PRX Quantum

Performing high-rate entanglement swapping between independent sources over 17.6 km of deployed commercial fiber establishes a scalable architecture for metropolitan quantum networks.

Integrated optical delivery of standing waves is shown to enable fast, multi-mode laser cooling of trapped ions to the quantum ground state, offering simultaneous advantages in cooling rate, bandwidth, and final phonon number.

Surface adsorbates, long blamed for decoherence in diamond quantum sensors, can actually suppress low-frequency noise and extend spin coherence.

A new approach for quantum algorithm design and analysis that bypasses Lindbladian simulation overhead yields improved scaling with system size and a quadratic improvement in spectral-gap dependence for quantum Gibbs sampling algorithms.

Applying temporal coarse graining to the influence matrix of chaotic quantum baths reveals an entanglement transition, reconciling global non-Markovian memory with local thermalization.

A new theoretical framework reconciles the second law of thermodynamics with quantum mechanics, resolving a long-standing paradox by demonstrating how macroscopic thermodynamic principles emerge even from pure quantum states.

A variational double bracket flow algorithm leveraging Pauli propagation efficiently estimates ground-state energies in strongly correlated systems.

Inspired by programmable optical interferometer networks, global control over tunneling and site-dependent phase shifts are shown to provide arbitrary control over atom motion in an optical lattice and in efficient rearrangement schemes.

Analyzing loss, dephasing, error-spreading, and homodyne measurement inefficiencies in Gottesman-Kitaev-Preskill (GKP) qubits yields a highly-improved understanding of GKP qubits in practice and new strategies for improving performance.

Atoms are removed one by one from optical tweezers through repeated Rydberg excitation and autoionization until only one remains in each trap, speeding preparation of tweezer arrays.

A programmable array of atoms reveals how symmetry of the quantum Ising chain transforms when chains are coupled together, providing experimental signatures of a new excitation spectrum.

Researchers introduce a new entropic measure of quantum chaos, providing a physical interpretation to higher-point out-of-time-ordered correlation functions.

An algorithmic framework for constructing gapped boundaries in two-dimensional topological Pauli stabilizer codes enables low-overhead planar qLDPC architectures and fault-tolerant logical operations.

Exponential decay of correlations enables scalable reconstruction of many-qubit processes and their global properties from local measurements.

A unified theoretical framework allows one to measure thermodynamic quantities in strongly coupled quantum systems using only local information, offering a practical foundation for designing next-generation quantum thermal devices.

Tailored coupling between giant atoms and a waveguide enables deterministic quantum state transfer at above 99% fidelity, without any time-dependent control.

A four-dimensional quantum key distribution protocol utilizing full core-mode encoding over deployed multicore fibers is demonstrated, establishing a viable architecture for high-rate quantum-secure communications.

A comprehensive account of the Pauli propagation method for simulating quantum systems, from theory framework to software implementation and applications.

A proposed five-stage framework outlines the path to useful quantum computing, detailing the scientific milestones required to bridge the gap between theory and real-world utility.