Search

Fusion-based quantum computing relies on small entangled resource states that are then fused together probabilistically via linear optical circuits. Here, the authors demonstrate temporal fusion—where resource states generated at different times by the same quantum emitter are fused together—using a spin-photon interface in a quantum dot embedded in a photonic crystal waveguide.

Spin–photon interfaces provide a connection between quantum information stored in atomic or electronic spins and optical communications networks. A quantum photon emitter with long-lived, controllable coherent spin has now been demonstrated.

The ability to imprint phase shifts on light lie at the basis of several classical and quantum light-based information processing primitives. Here, the authors demonstrate the phase shift of an optical field by a single quantum emitter in a waveguide, at the single photon level.

Photons emitted from a quantum dot typically have slightly different frequencies owing to various sources of noise. Here, the authors suppress the noise, notably the noise arising from the nuclear spins, and demonstrate single-photon emission with a transform-limited optical linewidth.

The emergence of universal collective behaviour is demonstrated through collisions of electron droplets containing up to five particles, which exhibit strong all-body correlations characteristic of a Coulomb liquid.

The spin state of a single electron is shown to control the transmission of single photons through a nanophotonic waveguide, thus realizing a spin-based photonic switch.

Gate-defined quantum dots offer a way to engineer electrically controllable quantum systems with potential for information processing. Here, the authors transfer angular momentum from the polarization of a single photon to the spin of a single electron in a gate-defined double quantum dot.

Electronic excitations in low-dimensional quantum nanoelectronic devices are collective waves that are strongly affected by the Coulomb interaction. Here, the authors demonstrate that they are able to prepare these collective excitations down to the single electron level and control their propagation.

Resonantly-excited quantum-dot-based single photon sources feature very high purity, but also limited efficiency due to the need to suppress the residual pump. Here, the authors demonstrate a workaround, performing optical pumping and signal collection in two orthogonal modes inside a nanophotonic circuit.

Charge noise and spin noise lead to decoherence of the state of a quantum dot. A fast spectroscopic technique based on resonance fluorescence can distinguish between these two deleterious effects, enabling a better understanding of how to minimize their influence.

Nano-NMR techniques are used on a semiconductor quantum dot to reveal an electron-mediated coupling between nuclear spins.

The development of electronic flying qubits requires the ability to generate and control single-electron excitations. Here the authors demonstrate quantum coherence of ultrashort single-electron plasmonic pulses in an electronic Mach-Zehnder interferometer, revealing a non-adiabatic regime at high frequencies.

Arne Pfeufer and colleagues report a genome-wide association study of the electrocardiographic measurement of PR interval in seven population-based cohorts in the CHARGE consortium. They identify nine loci associated with PR interval and highlight candidate genes with a role in ion channels and cardiac development.

Detailed data on SARS-CoV-2 dynamics in Africa remain limited. Here, the authors use longitudinal serology and SARS-CoV-2 sequencing data from Ethiopia between August 2020 and July 2022 to characterise circulating variants, identify infection pathways, and explore cross-immunity properties.

A genome-wide study by the Long COVID Host Genetics Initiative identifies an association between the FOXP4 locus and long COVID, implicating altered lung function in its pathophysiology.

Nucleation control of self-assembled quantum dots is challenging. Here, the authors employ conventional molecular beam epitaxy to achieve wafer-scale density modulation of high-quality quantum dots with tunable periodicity on unpatterned substrates.

Analyses of 475 ancient horse genomes show modern horses emerged around 2200 bce, coinciding with sudden expansion across Eurasia, refuting the narrative of large horse herds accompanying earlier migrations of steppe peoples across Europe.

A global multi-taxon extinction risk assessment of freshwater fauna for The IUCN Red List of Threatened Species finds one-quarter of species to be at high risk of extinction.

Analysis of 273 ancient horse genomes reveals that modern domestic horses originated in the Western Eurasian steppes, especially the lower Volga-Don region.

Arne Pfeufer, Aravinda Chakravarti and colleagues from the QTSCD consortium report genetic associations influencing the QT interval duration, a measure of cardiac repolarization which is a risk factor for sudden cardiac death, in five genome-wide association studies.

