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A single electron spin in silicon is dressed by a microwave field to create a new qubit with tangible advantages for quantum computation and nanoscale research.

Intrinsic molecular resources are used to implement a two-qubit iSWAP gate using individually trapped X¹Σ⁺ NaCs molecules.

A proposed network of atomic clocks—using non-local entangled states—could achieve unprecedented stability and accuracy in time-keeping, as well as being secure against internal or external attack.

A large nuclear spin has been successfully placed in a Schrödinger cat state, a superposition of its two most widely separated spin coherent states. This can be used as an error-correctable qubit.

Optically active semiconductor quantum dots have so far suffered from nuclear inhomogeneity limiting all dynamical decoupling measurements to a few microseconds. Lattice-matched GaAs–AlGaAs quantum dots now enable decoupling schemes to achieve a 0.11 ms spin coherence time.

Quantum gates in 2D ion crystals are more challenging than in 1D. Here, the authors use their 2D ion trap platform and acousto-optical deflectors to demonstrate a 2-qubit gate that can stand the ion micromotion in such configuration.

Coupling advances in socioeconomic projections, climate models, damage functions and discounting methods yields an estimate of the social cost of carbon of US$185 per tonne of CO₂—triple the widely used value published by the US government.

A combination of two Nobel ideas circumvents the trade-off between power and accuracy in ultraviolet spectroscopy.

A hybrid analogue–digital quantum simulator is used to demonstrate beyond-classical performance in benchmarking experiments and to study thermalization phenomena in an XY quantum magnet, including the breakdown of Kibble–Zurek scaling predictions and signatures of the Kosterlitz–Thouless phase transition.

Digital quantum simulations of Kitaev’s honeycomb model are realized for two-dimensional fermionic systems using a reconfigurable atom-array processor and used to study the Fermi–Hubbard model on a square lattice.

Donors spins in silicon are coherent, high-performance qubits, but scale-up has been challenging. Here the authors present the first experimental demonstration of exchange-based, entangling two qubit gates between electrons bound to ³¹P donors in Si.

The use of optically addressable spins to control dark electron-spins is promising for multi-qubit platforms; however, control over darks spins has remained challenging. Here, the authors realize entanglement between individual dark spins associated with substitutional nitrogen defects in diamond.

Color centers in diamond have been proposed as a link between remote superconducting units in hybrid quantum systems, where their orbital degree of freedom is utilized. Here the authors report coherent electric-field control of the orbital state of a neutral NV center in diamond.

Cavity magnonics aims to make use of magnons, spin waves for coherent information processing. Here, Song et al demonstrate single-shot magnon interference between two remote YIG spheres, showing controlled perfect constructive and destructive interference.

An ensemble of spins from nitrogen–vacancy centres in diamonds is prepared in a spin-squeezed state.

Long-range coherent spin-qubit transfer between semiconductor quantum dots requires understanding and control over associated errors. Here, the authors achieve high-fidelity coherent state transfer in a Si double quantum dot, underpinning the prospects of a large-scale quantum computer.

For the ultrasensitive detection of magnetic fields either atomic transitions or superconducting circuits are used. Bal et al. combine such approaches and demonstrate a superconducting device functioning as an artificial atom for magnetic field detection with high sensitivity and spatial resolution.

Single electron spins have been detected before, but the methods used proved difficult to extend to multi-spin systems. A magnetic resonance imaging technique is now demonstrated that resolves proximal spins in three dimensions with nanometre-scale resolution. In addition to spatial mapping, the approach allows for coherent control of the individual spins.

Quantum computers require precise control and addressing of individual qubits in a register, but this is impeded by cross-talk between them. Here, in an eight-qubit trapped-ion register, Piltz et al. present an approach to obtain cross-talk of the order of 10⁻⁵, surpassing current thresholds for quantum gates.

Silicon spin qubits can be fabricated in a 300 mm semiconductor manufacturing facility using all-optical lithography and fully industrial processing.

