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An Alice ring is related to the unusual topology of the monopole field and its decay. Here the authors demonstrate a topological monopole defect in the form of an Alice ring using gaseous Bose–Einstein condensates of 87Rb atoms.

The ALICE Collaboration provides details on the microscopic mechanism that ends up creating antideuteron in high-energy proton–proton collisions at the Large Hadron Collider.

A twin-field quantum key distribution protocol based on optical coherence is deployed over a 254-kilometre commercial telecom network, demonstrating that coherence-based quantum communication can be aligned with existing telecommunication infrastructure.

The oblivious transfer protocol is a cryptographic primitive used to create many different secure two-party schemes. Here, Erven et al. provide the first implementation of the oblivious transfer protocol using entangled photons, within the noisy storage model.

Continuous variable quantum key distribution allows secure communication that is more robust against channel losses than discrete approaches, yet is strongly affected by noise. Madsenet al.devise a continuous scheme for modulated entangled states that is more tolerant to noise and loss than other protocols.

Quantum digital signatures exploit quantum mechanics to provide verification of messages at the limits of information theory. Clarkeet al.demonstrate a photonic system that provides quantum digital signatures for messages sent to two receivers and is secure against forgery and repudiation.

An end-to-end continuous-variable quantum key distribution system with an untrusted node is proposed. A proof-of-principle experiment shows that 10⁻¹ secret key bits per relay use are distributed at 4 dB loss, corresponding to 20 km in optical fibre.

In a future quantum internet, entanglement or a secret key should be efficiently provided between two points via intermediate nodes connected by optical channels. Here the authors derive general rate-loss trade-off for such protocols, that is applicable to any network topology.

Chemical modifications in DNA enable hidden messages for secure data transmission. Here, authors develop DeepSME, a nanopore sequencing and deep-learning framework that conceals data into DNA using 5-hydroxymethylcytosine and enables single-molecule private communication.

Continuous-variable QKD protocols are usually easier to implement than discrete-variables ones, but their security analyses are less developed. Here, the authors propose and demonstrate in the lab a CVQKD protocol that can generate composable keys secure against collective attacks.

Quantum communications operate with shared multipartite entangled states, and this has to be certified in a setting where not all parties are trusted in the same way. Here the authors propose a method to certify multipartite entanglement in asymmetric scenarios and demonstrate it in an optical experiment.

Random walks are useful for classical algorithms, while recent work has begun exploring their quantum analogue. Here, Jeonget al.perform a delayed-choice experiment for multi-dimensional quantum walks using a single photon source, and study a simulation of the Grover walk model.

Tree buds integrate cold and warm cues to control dormancy release. Extended warm periods block plasmodesmata opening by repressing Flowering Locus T and GA pathways in buds. This mechanism ensures robust temporal regulation of dormancy release.

Measurements of the inelastic cross section of anti-³He allow the estimation of the transparency of the Milky Way to the propagation of these light antinuclei produced in either cosmic-ray collisions or annihilation of dark-matter particles.

Humanity’s Last Exam, a multi-modal benchmark at the frontier of human knowledge, is designed to be an expert-level closed-ended academic benchmark with broad subject coverage.

Storage-free quantum repeaters represent a viable alternative to quantum-memory-based ones. Here, the authors propose a modified scheme for Bell state measurements which reduces the necessary resources for realising such an all-photonic repeater, and show a proof-of-principle implementation.

A strategy for cooperation in repeated games, called cumulative reciprocity, is proposed. This strategy is robust with respect to errors, enforces fair outcomes, and evolves in environments that are usually hostile to cooperation.

The feasibility of satellite-assisted quantum communication is demonstrated by a field test on the ground. To supress noise due to sunlight the wavelength of 1,550 nm is chosen, and spectrum and spatial filtering technology developed.

Continuous-variable remote state preparation in the microwave domain would allow to leverage the superconducting technology for quantum networks applications. Here, the authors show how to deterministically prepare squeezed Gaussian states across 35 cm using previously shared entanglement.

SleepGPT is a time-frequency foundation model for sleep decoding, built on a generative pretrained transformer, achieving superior performance in various downstream tasks across datasets.

A quantum network formed by three optically connected nodes comprising solid-state qubits demonstrates the teleportation of quantum information between two non-neighbouring nodes, negating the need for a direct connection between them.

There are good reasons to consider nonlocality to be the defining feature of quantum mechanics, but stronger nonlocal correlations than those predicted by quantum theory could exist, which raises the intriguing question of what lies beyond.

A solid-state spin memory is used to demonstrate quantum repeater functionality, which has the potential to overcome photon losses involved in long-distance transmission of quantum information.

Quantum communication promises important advances in information and communication technology, yet it suffers from alignment sensitivity. Here, an alignment-free approach is demonstrated using liquid crystal devices, allowing for broader applications, including satellites.

Developing reliable resource characterization while guaranteeing resource efficiency is essential in practical quantum information processing. In this work, the authors show that the data obtained from entanglement distillation protocols can be further processed to efficiently and robustly characterize the entangled resources.

Estimates from the Global Burden of Disease study reveal declines in chronic respiratory disease mortality between 1990 and 2023—especially during the COVID-19 pandemic—but the burdens on people affected remain substantial.

Generalized measurements that do not correspond to conventional basis projections of the quantum wavefunction are a part of several important protocols in quantum information. These measurements can be certifiably performed on higher-dimensional systems using optical fibre technology.

Quantum nonlocality is known to be reducible to quantum uncertainty and steering, but it is unclear whether steering is actually as essential as uncertainty. Here, the authors show that both steering and uncertainty play a role in determining optimal strategies in nonlocal games.

Two superconducting cavity modes are entangled using an exponential-SWAP logic gate.

This study uses single-cell DNA sequencing to analyze genomic evolution in pancreatic cancer using a cohort of multiregionally and longitudinally sampled patients’ tissues across various clinical contexts.

Device-independent randomness expansion is demonstrated in an experiment that is secure in the presence of a classical eavesdropper who does not share any entanglement with the setup.

Schrodinger’s cat paradox embodies the open question of whether quantum effects can survive at macroscopic scales. A quantum optics experiment explores this question by creating entanglement between a microscopic and a macroscopic system.

Rapid immune activation requires tight control of mRNA stability in CD8⁺ T cells. Here, the authors show that a compositive RNA motif – m⁶A sites positioned next to AU-rich elements - marks mRNAs for rapid decay during activation, revealing a coordinated mechanism that shapes T-cell immunity.

This study surveyed key informants across 26 countries on burning plastic for waste management and energy needs. It finds high awareness of this practice, with potential drivers including inadequate waste collection and a lack of affordable fuels.

This review covers state-of-the-art quantum teleportation technologies, from photonic qubits and optical modes to atomic ensembles, trapped atoms and solid-state systems. Open issues and potential future implementations are also discussed.

Identifying jets originating from heavy quarks plays a fundamental role in hadronic collider experiments. In this work, the ATLAS Collaboration describes and tests a transformer-based neural network architecture for jet flavour tagging based on low-level input and physics-inspired constraints.

Nature asked about your most memorable scientific gifts. You delivered.

While Bell inequalities have been violated several times—mostly in photonic systems—their violations within particle physics experiments are less explored. Here, the BESIII Collaboration showcases Bell-violating nonlocal correlations between entangled hyperon pairs.

Many pelagic fishes and squids live at ocean depths below the euphotic zone but whether surface predators dive to these depths to feed on them is unclear. Here, the authors tag Chilean devil rays and demonstrate that they regularly make dives to at least 1,500 m, suggesting that the rays forage for food at these depths.