Joint parameter estimation and multidimensional reconciliation for continuous-variable quantum key distributionAccurate quantum channel parameter estimation is essential for effective information reconciliation in continuous-variable quantum key distribution (CV-QKD). However, conventional maximum likelihood…Jisheng Dai, Xue-Qin Jiang, Peng Huang et al.·Jul 24, 2026SaveLearn
Logical accreditation: a framework for efficient certification of fault-tolerant computationsAs fault-tolerant quantum computers scale, certifying the accuracy of computations performed with encoded logical qubits will soon become classically intractable. This creates a critical need for…James Mills, Adithya Sireesh, Dominik Leichtle et al.·Jul 24, 2026SaveLearn
Barren-plateau free variational quantum simulation of Z2 lattice gauge theoriesIn this work, we design a variational quantum eigensolver (VQE) suitable for investigating ground states and static string breaking in a Z2 lattice gauge theory (LGT). We consider a…Fariha Azad, Matteo Inajetovic, Stefan Kühn et al.·Jul 24, 2026SaveLearn
Mixed spin-boson coupling for qubit readout with suppressed residual shot-noise dephasingDirect dipole coupling between a two-level system and a bosonic mode describes the interactions present in a wide range of physical platforms. In this work, we study a coupling that is mixed between…Jinlun Hu, Antonio L. R. Manesco, André Melo et al.·Jul 24, 2026SaveLearn
Molecular Quantum Control Algorithm Design by Reinforcement LearningPrecision measurements of molecules offer an unparalleled paradigm to probe physics beyond the Standard Model. The rich internal structure within these molecules makes them exquisite sensors for…Anastasia Pipi, Xuecheng Tao, Arianna Wu et al.·Jul 24, 2026SaveLearn
Passive and active suppression of transduced noise in silicon spin qubitsAddressing and mitigating decoherence sources plays an essential role in the development of a scalable quantum computing system, which requires low gate errors to be consistently maintained…Jaemin Park, Hyeongyu Jang, Hanseo Sohn et al.·Jul 24, 2026SaveLearn
Rydberg quantum antennas for chip-interfaced single-photon source arrayWe propose a Rydberg quantum antenna, consisting of a one-dimensional chain of neutral atoms trapped in a standing-wave optical tweezer, as a chip-interfaced single-photon source. Rydberg blockade…Yan-Lei Zhang, Dong-Qi Ma, Guang-Jie Chen et al.·Jul 23, 2026SaveLearn
Quantum Simulation of SPAD in the Space Radiation EnvironmentSingle-Photon Avalanche Diodes (SPADs) are critical components of emerging quantum communication networks that detect single photons. They are placed in satellites for long-distance communication and…Durgesh Tinker, Kavita Lalwani·Jul 23, 2026SaveLearn
SSP-QST: Spectral Subspace Purification for Photonic Quantum State TomographyPhotonic quantum sensing often uses low-rank entangled probes such as Greenberger-Horne-Zeilinger (GHZ), Bell, and NOON states. Although these probes are ideally rank-1, practical quantum state…Anuvab Sen, Saibal Mukhopadhyay·Jul 23, 2026SaveLearn
Spectral Gap of the Davies Generator for the Mean-Field Heisenberg ModelThe mean-field Heisenberg ferromagnet is a quantum spin model on the complete graph with isotropic spin-1/2 interactions. This non-commuting Hamiltonian is permutation and SU(2) invariant,…Joao Basso, Thiago Bergamaschi, Lin Lin et al.·Jul 23, 2026SaveLearn
Tunable nonlinear electromechanics at the zero-point motion scaleNonlinearity at the scale of zero-point motion opens new possibilities for the control and readout of nanomechanical systems, but achieving this remains a formidable challenge. Here we demonstrate…Christoffer B. Møller, Roger Tormo-Queralt, Elsa Vázquez-Rodríguez et al.·Jul 23, 2026SaveLearn
Deleterious effect of photon-phonon coupling on microcavities in their application as quantum sourcesIn quantum systems, the contact with the environment is detrimental to the purity of the state, thus limiting the practical use of entangled sources in quantum information applications. This loss of…Y. Sacha C. L. S., G. C. Rickli, J. Dipold et al.·Jul 23, 2026SaveLearn
