A fundamental quantum uncertainty relation reveals an unavoidable trade-off between the reliabilities of the charging power and the work deposited during the charging and discharging of quantum batteries, establishing essential design limits for future quantum energy storage.

[PRX Quantum 7, 033057] Published Tue Sep 15, 2026

Using only existing error syndrome data and no additional calibration circuits, it is possible to efficiently benchmark quantum hardware and verify encoded computations.

[PRX Quantum 7, 033055] Published Mon Sep 14, 2026

A new study demonstrates the optical charging of spins in a quantum dot molecule, while keeping the tunability of its parameter, which can become an important building block for multidimensional photonic cluster state generation.

[PRX Quantum 7, 033056] Published Mon Sep 14, 2026

Verification of encoded quantum systems is made possible with a scalable tool that assesses computational accuracy under general device noise.

[PRX Quantum 7, 033053] Published Fri Sep 11, 2026

Three-dimensional simulations of electron shuttling in realistic SiMOS devices are presented, identifying operating regimes resilient to common device imperfections and charge defects.

[PRX Quantum 7, 033054] Published Fri Sep 11, 2026

A conic optimization method addressing a critical challenge in key rate estimation for quantum key distribution is presented, providing tighter security bounds and fast numerical convergence.

[PRX Quantum 7, 033051] Published Thu Sep 10, 2026

A circuit-based framework characterizing thermal quantum phases via a correlation-decay condition is presented, establishing self-correction as a universal property of finite-temperature quantum memories.

[PRX Quantum 7, 033052] Published Thu Sep 10, 2026

An unsupervised, data-driven framework based on the intrinsic dimension of quantum trajectories provides a robust probe for detecting integrability and ergodicity breaking in open quantum systems beyond the transient regime, while new results on autonomous chaos are discussed.

[PRX Quantum 7, 033049] Published Wed Sep 09, 2026

A general framework for the study of statistical moments of quantum channel ensembles is introduced, providing new insights into noisy quantum circuits and variational quantum algorithms.

[PRX Quantum 7, 033050] Published Wed Sep 09, 2026

For quantum circuits that generate complex dynamics, a single, one-site operation is sufficient to produce randomness, showcasing a trade-off between dynamical chaos and randomness.

[PRX Quantum 7, 033047] Published Tue Sep 08, 2026

A new heuristic approach accelerates the convergence of classical simulation of two-dimensional quantum dynamics, enabling the verification of quantum simulation experiments in previously inaccessible regimes.

[PRX Quantum 7, 033048] Published Tue Sep 08, 2026

Exponentially accurate simulation of open quantum systems is made viable for early fault-tolerant devices via a random compilation method requiring a minimal number of ancilla qubits.

[PRX Quantum 7, 033046] Published Fri Sep 04, 2026

The unavoidable “gauge” ambiguity in learning a quantum computer’s noise does not hinder error mitigation, and this remaining degree of freedom can even be optimized to make mitigation dramatically more efficient.

[PRX Quantum 7, 033045] Published Thu Sep 03, 2026

A dual-species atomic array reduces technical overhead (no local addressing needed and nondestructive midcircuit measurements) and enables efficient entanglement purification for applications in quantum networking and distributed computation.

[PRX Quantum 7, 033044] Published Wed Sep 02, 2026

Experiments in Ge/SiGe quantum point contacts demonstrate a gate-tunable proximity-induced superconducting gap and near-ideal superconducting conductance quantization in excellent agreement with theory.

[PRX Quantum 7, 033043] Published Tue Sep 01, 2026

Researchers experimentally demonstrate a new method for large-bandwidth dispersive readout, with built-in resonator reset, providing potential applications in quantum error correction.

[PRX Quantum 7, 033042] Published Mon Aug 31, 2026

Mapping open quantum systems to higher-dimensional topological order provides a new framework for characterizing strong-to-weak symmetry breaking and nonequilibrium quantum phases.

[PRX Quantum 7, 033041] Published Fri Aug 28, 2026

A versatile framework bridges layout-level microwave simulations with quantum dynamics, enabling realistic modeling of driven superconducting circuits beyond simplified lumped-element descriptions.

[PRX Quantum 7, 033039] Published Thu Aug 27, 2026

A new analytical pulse-shaping framework extends DRAG protocols to suppress multiphoton leakage in strongly driven superconducting transmons, enabling ultrafast single-qubit gates with fidelities exceeding 99.99%.

