Hyperbolic color codes with constant rate and polynomial distanceRecent advances in quantum hardware relax the strict geometric-locality constraints traditionally imposed on quantum error-correcting codes, motivating interest in high-rate quantum low-density…Shun Hasegawa, Hayata Yamasaki·Sep 14, 2026SaveLearn
The Transient Counting Statistics of Autonomous Quantum ClocksAt the heart of every atomic clock is a quantum coherent emitter, the laser, that could in principle be treated autonomously. While their frequency or phase stability is typically studied in the…Oscar Arandes, Sreenath K. Manikandan·Sep 14, 2026SaveLearn
Adaptive detection of Rabi signals under composite hypothesesMotivated by searches for weak coherent drives, we formulate repeated quantum sensing with a fixed shot budget as an asymmetric composite hypothesis test. Taking Rabi sensing as a concrete example,…So Chigusa·Sep 14, 2026SaveLearn
Large-scale quantum simulations of dissipative spin-1/2 Heisenberg chainsA quantum many-body system coupled to an environment relaxes to a nonequilibrium steady state that can sustain order with no equilibrium counterpart. Computing such steady states is harder than…João C. Getelina, Andrew Cox, Muhammad Asaduzzaman et al.·Sep 14, 2026SaveLearn
Direct Observation of Dipolar-Driven Anisotropic Quantum Projection Noise in a Solid-State Spin EnsembleThe nitrogen-vacancy (NV) center in diamond is a prominent quantum-sensing platform. Combining readout at the quantum projection noise limit with strong dipolar interactions promises substantial…Tasuku Ono, Weijie Wu, Haopu Yang et al.·Sep 14, 2026SaveLearn
Unconditional Security of Discrete-Modulated CV-QKD from Infinite-Dimensional MEATDiscrete-Modulated (DM) Continuous-Variable (CV) Quantum Key Distribution (QKD) is an experimentally attractive approach to quantum cryptography, offering high key rates over metropolitan-scale…Lars Kamin, Ian George, John Burniston et al.·Sep 14, 2026SaveLearn
Strong-coupling quantum optics in free space with holes in a Fermi seaCoherent and efficient light-matter interfaces between an atom and a single mode of the electromagnetic field are essential for quantum technologies. Traditionally, these systems employ optical…Hao Wang, Hayden C. Orth, Duo Xu et al.·Sep 14, 2026SaveLearn
Achieving perfect completeness for one- and two-message quantum proof systemsWhile quantum interactive proof systems using at least three messages can achieve perfect completeness, as shown by Kitaev and Watrous (STOC 2000), whether perfect completeness is achievable for one-…Yupan Liu, Thomas Vidick·Sep 14, 2026SaveLearn
Quantum Codes for Generalized Amplitude-damping NoiseQuantum error correcting (QEC) plays a crucial role in protecting quantum information against decoherence and enabling scalable, reliable quantum computing. One of the most realistic and ubiquitous…Sourav Dutta, Anubhab Rudra, Manav Seksaria et al.·Sep 14, 2026SaveLearn
Relative Entropy Decay via BKM coercivity for Quantum Markov SemigroupsWe introduce the notion of the BKM coercivity constant and show that the positivity of this constant governs the exponential relative entropy decay of the semigroup. Indeed, we prove that the…Li Gao, Jingyu Guo·Sep 14, 2026SaveLearn
Generation of entanglement and magic via continuous homodyne monitoring of a qubit pairContinuous weak measurements of quantum systems are of great relevance in quantum foundations and applications. They can be achieved by probing the quantum system of interest by repeatedly measuring…Debmalya Das, Giuseppe Magnifico, Maria Maffei·Sep 14, 2026SaveLearn
Probing Residual Noise at a Decoherence Sweet Spot in a 28Si/SiGe Spin QubitIn 28Si/SiGe spin qubits with micromagnets, the longitudinal stray field gradient transduces charge noise into qubit frequency noise and limits coherence. We compare two neighboring qubits in…Shinwoo Lee, Hanseo Sohn, Jaemin Park et al.·Sep 14, 2026SaveLearn
Limits on the atomic description of four-wave mixingThe limits of the well-established single-atom model for describing photon-pair generation via four-wave mixing in a diamond configuration in atomic ensembles are experimentally tested. Using a…Irvin F. Ángeles-Aguillón, Nieves Arias-Téllez, Pablo Yanes-Thomas et al.·Sep 14, 2026SaveLearn
