brains just can’t access them. Plus, US-funded researchers outside the United States are being grilled about ideology and physicists suggest a ‘crazy’ new way we could generate electricity.

In the experiment, the g factor of boronlike Sn45+118 has been measured with a 0.5 ppb uncertainty. This is the first high-precision measurement of the g factor of a heavy boronlike ion. The measured value of 0.6 447 038 265(4) is consistent with the presented state-of-the-art theory calculations, which predict a value of 0.64 470 29(8). So far, the only boronlike ion of which the g factor was measured

The anomalous Hall effect (AHE) has emerged as a key indicator of time-reversal symmetry breaking (TRSB) and topological features in electronic band structures. Absent of a magnetic field, the AHE requires spontaneous TRSB but has proven hard to probe due to averaging over domains. The anomalous component of the Hall effect is thus frequently derived from extrapolating the magnetic field dependence

We investigate decays of hypothetical unstable new physics particles into metastable species such as muons, pions, or kaons in the early Universe, when temperatures are in the MeV range, and study how they affect cosmic neutrinos. We demonstrate that the nontrivial dynamics of metastables in the plasma alters the impact of the new physics particles on the neutrino population, including the effective

Juan Ramón Fernández Cardenete tends the Alhambra’s many water features and gardens.

As glaciers begin to disappear, technological fixes to slow or halt ice melt are emerging. But regulations are urgently required before these fixes are used widely.

AlphaFold’s highly accurate structural models transformed protein biology,but RNA lags behind.

Geophysicist Shiba Subedi combines science and songwriting to raise awareness and debunk earthquake myths.

Yohannes Haile-Selassie wants to shift the trajectory of palaeoanthropology in fossil-rich Ethiopia away from its long colonial heritage.

Another man also regained some movement, but two others experienced minimal improvement.

One century after Edwin Hubble revealed his astonishing discovery of a cosmos beyond the Milky Way, the most precise measurements still can’t agree on how fast galaxies are moving.

The vertical placement of an exoplanet’s jet stream is not predicted by simulated climate systems.

Some low-profile meetings are helpful for parts of the scientific community. Others look like more of a cash grab.

Quantum entanglement measures of many-body states have been increasingly useful to characterize phases of matter. Here, we explore a surprising connection between mixed-state entanglement and ’t Hooft anomaly. More specifically, we consider lattice systems in d space dimensions with anomalous symmetry G where the anomaly is characterized by an invariant in the group cohomology Hd+2[G,U(1)]. We show

‘Microlightning’ might have sparked life on Earth. Mice who find a friend unconscious will give them friends first aid.

Concern rises among researchers after agency officials ask for a list of projects funded to study the jabs.

A crackdown on sulfur in ship fuel is linked to a steep drop in thunderclouds in the Indian Ocean and South China Sea.

Terminated projects include studies on the implications of AI in combat and how extremism spreads online.

Furloughs and more staff reductions loom as academic institutions contend with the prospect of even deeper cuts to federal funding.

The discovery of superconductivity in the Ba-La-Cu-O system (the cuprate) in the 30 K range marked a significant breakthrough, which inspired extensive explorations of oxide based layered superconductors to identify electron pairing with higher critical temperatures (Tc)1. Despite recent observations of superconductivity in nickel-oxide-based compounds (the nickelates), evidence of Cooper pairing above

Weather prediction is critical for a range of human activities including transportation, agriculture and industry, as well as the safety of the general public. Machine learning is transforming numerical weather prediction (NWP) by replacing the numerical solver with neural networks, improving the speed and accuracy of the forecasting component of the prediction pipeline 1,2,3,4,5,6. However, current

Mysterious ‘dark energy’ — thought to be a cosmological constant — might have weakened over billions of years. Plus, skin immune cells form their own ‘bandage’ around wounds and how astronomers are tackling the growing problem of satellite pollution.

MRI scans show that the brains of infants and toddlers can encode memories, even if we don’t remember them as adults.

The document asks US-funded scientists in Australia, the UK and the EU to declare links to China or projects on diversity, equity and inclusion.

Correction to: Nature https://doi.org/10.1038/s41586-024-08300-4 Published online 8 January 2025

Correction to: Nature https://doi.org/10.1038/s41586-024-07566-y Published online 24 July 2024

Correction to: Nature https://doi.org/10.1038/s41586-023-06311-1 Published online 12 July 2023

As photonic technologies grow in multidimensional aspects, integrated photonics holds a unique position and continuously presents enormous possibilities for research communities. Applications include data centers, environmental monitoring, medical diagnosis, and highly compact communication components, with further possibilities continuously growing. Herein, we review state-of-the-art integrated photonic

Within multicellular living systems, cells coordinate their positions with spatiotemporal accuracy to form various tissue structures and control development. These arrangements can be regulated by tissue geometry, biochemical cues, as well as mechanical perturbations. However, how cells pack during dynamic three-dimensional multicellular architectures formation remains unclear. Here, examining a growing

We find that the presence of strong non-Abelian symmetries can lead to highly entangled stationary states even for unital quantum channels. We derive exact expressions for the bipartite logarithmic negativity, Rényi negativities, and operator space entanglement for stationary states restricted to one symmetric subspace, with focus on the trivial subspace. We prove that these apply to open quantum evolutions

Ultralight dark matter induces time-dependent perturbations in the spacetime metric, enabling its . In this Letter, we propose using astrometry to detect dark matter. After reviewing the calculation of the metric in the presence of scalar dark matter, we study the influence of the perturbations on the apparent motion of astrophysical bodies. We apply our results to angular position measurements of

Cooperative optical effects are enabled and controlled by interactions between molecular dipoles, meaning that their mutual orientation is of paramount importance to, for example, superabsorbing light-harvesting antennas. Here we show how to move beyond the possibilities of simple geometric tailoring, demonstrating how a metallic sphere placed within a ring of parallel dipoles engineers an effective