Classical and Quantum MacWilliams Transforms as Spin KinematicsSpin is the hidden engine behind the zoo of MacWilliams transforms in weight enumerator theories - not only for qubits and qudits, but even for classical codes. From nothing more than a split into…Eric Kubischta, Ian Teixeira·Jul 29, 2026SaveLearn
OQRAM: Oblivious Quantum Random Access Memory for Securing Delegated Quantum QueriesQuantum query is a basic subroutine in many quantum algorithms, and Quantum Random Access Memory (QRAM) provides a natural way to realize such coherent query access. In delegated settings, however, a…Shifan Xu, Yizhuo Tan, Yongshan Ding et al.·Jul 29, 2026SaveLearn
Training Quantum DragonsThe Non-Equilibrium Green's Function (NEGF) is the standard formalism for nano-scale electron transport. By recasting the NEGF scattering problem as a linear system of equations whose solution…Muhammad Yusf, Bhola Devkota, Mark A. Novotny et al.·Jul 29, 2026SaveLearn
Improved Methods for Determining Quantum Error Correcting Code Performance and Fault ToleranceOne of the central challenges in quantum error correction is determining the performance of a code in the low-error regimes needed to implement utility-scale computations. While performance at these…Michael Mullan, Matthew Weippert, Winton Brown·Jul 29, 2026SaveLearn
Parity-Based Time-Bin Encoding Enabling SWAP Between Polarization and Time-Bin QubitsMulti-degree-of-freedom photonic quantum processing requires routing between degree-of-freedom (DOF) qubit encodings on a single photon. A SWAP between polarization and time-bin qubits is…Adam Sultan, Connor Kupchak·Jul 29, 2026SaveLearn
Hardware-efficient erasure-error detection with an integer fluxoniumErasure-error detection can improve the efficiency of quantum error correction by revealing the times and locations of their error events. In this work, we demonstrate erasure conversions and…Junyoung An, Helin Zhang, Jeffrey M. Gertler et al.·Jul 29, 2026SaveLearn
The Keyl-Werner algorithm is not optimal for spectrum estimationWe give an algorithm which, given n = O(d2 · ((d)/(d))2) copies of ρ, estimates the eigenvalues of ρ to constant error in total variation distance. Thus, we can learn the…Angelos Pelecanos, Jack Spilecki, Ewin Tang et al.·Jul 29, 2026SaveLearn
Ky Fan majorization for binary tensor productsWe provide a short proof of a Ky Fan-type majorization relation for the singular values of a sum of binary tensor products of matrices. This generalizes Alhejji's result (arXiv:2410.18254) from…Michael M. Wolf, Yuanheng Zhou·Jul 29, 2026SaveLearn
Effective Hamiltonians for Predictive Quantum ControlHigh-fidelity quantum control relies on accurate models of driven dynamics. We examine this re- quirement for single-qubit gates in superconducting transmons by comparing control pulses derived from…Razvan Stanescu, Hugo Ribeiro·Jul 29, 2026SaveLearn
Native CCZ Gate with Fluxonium Qubits and a Microwave-Driven CouplerNative multi-qubit gates could reduce the overhead associated with decompositions into single- and two-qubit operations, but whether they can simultaneously provide high fidelity, simple control and…Grigoriy S. Mazhorin, Tatyana A. Chudakova, Alena S. Kazmina et al.·Jul 29, 2026SaveLearn
Adaptive Multi-Backend Simulation of Near-Clifford Quantum Circuits via Spatial Stabilizer-Frame PartitioningWe present an exact amplitude simulator for Clifford+T quantum circuits that combines a Feynman path sum across a balanced qubit bipartition with stabilizer-frame simulation on each half. The…Héctor J. García·Jul 29, 2026SaveLearn
Optimising Trotter-Suzuki Simulations of Markovian Open Quantum Systems via Classical SearchSimulating an open quantum system on a digital quantum computer often involves the use of Trotter-Suzuki (TS) Product Formulas (PF) to approximate the system's time evolution. Precise estimates…S. M. Pillay, I. J. David, I. Sinayskiy et al.·Jul 29, 2026SaveLearn
Quasi-polar Decomposition of Quantum Neural Networks via Adaptive Non-local ObservablesWe use Diagonal Adaptive Non-local Observables (DANO) as a canonical decomposition for studying Variational Quantum Circuit model evolution. Separating each learned observable into a diagonal…Shih-Hao Ho, Yan Li, Huan-Hsin Tseng et al.·Jul 29, 2026SaveLearn