Quantum Cellular Automata from Kramers-Wannier Dualities and Modular RelationsRecent work has constructed higher-dimensional analogs of non-invertible symmetries similar to 1+1d Kramers-Wannier duality. Although their continuum descriptions often treat purely gravitational…Carolyn Zhang, Po-Shen Hsin·Jul 23, 2026SaveLearn
Electron shuttling as a probe for charge defectsSilicon spin qubits are a leading platform for scalable quantum computing, but their performance is limited by charge noise, widely attributed to two-level fluctuators (TLFs). The location of…Hamza Jnane, Tamas Daniel Lipovics, Guido Burkard·Jul 23, 2026SaveLearn
Resolving topological order crossovers on NISQ hardwareTopological phases of matter provide a promising route toward robust quantum information processing, but on present-day noisy intermediate-scale quantum devices the experimentally relevant question…Ruizhe Shen, Yin Zhong, Ching Hua Lee·Jul 23, 2026SaveLearn
Mixed-state topological order and error-correction thresholds in non-Abelian codes: rigorous resultsWe present a versatile and mathematically rigorous technique for bounding recovery thresholds in topological codes subject to noise. Our method captures the effect of applying an arbitrary (possibly…Sun Woo P. Kim, Max McGinley·Jul 23, 2026SaveLearn
Frame-Dependent Traces and the Third-Particle ParadoxThe Paradox of the Third Particle arises when comparing subsystem descriptions across Quantum Reference Frame (QRF) perspectives. We isolate two distinct origins of the Paradox: the QRF covariance of…Alessandro Palumbo, Luca Apadula·Jul 23, 2026SaveLearn
Non-Clifford quantum cellular automata from invertible topological quantum field theoriesQuantum cellular automata (QCAs) describe locality-preserving quantum dynamics and connect quantum information, many-body physics, and topological quantum field theory (TQFT). Constructing a QCA from…Meng Sun, Zongyuan Wang, Bowen Yang et al.·Jul 23, 2026SaveLearn
Hash-QNeRF: Multiresolution Hash Encoding for Quantum Neural Radiance FieldsNeural Radiance Fields (NeRF) have revolutionized novel view synthesis, yet their classical implementations remain computationally intensive for high-fidelity rendering. QNeRF recently demonstrated…Digonto Biswas, Tana Ballove, Anjan Bandyopadhyay et al.·Jul 23, 2026SaveLearn
Tunable Mpemba Effect in a Prethermal Many-Body Spin NetworkRelaxation in an interacting system is determined not only by its initial distance from equilibrium, but also by the relaxation modes populated by the initial state. Here we experimentally observe…Chaitali Shah, Cooper M. Selco, Leo Joon Il Moon et al.·Jul 23, 2026SaveLearn
Quantum Correlations in Frustrated Three-Body SystemsMany physical systems are not understood from first principles due to the presence of multi-body quantum correlations. The effort taken to simulate such systems on classical computers increases…Chaitali Shah, Apoorva D. Patel·Jul 23, 2026SaveLearn
Absent, Not Faint: Fisher-Information Limits and a Logarithmic Measurement-Design Cure for Passive Characterization of Coherent Qubit NoiseCalibrating a quantum processor means estimating error parameters, and estimation theory usually assumes a parameter hard to estimate is faint: its signal is weak but present, so more repetitions or…Yi Pan, Meng Hsiu Tsai, Weihang You et al.·Jul 23, 2026SaveLearn
Flow-based Phase-space Tomography of Continuous-variable Quantum StatesContinuous-variable quantum state tomography is limited by the cost of resolving non-Gaussian structure in high-dimensional phase space. We introduce QST-Flow, a quantum state tomography framework…Owen Dugan, Rumen Dangovski, Peter Y. Lu et al.·Jul 23, 2026SaveLearn
A geometric framework for spin relaxationSpin relaxation is conventionally described by two independent phenomenological rates - longitudinal (R1) and transverse (R2) - whose separation obscures a deeper structural unity. Here we…Sophia N. Fricke, Kieren A. Harkins, Ashok Ajoy et al.·Jul 23, 2026SaveLearn
Fault-tolerant quantum algorithms for simulating atomic nucleiTo maximize the value of fault-tolerant quantum computers, it is essential to develop concrete applications beyond well-established domains such as chemistry and condensed-matter physics. Here we…James Benstead, Michael Garn, Neil Gaspar et al.·Jul 23, 2026SaveLearn