Stationary, 2D ion crystals of more than 100 ions are carefully characterized and cooled to near the ground state, paving the way for new quantum simulations with long-range interactions.

In the quest for solving the dark-matter puzzle, quantum engineering strategies for improving detection sensitivity are discussed.

A proposal based on state-of-the-art quantum simulators shows how to explore long-range interactions so that central phenomena of quantum chemistry can be qualitatively investigated.

A quantum-enhanced sensing technique based on two cavities coupled via a Josephson ring modulator is developed to substantially accelerate a detection scan rate, ultimately boosting significantly the search of axions.

A comprehensive and platform-independent framework for universal fault-tolerant logic is presented, enabling mapping from an abstract description of the logical gate to a precise set of physical instructions.

An algorithm to simulate NISQ quantum circuits that uses iteratively compressed tensor networks leads to impressive capabilities and rivals experimental demonstrations of “quantum supremacy.”

Protocols for connecting qubits based on electrons in silicon quantum dots are proposed, highlighting opportunities and challenges for the implementation of coherent electron shuttling.

A new method to decode high-dimensional information imprinted on temporal modes is introduced and experimentally demonstrated.

A new technique for open quantum dynamics, combining reaction coordinate mappings and the polaron transform, allows for efficient description of strong system-bath couplings, opening the way for novel applications in nanoscale transport and thermodynamics.

Proof-of-principle measurements inform quantum memory and transduction protocols for $T$ center ensembles.

Energy exchanges between arbitrary quantum systems are shown to obey thermodynamic laws, opening the way for the characterization of autonomous thermal devices at the microscale fueled by quantum, nonideal energy sources.

The investigation of open quantum systems from a complexity-theoretic perspective is possible under the lens of a multitime sampling problem.

A new scenario for three observable causal structures is analyzed, going beyond Bell’s model and providing novel insights into whether nonclassical correlations can arise from it.

Dispersive readout of a transmon’s computational states is strongly impacted by unaccounted chaotic dynamics that are often present under regular experimental conditions.

A quantum unitary downfolding formalism that works on noisy and fault-tolerant hardware is proposed and tested on several challenging chemical problems, offering a viable approach for estimating molecular properties with chemical accuracy.

A unified description is presented that allows the optimal state preparation of collective spin systems for quantum metrology based on the spins’ semiclassical dynamics.

A class of symmetry-protected topological states relevant for measurement-based quantum computation is shown to be constructible using only constant-depth quantum circuits by leveraging symmetries, midcircuit measurements, and feed forward.

A quantum state tomography method with continuously tunable measurement operators is experimentally explored, showing reliable high-fidelity full quantum state reconstruction of Rydberg atom arrays.

Stationary, 2D ion crystals of more than 100 ions are carefully characterized and cooled to near the ground state, paving the way for new quantum simulations with long-range interactions.

Thermodynamics of noncommuting charges is experimentally probed using a trapped-ion simulator, demonstrating the thermalization of a many-body system to a non-Abelian thermal state.

The tools to prepare and characterize multimode bosonic states is expanded, allowing the experimental demonstration of pair-coherent states on superconducting cavities—a step closer to the pair-cat code.

An xᴏʀ oblivious transfer protocol for quantum communication is characterized in detail, including determining all cheating probabilities and a proof-of-principle experimental implementation.

A recipe on how to construct quantum error-correcting codes that are tailored to the connectivity constraints of modular architectures is presented.

The time evolution of spin-squeezed hyperfine clock states is observed on previously inaccessible timescales, opening a pathway to entanglement-enhanced atomic clocks.

Structured Trotter steps enable faster quantum simulation.

The dimensionality of entanglement is probed using properties of the correlation matrix in randomized measurements, a method that works without a common reference frame and with arbitrary dimensionality.

Novel insights are obtained on randomized measurements, providing a connection between the geometry of correlation matrices and informationally complete measurements.

A new cavity QED setup displays both high-cooperativity and high-resolution intracavity imaging thanks to multimode superposition.

A framework to design non-Abelian group-equivariant quantum variational Ansätze as an example of extended permutational quantum computation is introduced.

Tools to analyze the loss and error tolerance in general graph codes are developed and used to build optimization techniques, boosting the capabilities of photonic quantum technologies.

A proposal suggests that non-Abelian chiral spin liquids can be realized and probed in quantum simulators using Floquet engineering.