Instantiating Microcrypt: Obstacles and opportunities via tailored state certificationRecent work has introduced the Hamiltonian phase state (HPS) assumptions, which postulate that Hamiltonian phase states can be used to instantiate pseudorandom and one-way state generators.…Jose Carrasco, Jens Eisert, Soumik Ghosh et al.·Sep 14, 2026SaveLearn
Higher-order quantum thermodynamics: equilibrium and causal structureQuantum thermodynamics is traditionally formulated as a theory of equilibrium states and state transformations. Recent advances in higher-order quantum transformations, which describe physical…Simon Milz, Kyrylo Simonov, Zoltán Zimborás et al.·Sep 14, 2026SaveLearn
Security framework for practical quantum key distribution with imperfect devicesPractical quantum key distribution (QKD) systems inevitably exhibit imperfections in both the source and detector. At the same time, the behavior of these imperfect devices is never exactly known due…Jerome Wiesemann, John Burniston, Devashish Tupkary et al.·Sep 14, 2026SaveLearn
Optimal entanglement-assisted source coding under a balanced-difference promiseEntanglement can reduce the communication required for coding tasks, but establishing the minimum achievable cost is essential to understanding its limits. We address this question in a zero-error…Julius A. Zeiss·Sep 14, 2026SaveLearn
Pauli spectrum and nonstabilizerness of random fermionic Gaussian statesWe characterize the magic of random fermionic Gaussian states through their Pauli spectrum and their stabilizer entropies. For the Haar ensemble of Majorana Gaussian states we derive closed…Xhek Turkeshi, Piotr Sierant, Poetri Sonya Tarabunga·Sep 14, 2026SaveLearn
Disentangling QAOA: From Weakly Entangled Circuits to a Classical QUBO SolverThe role of entanglement in quantum optimization remains actively debated. To address this question, we focus on the fixed-parameter expanding-depth regime of the quantum approximate optimization…Boris I. Bantysh, Andrey Yu. Chernyavskiy, Denis A. Kulikov et al.·Sep 14, 2026SaveLearn
A Modular, Topology-Aware Software Stack for Entanglement-Based Distributed Quantum ComputingDistributed quantum computing (DQC) seeks to scale beyond the limits of monolithic processors by interconnecting multiple quantum processing units (QPUs) through entanglement-based links. Realizing…Luke Andreesen, Shobhit Gupta, Sean Sullivan et al.·Sep 14, 2026SaveLearn
Performance in Symmetry-Restricted Searches for Post-Quantum CorrelationsSearches for post-quantum correlations depend on two distinct ingredients: how abundant such correlations are in the underlying correlation space and how efficiently the chosen representation…Marek Gazdzicki, Francesco Giacosa·Sep 14, 2026SaveLearn
OpenQARP: a modular framework for quantum application researchWe introduce OpenQARP, the Open Quantum Application Research Package: an open-source Python framework for quantum application research, built on a compiled C++ core. In OpenQARP, an application is…Stefano Scali, Vicente P. Soloviev, Antonio Márquez Romero et al.·Sep 14, 2026SaveLearn
Distribution of light-matter quantum correlations with a temporally multiplexed solid-state quantum memory arrayMultiplexed quantum memories increase the entanglement distribution rate in long-distance quantum repeater architectures by harnessing storage in several degrees of freedom. Here, we report on the…Aya Mneimneh, Susana Plascencia, Manuel Gundin et al.·Sep 14, 2026SaveLearn
Efficient quantum state tomography with two complementary projective measurementsQuantum state tomography (QST) is of fundamental importance to characterize quantum systems in quantum information processing, but its practical implementation is severely hindered by the exponential…Xiang Li, Yong Wang, Lijun Liu et al.·Sep 14, 2026SaveLearn
A Nonrecursive Lindblad Quantization of Dissipative Polynomial DynamicsWe present a direct and nonrecursive construction that maps an arbitrary planar polynomial dissipative flow α=h(α,α*) to an open quantum system in Gorini--Kossakowski--Sudarshan--Lindblad…Tingfei Li·Sep 14, 2026SaveLearn