[PRX Quantum 7, 033040] Published Thu Aug 27, 2026

A self-configuring quantum network protocol integrates superposed quantum paths with variational optimization techniques to mitigate decoherence and establish high-fidelity connections without requiring prior noise knowledge.

[PRX Quantum 7, 033038] Published Tue Aug 25, 2026

Circuit quantum electrodynamics enables high-resolution spectroscopy of Pauli spin and valley blockade in bilayer graphene quantum dots, paving the way for advanced qubit control and readout.

[PRX Quantum 7, 033037] Published Mon Aug 24, 2026

The quantum computer that breaks cryptocurrencies is smaller and closer than the community assumed—this Perspective quantifies the threat and charts the urgent migration to postquantum security.

[PRX Quantum 7, 031001] Published Fri Aug 21, 2026

The feasibility of privately estimating continuous-variable quantum parameters in network scenarios is investigated through achievable protocols and no-go results.

[PRX Quantum 7, 033036] Published Fri Aug 21, 2026

Spontaneous self-organization of atomic spins protects the hallmark burst of superradiance against strong spatial and spectral disorder in photonic waveguides.

[PRX Quantum 7, 033034] Published Wed Aug 19, 2026

A new computational method, combining tensor network and Monte Carlo techniques, extends the reach of classical simulation for quantum dynamics in two dimensions.

[PRX Quantum 7, 033035] Published Wed Aug 19, 2026

Cryogenic operation and high optical access combine to enable creation of perfect neutral-atom arrays with single-atom trapping for thousands of seconds, a key step toward large-scale neutral-atom quantum computing.

[PRX Quantum 7, 033032] Published Tue Aug 18, 2026

Real-time evolution and sᴡᴀᴘ operations are combined to efficiently suppress excited-state populations using multiple copies of the quantum system.

[PRX Quantum 7, 033033] Published Tue Aug 18, 2026

By harnessing cross-Kerr interactions in a superconducting microwave Bose-Hubbard lattice, an experimental study reveals a first-order multimode dissipative phase transition in one dimension.

[PRX Quantum 7, 033030] Published Mon Aug 17, 2026

A new strategy for detecting the charging energies of quantum dots exploits the response of nuclear spins.

[PRX Quantum 7, 033028] Published Fri Aug 14, 2026

Using non-Abelian topological order, it is shown that two-dimensional, local, and topologically protected logical gates at any level of the Clifford hierarchy are achievable.

[PRX Quantum 7, 033029] Published Fri Aug 14, 2026

Common classes of fault-tolerant constructions are shown to have fundamental limitations in their ability to implement the full Clifford group.

[PRX Quantum 7, 033027] Published Thu Aug 13, 2026

A gradient-free approach to quantum optimization based on coherent simulation of time evolution can outperform gradient-descent-based methods in query complexity and robustness to barren plateaus.

[PRX Quantum 7, 033026] Published Wed Aug 12, 2026

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

[PRX Quantum 7, 032001] Published Tue Aug 11, 2026

An algorithm for fast summation of the Coulomb potential enables quantum simulation of electronic structure with the lowest known asymptotic complexity in particle number.

[PRX Quantum 7, 033025] Published Mon Aug 10, 2026

Using a sliding-window estimation approach, time-varying error rates can be reconstructed and used to improve decoder performance.

[PRX Quantum 7, 033024] Published Thu Aug 06, 2026

Researchers show that noise can destroy measurement-induced entanglement in two-dimensional circuits, with implications for the classical hardness of simulating noisy quantum computers.

[PRX Quantum 7, 033023] Published Wed Aug 05, 2026

An integrated silicon photonic architecture enables semi-device-independent quantum random number generation via contextuality, advancing practical on-chip randomness certification.

[PRX Quantum 7, 033022] Published Tue Aug 04, 2026

A new polynomial-time method designs fast, robust, programmable multiqubit entanglement gates across hundreds of trapped-ion qubits, offering a scalable route to large ion-crystal quantum computers.

[PRX Quantum 7, 033021] Published Fri Jul 31, 2026

Phase-sensitive optical parametric amplification with simple intensity detection enables loss-invariant certification of quantum non-Gaussian light, demonstrated on a heralded quasi-single-photon state.

[PRX Quantum 7, 033020] Published Thu Jul 30, 2026

An on-chip magnetic levitation architecture for robust and highly tunable electron-on-neon qubits is proposed, identifying a potential pathway toward scalable quantum computation.