Unconventional Thermalization of a Three-Wave-Mixing ModelUnderstanding the boundaries between quantum thermalization and localization in many-body systems remains a central frontier of condensed matter and quantum information science. In this work, we…Evangelos Varvelis, Miriam Resch, Joachim Ankerhold·Jul 29, 2026SaveLearn
Reliability Functions of Quantum Soft Covering and Privacy Amplification via a Mixed-Order Rényi DivergenceIn this paper, we introduce a novel mixed-order Rényi divergence and investigate its fundamental properties. Using this divergence, we define a family of mixed-order order-two Rényi mutual…Shi-Bing Li, Hongsen Qiu, Xinyu Zhang·Jul 29, 2026SaveLearn
Finite size scaling of bitstring probability distributions for Rydberg arraysWe calculate the probabilities p\n\ of the measured bitstrings \n\ for the vacuum of Rydberg ladders with Nq atoms. As Nq increases, the p\n\ decrease but become more dense in…Zane Ozzello, Avi Kaufman, Yannick Meurice·Jul 29, 2026SaveLearn
Embedded quantum computing for many-body surface reactionPredictive simulations of catalytic interfaces require correlated electronic-structure treatments that describe localized chemical transformations while retaining the influence of the extended…Dedong Wan, Xiaopeng Li, Yi Fan et al.·Jul 29, 2026SaveLearn
Two-state generator extraction: property currents and a two-layer arrow of time in pre- and post-selected quantum dynamicsConditioning on both past and future assigns intermediate-time properties a causal observer does not; these time-symmetric assignments obey exact symmetry theorems and are measurable from…Seiki Saito·Jul 29, 2026SaveLearn
Two-photon interference from as-grown InAsP/InP quantum dots under detuned excitationIn this study, we investigate as-grown InAsP/InP quantum dots emitting in the third telecommunication window under detuned quasi-resonant excitation. A large excitation-emission detuning of 32 meV…Maja Wasiluk, Anna Musiał, Paweł Mrowiński et al.·Jul 29, 2026SaveLearn
Sparse Quantum Voxel Encoding for Readout-Efficient Molecular Geometry Reconstruction on NISQ DevicesWe propose a sparse computational-basis encoding of voxelized molecular geometries that converts molecular reconstruction from full-state tomography into support recovery by computational-basis…Eros De Simone, Giuseppe Bifulco, Lorenza Di Mauro et al.·Jul 29, 2026SaveLearn
Optimization of C-band quantum traffic coexisting with O-band classical traffic: preliminary resultsThe coexistence of quantum and classical signals in the same optical fiber is a critical challenge for the deployment of quantum networks. Indeed, selecting an optimal channel for quantum signal…Laura d'Avossa, Elena Montella, Marco Grillo et al.·Jul 29, 2026SaveLearn
Revival of transport reciprocity via quantum interference in asymmetric nonlinear devicesStructural asymmetry combined with optical nonlinearity often leads to nonreciprocal light transport. We explore the mechanism by which 1-photon interference effects can revive reciprocity in such…Rupak Bag, Dibyendu Roy·Jul 29, 2026SaveLearn
Calibrated Pressure-Observable Born and Hessian Actions for Quantum-Assisted Waveform InversionWe construct a pressure-consistent operator-and-readout interface for Born, adjoint, and Gauss--Newton actions in constant-density acoustic full-waveform inversion (FWI) using Schrödingerised…Guanyu Li, Jiwei Jia, Yu Wang et al.·Jul 29, 2026SaveLearn
Analytical Series Expansion for Efficient Gradient Evaluation in Multi-Qubit Optimal ControlThe open-loop optimization of quantum dynamics using gradient-based quantum optimal control methods involves calculating the time-ordered propagator and its gradient. In this Letter, we present a…Ashutosh Mishra, Elena Lupo, Frank K. Wilhelm et al.·Jul 29, 2026SaveLearn
Enhancing the security of coherent one-way quantum key distribution using CHSH correlationsThe coherent one-way (COW) protocol is a quantum key distribution scheme that has attracted significant attention, leading to the development and commercialization of practical implementations.…Mahdi Shaban, Farnaz Farman, Alireza Bahrampour·Jul 29, 2026SaveLearn