Some theories predict that fundamental constants may depend on time, position or the local density of matter. Truppe et al.compare new precise frequency measurements of microwave transitions in cold CH with Milky Way data, placing a new limit on variation in the fine structure constant.

Isotope engineering of silicon carbide leads to control of nuclear spins associated with single divacancy centres and extended electron spin coherence.

Nuclear spins are excellent qubits, but long-range interactions are difficult to establish. Here, the authors couple a ²⁹Si nuclear spin to electrons in a lithographically defined quantum dot and show initialization, readout and entanglement with the electron spin. The ²⁹Si retains its coherence under electron transfer between quantum dots.

Scaling up the number of atoms or ions in optical atomic clocks enables better precision, but this is often accompanied by interactions that limit the accuracy. Here, the authors propose and discuss using a three dimensional Coulomb crystal of one thousand Sn2+ ions as an optical atomic clock with both high precision and high accuracy.

Deterministic control of the gain–loss balance in non-Hermitian systems remains challenging. A magnonic hybrid platform is now shown to enable this and, hence, coherently control excitations by leveraging an exceptional point.

Readout of a superconducting qubit embedded in a circuit quantum electrodynamics architecture is demonstrated at optical frequencies through a low-noise electro-optomechanical transducer.

A two-qubit quantum processor in a silicon device is demonstrated, which can perform the Deutsch–Josza algorithm and the Grover search algorithm.

The ability of individual ions trapped in separate potential wells to simulate spin–spin interactions is demonstrated by tuning the Coulomb interaction between two ions, independently controlling their local wells and entangling their internal states with a fidelity of approximately 0.82.

Extending matter-wave interferometry to nanoscale objects requires beam splitters that can cope with their internal complexity. Here, the authors demonstrate that the absorption of individual photons allows the center-of-mass coherence of large molecules to be maintained.

Systems with Weyl excitations can display very interesting physical phenomena. Here the authors demonstrate that Weyl excitations exist generically in 3D systems of dipolar particles following angular momentum transfer, and discuss how to observe them in cold alkaline-earth-atom systems.

Understanding ultrafast dynamics of excited states of nitrogen-vacancy helps its manipulation for technological applications. Here the authors use polarization anisotropy spectroscopy and molecular dynamics to investigate sub-picosecond dephasing dynamics, identifying the origin of orbital averaging effects.

Single ytterbium ion qubits in nanophotonic cavities have long coherence times and can be optically read out in a single shot, establishing them as excellent candidates for optical quantum networks.

Light pulses with controllable parameters are desired for studying the fundamental properties of matter. Here the authors generate and use phase-manipulated and highly time-stable XUV pulse pairs to probe the coherent evolution and dephasing of XUV electronic coherences in helium and argon.

Quantum sensors can have exceptional properties but the limits on their performance involve nonclassical effects such as quantum backaction. Here the authors show how to mitigate the effects of backaction on the spectral resolution of an NV centre nuclear spin sensor by controlling the measurement strength.

Impurity centres in diamond have recently attracted attention in the context of quantum information processing. Now their use as magnetic-field sensors is explored, promising a fresh approach to single-spin detection and magnetic-field imaging at the nanoscale.

The BioDIGS project is a nationwide initiative involving students, researchers and educators across more than 40 research and teaching institutions. Participants lead sample collection, computational analysis and results interpretation to understand the relationships between the soil microbiome, environment and health.

Defects in Josephson junctions are considered a nuisance when it comes to using superconducting circuits as building blocks for a quantum-information processor. But if the interaction between the circuit and defects is accurately controlled—as has been demonstrated now—the imperfections might be useful, serving as memory elements.

Nitrogen–vacancy centres in diamond have emerged as a promising platform for quantum information processing at room temperature. Now, coherent coupling between two electron spins separated by almost 10 nm has been demonstrated. At this distance, the spins can be addressed individually, which might enable the construction of a network of connected quantum registers.

Multielectron quantum dots offer a promising platform for high-performance spin qubits; however, previous demonstrations have been limited to single-qubit operation. Here, the authors report a universal gate set and two-qubit Bell state tomography in a high-occupancy double quantum dot in silicon.