Fine-Grained Complexity for Quantum Problems from Size-Preserving Circuit-to-Hamiltonian ConstructionsThe local Hamiltonian (LH) problem is the canonical QMA-complete problem introduced by Kitaev. In this paper, we show its hardness in a very strong sense: we show that the 3-local…Nai-Hui Chia, Atsuya Hasegawa, François Le Gall et al.·Aug 6, 2026SaveLearn
Detailed, interpretable characterization of mid-circuit measurement on a transmon qubitMid-circuit measurements (MCMs) are critical components of the quantum error correction protocols expected to enable utility-scale quantum computing. MCMs can be modeled by quantum instruments (a…Piper C. Wysocki, Luke D. Burkhart, Madeline H. Morocco et al.·Aug 6, 2026SaveLearn
Qhronology: A Python package for studying quantum models of closed timelike curvesQhronology is a novel scientific-computing package for studying quantum models of closed timelike curves (CTCs) and simulating general quantum information processing and computation. Written in…Lachlan G. Bishop·Aug 6, 2026SaveLearn
Broadband Spatio-Spectral Mode Conversion via Four-Wave MixingWe introduce a framework for scalable and broadband free-space phase-matched four-wave mixing in ring resonators. This method for four-wave mixing reduces the complexity of coupling an emitter to a…Helaman Flores, Mahmoud Jalali Mehrabad, Siavash Mirzaei-Ghormish et al.·Aug 6, 2026SaveLearn
Sequences of Bivariate Bicycle Codes from Covering GraphsWe show that given an instance of a bivariate bicycle (BB) code, it is possible to generate an infinite sequence of new BB codes using increasingly large covering graphs of the original code's…Benjamin C. B. Symons, Abhishek Rajput, Dan E. Browne·Aug 6, 2026SaveLearn
Unifying Qubit Routing Across Diverse Quantum ISAs via Canonical RepresentationQubit mapping/routing is a critical stage in compilation for both near-term and fault-tolerant quantum computers, yet existing scalable methods typically impose several times the routing overhead in…Zhaohui Yang, Kai Zhang, Xinyang Tian et al.·Aug 6, 2026SaveLearn
Classical Noise Inversion for Error-Propagatable Circuits with Minimal Overhead under General Gate-Dependent NoiseQuantum error mitigation (QEM) is critical for extracting reliable computations from noisy quantum processors, proving itself essential not only in the near term but also as a valuable supplement to…Dayue Qin, Ying Li, You Zhou·Aug 6, 2026SaveLearn
Pulsed Generation of Continuous-Variable Cluster States in a Phononic Quantum NetworkCluster states are multipartite entangled states that are maximally connected and resilient to decoherence, making them valuable resources for quantum information processing. Continuous-variable (CV)…A. Govindarajan, M. Mazzei, H. Wang et al.·Aug 6, 2026SaveLearn
Entanglement distribution modeling with quantum memories in a global and local clock systemWe report an innovative model for predicting entanglement distribution between end parties of a quantum network using our in-house simulation algorithm. Our implementation is based on stochastic…Tasmi R. Ahmed, Fares Nada, Amber Hussain et al.·Aug 6, 2026SaveLearn
Quantum Walk on a Line with Absorbing BoundariesAbsorption of two-state coined quantum walks on a finite line with two sinks located at N and -N is investigated. Elaborating on the results of Konno et al., J. Phys. A: Math. Gen. 36 241…Ammara Ammara, Václav Potoček, Martin Štefaňák et al.·Aug 6, 2026SaveLearn
Convergence and efficiency proof of quantum imaginary time evolution for bounded order systemsMany current and near-future applications of quantum computing utilise parametric families of quantum circuits and variational methods that can suffer from obstacles including non-convergence to the…Tobias Hartung, Karl Jansen·Aug 6, 2026SaveLearn
Universal spectral bounds for the quantum Rabi model: Reformulating Braak's conjectureThe quantum Rabi model is a paradigmatic example of a minimal yet nontrivial light-matter interaction, whose spectrum is transcendental yet exhibits a number of regularities. Braak observed that the…Alfonso Lanuza·Aug 6, 2026SaveLearn
