IEEE Transactions on Quantum Engineering -

Exploration of Design Alternatives for Reducing Idle Time in Shor’s Algorithm: A Study on Monolithic and Distributed Quantum Systems

September 17, 2025Moritz Schmidt Abhoy Kole Leon Wichette Rolf Drechsler Frank Kirchner Elie MounzerQuantum Computing, UncategorizedArithmetic, Computer architecture, Hardware, Logic gates, Optimization, Quantum circuit, Quantum computing, Qubit, Registers, Standards

Abstract: Shor’s algorithm is one of the most prominent quantum algorithms, yet finding efficient implementations remains an active research challenge. While many approaches focus on low-level modular arithmetic optimizations, a broader perspective can provide additional opportunities for improvement. By adopting a midlevel abstraction, we analyze the algorithm as a sequence of computational tasks, enabling systematic […]

End-to-End Workflow for Machine-Learning-Based Qubit Readout With QICK and hls4ml

September 11, 2025Giuseppe Di Guglielmo Botao Du Javier Campos Alexandra Boltasseva Akash Dixit Farah FahimEnabling TechnologiesArtificial neural networks, Field programmable gate arrays, Hardware, Microprogramming, Microwave amplifiers, Microwave circuits, Qubit, Resonant frequency, Software, Table lookup

Abstract: In this article, we present an end-to-end workflow for superconducting qubit readout that embeds codesigned neural networks into the quantum instrumentation control kit (QICK). Capitalizing on the custom firmware and software of the QICK platform, which is built on Xilinx radiofrequency system-on-chip field-programmable gate arrays (FPGAs), we aim to leverage machine learning (ML) to […]

Benchmarking the Ability of a Controller to Execute Quantum Error Corrected Non-Clifford Circuits

September 9, 2025Yaniv Kurman Lior Ella Ramon Szmuk Oded Wertheim Benedikt Dorschner Sam StanwyckEnabling TechnologiesBenchmark testing, Circuits, Codes, Decoding, Fault tolerance, Fault tolerant systems, Logic gates, Measurement uncertainty, Quantum computing, Qubit

Abstract: Reaching fault-tolerant quantum computation relies on the successful implementation of non-Clifford circuits with quantum error correction (QEC). In QEC, quantum gates and measurements encode quantum information into an error-protected Hilbert space, while classical processing decodes the measurements into logical errors. QEC non-Clifford gates pose the greatest computation challenge from the classical controller’s perspective, as […]

DT-QFL: Dual-Timeline Quantum Federated Learning With Time-Symmetric Updates, Temporal Memory Kernels, and Reversed Gradient Dynamics

September 9, 2025Koffka Khan Khouler KhanQuantum Computing, UncategorizedAdaptation models, Computational modeling, Data models, Federated Learning, Kernel, Neural networks, Quantum computing, Robustness, Servers, Training

Abstract: Federated learning has emerged as a powerful paradigm for decentralized model training, ensuring privacy preservation by allowing clients to collaboratively learn a shared model without exchanging raw data. Quantum federated learning (QFL) extends this approach by leveraging quantum computing to enhance computational efficiency and security. However, existing QFL frameworks face challenges in handling temporal […]

Fast State Stabilization Using Deep Reinforcement Learning for Measurement-Based Quantum Feedback Control

September 4, 2025Chunxiang Song Yanan Liu Daoyi Dong Hidehiro YonezawaQuantum ComputingConvergence, Current measurement, Deep Reinforcement Learning, Feedback control, Quantum computing, Quantum entanglement, Quantum state, Quantum system, Trajectory, Velocity measurement

Abstract: The stabilization of quantum states is a fundamental problem for realizing various quantum technologies. Measurement-based-feedback strategies have demonstrated powerful performance, and the construction of quantum control signals using measurement information has attracted great interest. However, the interaction between quantum systems and the environment is inevitable, especially when measurements are introduced, which leads to decoherence. […]

A Grover-Meets-Simon Approach to Match Vector Boolean Functions

August 4, 2025Marco Venere; Alessandro Barenghi; Gerardo PelosiQuantum ComputingBenchmark testing, Boolean functions, Digital circuits, Integrated circuit interconnections, Libraries, Logic gates, Polynomials, Quantum algorithm, Time complexity, Vectors

Abstract: The Boolean matching problem via NP-equivalence requires determining whether two Boolean functions are equivalent or not up to a permutation and negation of the input binary variables. Its solution is a fundamental step in the electronic design automation (EDA) tool chains commonly used for digital circuit design. In fact, the library-mapping step of an […]

Generalized Quantum-Assisted Digital Signature

August 4, 2025Alberto Tarable; Rudi Paolo Paganelli; Elisabetta Storelli; Alberto Gatto; Marco FerrariQuantum InformationDigital signatures, Error analysis, Forgery, Hash functions, NIST, Protocols, Quantum channels, Quantum state, Qubit, Standards

This article introduces generalized quantum-assisted digital signature (GQaDS), an improved version of a recently proposed scheme whose information-theoretic security is inherited by adopting quantum key distribution keys for digital signature purposes. Its security against forging is computed considering a trial-and-error approach taken by the malicious forger, and GQaDS parameters are optimized via an analytical approach […]

Simulation of Shor Algorithm for Discrete Logarithm Problems With Comprehensive Pairs of Modulo p and Order q

July 21, 2025Kaito Kishi; Junpei Yamaguchi; Tetsuya Izu; Noboru KunihiroQuantum InformationComputers, Cryptography, Fourier transforms, Logic gates, Noise measurement, Quantum algorithm, Quantum circuit, Quantum computing, Qubit, Registers

Abstract: The discrete logarithm problem (DLP) over finite fields, commonly used in classical cryptography, has no known polynomial-time algorithm on classical computers. However, Shor has provided its polynomial-time algorithm on quantum computers. Nevertheless, there are only few examples simulating quantum circuits that operate on general pairs of modulo p and order q. In this article, […]

Fidelity-Aware Multipath Routing for Multipartite State Distribution in Quantum Networks

July 14, 2025Evan Sutcliffe; Alejandra BeghelliQuantum InternetNoise measurement, Performance evaluation, Probabilistic logic, Quantum entanglement, Quantum networks, Qubit, Routing, Routing protocols, Stars, Steiner trees

Abstract: We consider the problem of distributing entangled multipartite states across a quantum network with improved distribution rate and fidelity. For this, we propose fidelity-aware multipath routing protocols, assess their performance in terms of the rate and fidelity of the distributed Greenberger–Horne–Zeilinger (GHZ) states, and compare such performance against that of single-path routing. Simulation results […]

SU(4) Gate Design via Unitary Process Tomography: Its Application to Cross-Resonance-Based Superconducting Quantum Devices

July 3, 2025Michihiko Sugawara; Takahiko SatohPhysical ImplementationsCalibration, Coherence time, Logic gates, Qubit, Resonance, Schedules, Superconducting microwave devices, Systematics, Tensors, Tomography

Abstract: In this article, we present a novel approach for implementing pulse-efficient SU(4) gates on cross resonance (CR)-based superconducting quantum devices. Our method introduces a parameterized unitary derived from the CR-Hamiltonian propagator, which accounts for ZZ-interactions. Leveraging the Weyl chamber’s geometric structure, we successfully realize a continuous two-qubit basis gate, RZZ(θ), as an echo-free pulse […]