Three papers in this issue of Nature use highly sensitive ChIP–seq assays to describe the dynamic patterns of histone modifications during early mouse embryogenesis, showing that oocytes have a distinctive epigenome and providing insights into how the maternal gene expression program transitions to the zygotic program.

A global network of researchers was formed to investigate the role of human genetics in SARS-CoV-2 infection and COVID-19 severity; this paper reports 13 genome-wide significant loci and potentially actionable mechanisms in response to infection.

Nuclear magnetic resonance experiments on 100,000 nuclear spins in a quantum dot allows for the reversal of these spins back and forth as if they were a single unit.

A colder Baltic Sea greeted this fish from across the Atantic Ocean in the Middle Ages.

In February 2024, rapid, recurring X-ray bursts (quasi-periodic eruptions) were detected from the black hole within galaxy SDSS1335+0728. Named Ansky, the event features day-and-a-half-long flares and extreme energy levels, challenging existing models.

Realising scalable entangled photon sources with quantum dots requires compensating for both wavelength mismatches and exciton fine-structure splitting (FSS). So far, multiple QDs with the same emission wavelength and near-zero FSS have not been demonstrated. Here, the authors fill this gap, reaching high entanglement fidelity for multiple QDs tuned into resonance with each other or with Rb atoms.

Coupling a single-photon emitter to a mechanical resonator enables the generation of single phonons. Here, the authors study the interaction of a single-photon emitter and a phononic-crystal resonator in the sideband-resolved regime.

Climate change adaptation and sea level rise pose challenges for both natural and societal dynamics. Here the authors analyse coastal processes and socio-political dimensions of erosion, leading to maldevelopment on Fuvahmulah in the Maldives.

High efficiency, coherence and indistinguishability are key requirements for the application of single-photon sources for quantum technologies, but hard to achieve concurrently. A gated quantum dot in an open, tunable microcavity now can create single photons on-demand with an end-to-end efficiency of 57%, preserving coherence over microsecond-long trains of single photons.

Entanglement between single photons and solid-state emitters is a key component for photonic quantum computing and networks. Here, using a single electron spin in a quantum dot, the authors present a deterministic photon source achieving three-qubit entanglement of one electron spin and two photons.

Multiancestry genome-wide association analyses identify new risk loci for stroke and stroke subtypes. Fine mapping and bioinformatics analyses of these risk loci point to mechanisms not previously implicated in stroke pathophysiology.

Niche modelling and aDNA reveal increasing prevalence of black horses in post-glacial forests, suggesting they became increasingly adapted to these habitats.

Collisions between two individual electrons in a quantum nanoelectronic circuit revealed a mutual interaction fully mediated by Coulomb repulsion—an essential building block for two-qubit logic implementations with flying electrons.

A semiconductor quantum dot can passively mediate interactions between two photons, enabling the creation of entangled photon states.

A trans-ancestry meta-analysis of GWAS of glycemic traits in up to 281,416 individuals identifies 99 novel loci, of which one quarter was found due to the multi-ancestry approach, which also improves fine-mapping of credible variant sets.

Coherent manipulation of hole-orbital states in semiconductor quantum dots is achieved through stimulated Auger processes, opening doors to new types of orbital-based solid-state quantum photonic devices.

Panos Deloukas, Nilesh Samani and colleagues report a large-scale association analysis using the Metabochip array in 63,746 coronary artery disease cases and 130,681 controls. They identify 15 susceptibility loci, refine previous associations and use network analysis to highlight biological pathways.

Measurements on a single artificial atom—a quantum dot—coupled to an optical cavity show scattering dynamics that depend on the number of photons involved in the light–matter interaction, which is a signature of stimulated emission.

A cross-ancestry meta-analysis of genome-wide association studies identifies association signals for stroke and its subtypes at 89 (61 new) independent loci, reveals putative causal genes, highlighting F11, KLKB1, PROC, GP1BA, LAMC2 and VCAM1 as potential drug targets, and provides cross-ancestry integrative risk prediction.