Quantum Mechanics as a Reversible Diffusion TheoryThis paper proposes an interpretation of quantum mechanics, relying on the time-symmetric stochastic dynamics of quantum particles and on non-classical probability theory. Our main purpose is to…Charalampos Antonakos·Aug 6, 2026SaveLearn
Quantum Noise Mitigation with Adaptive Zero-Noise Extrapolation: A Contextual Multi-Armed Bandits ApproachVariational quantum circuits (VQCs) are central to near-term quantum computing, yet their practical deployment is severely hindered by noise. While existing error mitigation methods, such as…Ratun Rahman, Dinh C. Nguyen·Aug 5, 2026SaveLearn
Experimental demonstration of the Quantum Fourier Transform on up to 100 qubits using a convolutional compilation strategyWe present and experimentally validate the `Convolutional QFT': a constructive compilation strategy for the Quantum Fourier Transform (QFT) subroutine on a linear nearest neighbor (LNN) qubit…Paul Coote, Michael J. Biercuk, Yuval Baum·Aug 5, 2026SaveLearn
Qutrit entanglement and joint multi-parameter estimation in an optical clock platformQuantum metrology harnesses entanglement to improve measurement precision beyond classical limits. While standard protocols rely on two-level qubits to estimate a single parameter, extending them to…Ohad Lib, Shuheng Liu, Maximilian Ammenwerth et al.·Aug 5, 2026SaveLearn
Interferometric Quantum Polynomial Chaos Expansion as a Generative Model for Calorimeter Shower SimulationWe present the quantum polynomial chaos expansion, a generative algorithm in which a single circuit is the entire model, and we use it to learn calorimeter images. In a classical chaos expansion the…Jamal Slim, Saverio Monaco, Florian Rehm et al.·Aug 5, 2026SaveLearn
Feasibility-Preserving Quantum Search for Constrained Transportation RoutingTransportation routing problems such as the Traveling Salesperson Problem (TSP) and the Vehicle Routing Problem (VRP) are characterized by strict feasibility requirements involving customer…Dahye Kim, Monika Filipovska·Aug 5, 2026SaveLearn
Quantum Error Mitigation with Diffusion-Like ModelsCoupling between a quantum system and its environment causes decoherence by transferring information from the system to environmental degrees of freedom. When discretized in time, such interactions…Yuval Idan, Ofek Nourian, Elad Mentovich et al.·Aug 5, 2026SaveLearn
Maximally entangled states are not complete for pseudo-telepathyOne of the longstanding open problems in quantum nonlocality is to determine if maximally entangled states are complete for bipartite pseudo-telepathic games: namely, if every nonlocal game which…Olivier Lalonde·Aug 5, 2026SaveLearn
QBism on Locality and NonlocalityRecently Pienaar (2026), building on work of Cavalcanti (2021), has shown that QBism cannot always assume distinct observers' quantum-measurement outcomes---say, of Wigner and his friend---are…John B. DeBrota, Christopher A. Fuchs, Rüdiger Schack·Aug 5, 2026SaveLearn
The Hidden Subgroup Problem in Semidirect Products and Quasi-Hamiltonian GroupsSeveral early quantum algorithms, including Simon's algorithm and Shor's period-finding are instances of the hidden subgroup problem (HSP) over finite abelian groups. No polynomial-time…Mauro E. S. Morales·Aug 5, 2026SaveLearn
Machine learning for sample-based quantum diagonalization: a review of generative configuration recovery and the classical-simulability frontierSample-based quantum diagonalization (SQD), equivalently quantum-selected configuration interaction (QSCI), has become a centre of gravity of pre-fault-tolerant quantum chemistry: a processor samples…Nicolás Bonilla Vargas·Aug 5, 2026SaveLearn
Unidirectional Dark-to-Bright Rescue in Cavity-Coupled Quantum TransportStrong light-matter coupling in optical microcavities can transport energy ballistically across an emitter array, but the same coupling buries most of the excitation in a manifold of dark states that…Jack Diab, Arpit Arora, Taylor L. Patti et al.·Aug 5, 2026SaveLearn
Quantum channel learning with limited parallel accessQuantum channels can be characterized by their action on an orthogonal operator basis, where these operators are related to observable properties of the quantum system. For qudit and multimode…Mahadevan Subramanian, Hyukgun Kwon, Liang Jiang·Aug 5, 2026SaveLearn