[PRX Quantum 7, 033019] Published Wed Jul 29, 2026

Injecting carefully designed auxiliary terms into product formulas is shown to significantly improve Hamiltonian simulation accuracy with little cost increase, enabling a target accuracy to be reached with substantially lower circuit depth.

[PRX Quantum 7, 033018] Published Tue Jul 28, 2026

A novel transmon readout architecture leverages nonperturbative cross-Kerr coupling to achieve fast, high-fidelity measurement with built-in Purcell protection.

[PRX Quantum 7, 033017] Published Mon Jul 27, 2026

Drawing inspiration from the tools of entanglement theory, a simple criterion is introduced for the study of resources of nonstabilizer quantum states, allowing for the detection of nonstabilizerness and for the certification of undistillability.

[PRX Quantum 7, 033016] Published Fri Jul 24, 2026

A family of three-dimensional stabilizer codes achieving single-shot error correction for fermionic and chiral topological orders is proposed, introducing new platforms for fault-tolerant quantum computation.

[PRX Quantum 7, 033015] Published Tue Jul 21, 2026

By optimizing the piezoelectric transducer’s properties in bulk acoustic resonators, researchers improve phonon coherence time and cooperativity and chart a materials blueprint for quantum acoustics.

[PRX Quantum 7, 033013] Published Fri Jul 17, 2026

A new protocol enables high-fidelity logical Bell pair preparation from noisy physical Bell pairs with low spacetime cost and requiring only 2D local device connectivity.

[PRX Quantum 7, 033014] Published Tue Jul 14, 2026

Systematic corrections to belief propagation enable polynomial-time tensor network contraction algorithms while providing rigorous bounds on approximation errors.

[PRX Quantum 7, 033010] Published Thu Jul 09, 2026

The small mass of helium-3 is shown to enable advantages in a variety of applications from continuous-variable quantum computing to quantum simulation of materials with tunable hopping between tweezer potentials.

[PRX Quantum 7, 033011] Published Wed Jul 08, 2026

Fault-tolerant quantum computation with constant qubit overhead and low time overhead is enabled by parallelized code surgery and locally testable state preparation.

[PRX Quantum 7, 033012] Published Wed Jul 08, 2026

A new strategy for magic-state cultivation achieves low spacetime overhead for architectures with nonlocal connectivity.

[PRX Quantum 7, 033006] Published Tue Jul 07, 2026

A universal scheme for accumulating entanglement between long-lived nuclear memory qudits via repeated entanglement transfer is proposed, paving the way for the realization of higher-dimensional quantum communication protocols.

[PRX Quantum 7, 033007] Published Tue Jul 07, 2026

An $in$ $vacuo$ parabolic mirror with fiber in and out coupling form a compact, mechanically stable device for efficient photon extraction, enabling future quantum networking experiments with neutral atoms.

[PRX Quantum 7, 033008] Published Tue Jul 07, 2026

Shielding optical tweezer arrays from ambient blackbody radiation extends Rydberg lifetimes, mitigating the dominant relaxation errors that bottleneck two-qubit gate fidelities in neutral-atom quantum computers.

[PRX Quantum 7, 033009] Published Tue Jul 07, 2026

Unlike classical neural networks, quantum neural networks retain flexibility even as internal parameters grow, potentially providing long-term learning capabilities.

[PRX Quantum 7, 033003] Published Mon Jul 06, 2026

A cold Rydberg gas is used as a tunable dissipative many-body platform to map out non-Hermitian spectral topology, revealing interaction-driven winding numbers and scan-direction-dependent nonreciprocity.

[PRX Quantum 7, 033004] Published Mon Jul 06, 2026

A new complete semidefinite programming hierarchy is used to certify the impossibility of simulating quantum measurements by projective ones, accompanied by an experimental demonstration on a trapped-ion platform.

[PRX Quantum 7, 033005] Published Mon Jul 06, 2026

A minimal quantum-particle-detector model demonstrating fundamental trade-offs between entropy production and measurement accuracy is presented, providing new insights into the thermodynamic cost of information acquisition.

[PRX Quantum 7, 033001] Published Wed Jul 01, 2026

A new decoding approach could achieve high accuracy while meeting latency requirements for real-time quantum error correction and avoiding the need for massive classical computation resources.

[PRX Quantum 7, 033002] Published Wed Jul 01, 2026

Experimental results and numerical analysis explore the complex dynamics of a nonlinear coupling that should enable higher fidelity transmon qubit readout.

[PRX Quantum 7, 020369] Published Thu Jun 25, 2026

Decomposition of a large class of quantum field dynamics into standard optical elements allows for highly configurable and efficient execution of simulation algorithms.