A novel scheme for a scalable implementation of U(1) lattice gauge theories coupled to matter in one and two dimensions using alkaline-earth atoms in state-dependent optical lattices.

An algorithm for performing phase-estimation tasks on early fault-tolerant quantum computers promises to reduce circuit depth by nearly 2 orders of magnitude.

The single-shot performance of higher-dimensional hypergraph product codes is studied, revealing strategies that greatly exceed all previously reported thresholds.

A novel approach to determining fundamental precision limits for multiparameter metrology; concrete implementations on programmable quantum sensors that approach these fundamental limits are shown.

Bayes’ rule, one of the foundational results in probability theory, is rigorously extended to the quantum domain through the notion of time-reversal symmetry.

Novel and experimentally appealing protocols for realizing multiqubit entangling gates using neutral-atom qubits are introduced.

A family of Rydberg blockade gates for neutral-atom qubits is presented, showing how one can significantly reduce the requirements on laser stability and atomic temperature to achieve fault-tolerant quantum computing.

A bosonic code is proposed that makes use of both two-photon loss and Kerr nonlinearity, offering an enhanced performance over a broad range of detuning values and resistance to the random frequency shifts arising in multiple-qubit operations.

Quantum contextuality is linked to the expressive power of quantum neural networks and used in a novel strategy for designing quantum machine-learning models.

Using measurement as a resource gives a new picture of the landscape of long-range entangled states, with several practical implications for quantum simulators.

A new algorithm reduces the resources needed to simulate the dynamics of a quantum system on a classical computer.

A new class of error-correcting dynamic codes in two and three dimensions that has no explicit connection to any parent subsystem code is developed.

The strategy of concatenating Gottesman-Kitaev-Preskill with qubit error-correcting codes is investigated, providing insights on the advantages over established schemes and on how to build efficient decoders.

The second law of thermodynamics and Landauer’s erasure principle are formulated for noisy optical polarizers, providing fundamental new advances on the thermodynamic description of quantum communication devices.

Continuous-variable entanglement of propagating modes can be made robust against thermal fluctuations by using a clever approach based on nonreciprocity; a method ideally suited for parametric circuit QED implementations.

A proposed pipelining architecture processes a stack of qubit arrays and implements an effective 3D qubit lattice on a physical 2D hardware substrate, allowing the realization of a variety of code structures with the cost of magic state distillation reduced by 2 orders of magnitude.

A radio-frequency multiplier is implemented in a multigate silicon nanowire transistor at cryogenic temperatures, greatly alleviating the challenges associated with the delivery of high-frequency signals to semiconductor quantum processors.

A framework is proposed for creating many-body entangled states with generalized measurements, showing a significant improvement in performance.

Novel mathematical techniques are developed and used to show that local perturbations have local effects in power-law interacting systems.

Tighter Lieb-Robinson bounds, including sub-ballistic light cones, are derived for one-dimensional disordered systems.

An experimental investigation of nonlinearly dissipative bistable dynamical systems shows macroscopic bit-flip times with mesoscopic photon numbers.

A theoretical framework for quantum state engineering with free electrons coupled to photonic integrated circuits.

Bayes’ theorem is extended to the domain of quasiprobabilities and informationally complete measurements using the Petz recovery map.

The notion of irreversibility, which is partially due to the generation of correlations between degrees of freedom of system and environment, is split into quantum and classical contributions, which are found to behave very differently for fermions and bosons.

A new geometric framework to implement two-qubit gates between bosonic qubits is proposed, allowing one to reach gate fidelities at the 0.01% level with today’s hardware after detecting for errors.

A SNAIL-based coupler is used to devise a programmable beam splitter interaction between two bosonic modes with over an octave separation in frequency; the method is further applied as a primitive for constructing two-qubit bosonic gates.

The effects of ionizing radiation on superconducting qubits are studied, showing that the two-level systems near a qubit can be “scrambled,” resulting in long-lasting changes to the lifetime of the qubit.

A constructive framework to duality transformations for any given one-dimensional quantum Hamiltonian is developed, enabling their classification by connecting module categories to different but equivalent representations of the Hamiltonian symmetries.

A proposed scheme converts physical noise on trapped-ion qubits into erasures, thereby significantly improving the performance of quantum error correction.

Quasiprobability representation of CSS circuits is used to obtain distillation bounds capable of outperforming previous results in regimes of practical interest.

A detailed account on how quantum simulators and quantum computers can help explore the fundamental constituents of matter and energy, from the smallest to the largest structures in the Universe.