[PRX Quantum 7, 020370] Published Thu Jun 25, 2026

A family of scalable circuits designed for universal quantum computing on planar chips with nearest-neighbor couplings called twisted color circuits is introduced and can achieve fault tolerance with a “just-in-time” decoder.

[PRX Quantum 7, 020367] Published Tue Jun 23, 2026

Spin-dependent squeezed states in trapped-ion platforms enable optimal displacement sensing, advancing precision metrology.

[PRX Quantum 7, 020368] Published Tue Jun 23, 2026

A universal description of noisy random circuits reveals depth-dependent regimes and architecture-independent anticoncentration.

[PRX Quantum 7, 020365] Published Mon Jun 22, 2026

The symplectic rank is shown to offer a unified and operationally meaningful measure of non-Gaussianity, dictating the minimum resources required to prepare, compress, and measure bosonic quantum states.

[PRX Quantum 7, 020366] Published Mon Jun 22, 2026

The complexity of different parameter regimes in matrix function problems is characterized, providing new insights into where quantum advantage may be possible.

[PRX Quantum 7, 020364] Published Thu Jun 18, 2026

Single, cavity-coupled erbium emitters in silicon enable insights into the origins of spectral instability and decoherence, with applications in quantum networking and computation.

[PRX Quantum 7, 020363] Published Wed Jun 17, 2026

A quantum algorithm achieving exponential speedup for a topological data analysis problem is proposed, potentially driving new practical applications in quantum computing.

[PRX Quantum 7, 020361] Published Tue Jun 16, 2026

A control framework for heterogeneous solid-state spin emitters enables high-fidelity global operations and scalable optically heralded entanglement with $O$(1) experimental overhead across 10–100 qubits.

[PRX Quantum 7, 020362] Published Tue Jun 16, 2026

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.

[PRX Quantum 7, 020101] Published Mon Jun 15, 2026

Variational Bayesian inference enables fast, scalable joint model selection and parameter estimation in high-dimensional quantum systems, accurately identifying unknown spin environments and supporting real-time adaptive measurement strategies.

[PRX Quantum 7, 020360] Published Mon Jun 15, 2026

Electromagnetically induced transparency unlocks high-fidelity, nondestructive imaging and loading of continuously operated neutral-atom arrays in finite magnetic fields.

[PRX Quantum 7, 020358] Published Fri Jun 12, 2026

Classically surrogating a small subregion of an expectation landscape can be done efficiently, potentially using initial data acquired from quantum computers.

[PRX Quantum 7, 020359] Published Fri Jun 12, 2026

A minimal model for cavity-coupled Rydberg arrays reveals how kinetically constrained long-range interactions stabilize exotic phenomena ranging from blockaded superradiance to long-range quantum scars.

[PRX Quantum 7, 020357] Published Thu Jun 11, 2026

Strong and weak symmetry reductions render optimal stabilizer decompositions tractable for multiqubit unitaries beyond previous limits.

[PRX Quantum 7, 020356] Published Wed Jun 10, 2026

A comprehensive quantum algorithmic pipeline for approximating the Jones polynomial is shown to serve as a benchmark for quantum computers and yield new insights into potential quantum advantage.

[PRX Quantum 7, 020355] Published Tue Jun 09, 2026

Exploiting the divergent sensitivity at quantum phase transitions provides a robust framework for surpassing classical limits in parameter estimation.

[PRX Quantum 7, 020201] Published Mon Jun 08, 2026

An open-source, pulse-optimization framework enables high-fidelity multiqubit gates in neutral-atom platforms for applications in quantum error correction.

[PRX Quantum 7, 020354] Published Mon Jun 08, 2026

Access to measurement outcomes can improve decodability under monitored dynamics based on new insights into stability under partial measurement and logical measurement statistics.

[PRX Quantum 7, 020352] Published Fri Jun 05, 2026

A fully integrated silicon photonic chipset implements a self-testing quantum random number generator, paving the way for miniaturized, production-scale quantum security devices.

[PRX Quantum 7, 020353] Published Fri Jun 05, 2026

Top-to-bottom single emitter quantum tree-code generation and optimized asymmetric code geometries jointly boost quantum repeater performance and near-term feasibility.

[PRX Quantum 7, 020346] Published Thu Jun 04, 2026

Mapping ancillary degrees of freedom to a one-dimensional tight-binding lattice overcomes traditional connectivity bottlenecks, enabling the near optimal quantum simulation of nonunitary dynamics.

[PRX Quantum 7, 020350] Published Thu Jun 04, 2026

A novel spectroscopy method leverages single-shot readouts to extract noise cross-correlations, successfully bridging the elusive intermediate-frequency gap in qubit noise characterization.

[PRX Quantum 7, 020351] Published Thu Jun 04, 2026

A deep-level defect in ZnO with an unusually small electron-phonon coupling, a 4-ms spin coherence time, and high spin selectivity for single-shot readout, establishes wide-band-gap oxides as a viable new platform for scalable quantum technologies.

[PRX Quantum 7, 020348] Published Wed Jun 03, 2026

Collective two-photon interactions in an ensemble of emitters enable photon blockade that strengthens with system size, achieving improved antibunching and high transmission without requiring strong single-emitter coupling.

[PRX Quantum 7, 020349] Published Wed Jun 03, 2026

Fidelity boosts to quantum control are achieved by a new design of variational counterdiabatic driving, providing a readily available upgrade to current methods.

[PRX Quantum 7, 020347] Published Tue Jun 02, 2026

Impedance-matched nondegenerate Josephson mixers break through traditional performance limits, enabling simultaneous processing of multiple quantum signals in large-scale processors.

[PRX Quantum 7, 020344] Published Mon Jun 01, 2026

By harnessing nontrivial commuting structures in quantum circuits, a novel multiproduct commutation relation significantly reduces the costly $T$-count required for fault-tolerant quantum computation.

[PRX Quantum 7, 020345] Published Mon Jun 01, 2026

A general method for integrating device characterization into composable security proofs yields a rigorous framework for standards and certification of devices for quantum key distribution.

[PRX Quantum 7, 020342] Published Fri May 29, 2026

Integration of a space-time efficient small-angle rotation error correction architecture with neutral-atom hardware and its extension to high-rate codes yields significant savings in logical layout, space, and time overhead for quantum simulation.

[PRX Quantum 7, 020343] Published Fri May 29, 2026

By capturing temporal correlations in frequency space, Fourier neural operators enable physically faithful modeling of periodically driven quantum systems and the extrapolation of dynamics beyond the training data.

[PRX Quantum 7, 020340] Published Thu May 28, 2026

Motivated by recent quantum-dot experiments, this work rigorously defines Majorana bound states in interacting systems to quantify their protection and feasibility for non-Abelian braiding.

[PRX Quantum 7, 020341] Published Thu May 28, 2026

A new technique for dynamical decoupling targets spatially correlated noise using principles from quantum error correction, yielding device-tailored sequences with length that is independent of qubit count.

[PRX Quantum 7, 020338] Published Wed May 27, 2026

Integer fluxonium qubits leverage parity symmetry and dispersive readout to convert dominant energy relaxation errors into detectable erasures, significantly boosting effective coherence times.

[PRX Quantum 7, 020339] Published Wed May 27, 2026

A principled link between noise resilience and circuit expressivity provides a roadmap for navigating barren plateaus and optimizing the training of variational quantum algorithms.

[PRX Quantum 7, 020336] Published Tue May 26, 2026

An efficient quantum algorithm solves the Abelian state hidden subgroup problem, unifying key symmetry-learning primitives.

[PRX Quantum 7, 020337] Published Tue May 26, 2026

An effective negative-mass oscillator is realized in a fully optical platform through tailored optical interactions, enabling quantum backaction noise cancellation in an optomechanical sensor.

[PRX Quantum 7, 020335] Published Fri May 22, 2026

Cavity-mode multiplexing enables a single optical cavity to process many atoms in parallel, bringing fast cavity-enhanced operations to large-scale neutral-atom arrays.

[PRX Quantum 7, 020334] Published Thu May 21, 2026

Careful tuning of qubit-coupler interactions and a new calibration protocol enable simultaneous high-fidelity single-qubit gates, controlled-$Z$ gates, and readout in superconducting circuits, advancing scalable quantum computing.

[PRX Quantum 7, 020333] Published Wed May 20, 2026

Partially randomized product formulas slash the Hamiltonian simulation overhead in quantum phase estimation, offering orders-of-magnitude resource savings for quantum chemistry benchmarks.

[PRX Quantum 7, 020332] Published Tue May 19, 2026

New probes of string breaking reveal experimentally accessible regimes in which the confining strings do not simply break but exhibit complex quantum dynamics.

[PRX Quantum 7, 020331] Published Mon May 18, 2026