Qubit Archives - IEEE Transactions on Quantum Engineering

A Cryogenic Hybrid Photonic/CMOS Controller Architecture for Scalable Superconducting Qubit Control

October 26, 2026Bowen Liu, Zhaoran Rena HuangEarly Access, Open AccessArchitecture, Computer architecture, Frequency, Modeling, Photodetectors, Qubit, Temperature, Textile fibers, Timing, Wavelength division multiplexing

Abstract: Scaling superconducting quantum computers toward thousands of control channels remains a difficult hardware problem. Meeting this challenge requires reducing the room-temperature-to-cryogenic interconnect burden and 4 K power dissipation while retaining channel-specific programmability at 4 K. This work develops a hybrid photonic/CMOS control architecture in which optical fibers distribute shared Gaussian and derivative pulse templates, […]

Probabilistic Graybox Characterization of Quantum Devices With Bayesian Neural Networks

October 23, 2026Poramet Pathumsoot, Michal Hajdušek, Rodney Van MeterEarly Access, Open AccessClosed box, Color, Colored noise, Machine learning, Modeling, Noise, Predictive models, Qubit, Timing, Uncertainty

Abstract: While the Graybox characterization method allows for implicit noise models and is platform-agnostic, the method lacks uncertainty quantification. Characterization of quantum devices is a crucial process that enables researchers to gain insight from experimental settings. Graybox characterization combines known system dynamics with unknown transformations, where the latter is modeled using machine learning. Prediction uncertainty […]

Q-REFINE: A Quantum Datacenter Design Optimization Framework

October 19, 2026Chenliang Tian, Raj Jain, Reza Nejabati, Eneet Kaur, Ramana Kompella, Aiman Erbad, Mohamed AbdallahEarly Access, Open AccessDistance measurement, Joining processes, Limiting, Modeling, Qubit, Radio access networks, Regional area networks, Switches, Timing, Topology

Abstract: Quantum datacenter (QDC) architectures must support communication among quantum processing units (QPUs) under limited communication qubits, optical switching and measurement resources, probabilistic entanglement generation, and physical-layer noise. This paper presents Q-REFINE, a framework for Quantum Resource Exploration via Factorial & Iterative N-factor Experiments. Its measure is the completion rate, the rate at which requests […]

A Grover Search Approach to Finding Optimal Low Autocorrelation Sequences

October 13, 2026Kay Glatting, Sigurd Huber, Gerhard KriegerEarly Access, Open AccessAlgorithms, Autocorrelation, Bismuth, Business intelligence, Codes, Costing, Costs, Optimization, Qubit, Sequential analysis

Abstract: Optimal bi- or multi-phase code sequences are widely used in applications such as pulse compression in radar signals, frame synchronization in communications, and error detection in materials science. However, only a very limited number of optimal short code sequences are currently known, and existing approaches for finding new codes are computationally prohibitive due to […]

Real Variance-Based Variational Quantum Eigensolver for Non-Hermitian Matrices

October 9, 2026Durgesh Pandey, Ankit Kumar Das, P. ArumugamEarly Access, Open AccessAlgorithms, Cost function, Costing, Costs, Eigenvalues and eigenfunctions, Hardware, Matrices, Minimization, Optimization, Qubit

Abstract: Non-Hermitian operators naturally arise in the description of open quantum systems, which exhibit features such as resonances and decay processes, where the associated eigenvalues are complex. Standard quantum algorithms, including the Variational Quantum Eigensolver (VQE), are designed for Hermitian operators and are ineffective in recovering correct eigenvalues for non-Hermitian matrices. We present a systematic […]

Recursive Alternating Amplitude Embedding: A Hybrid Quantum Circuit Architecture for Balanced Depth and Width

October 6, 2026Agi Prasetiadi, Masahiro MamboEarly Access, Open AccessArchitecture, Circuits, Complexity theory, Computer architecture, Construction, Merging, Quantum state, Qubit, Trees (botanical), Vegetation

Abstract: Transforming classical data into quantum states is an important step in quantum information processing and quantum machine learning. Among various encoding methods, Amplitude Embedding is particularly attractive due to its exponential compression capability, allowing exponentially many classical values to be encoded using only a linear number of qubits. However, existing state preparation methods exhibit […]

Physics-Informed Weighted Conjugate Light Field Processing and Quantum Neural Networks for Turbulence-Distorted OAM Beam Detection

October 6, 2026Gokul Manavalan, Shlomi ArnonEarly Access, Open AccessBeams, Bit error rate, Convolutional neural networks, Decoding, Lighting, Modeling, Physics, Propagation, Qubit, Training

Abstract: Optical wireless communication (OWC) using orbital angular momentum (OAM)-encoded structured light enables high-dimensional multiplexing for next generation free-space links. However, atmospheric turbulence introduces phase distortions, modal coupling, and intensity fluctuations that significantly degrade detection performance and increase bit-error rate (BER). In this work, we propose a physics-informed hybrid quantum–classical framework based on a weighted […]

Qubit-Efficient Quantum Circuit for the Minimum Vertex Cover Problem Using Grover’s Algorithm

September 29, 2026Krissada Sarawit, Kamonluk SuksenEarly Access, Open AccessAlgorithms, Architecture, Arithmetic, Circuits, Computer architecture, Costing, Optimization, Qubit, Radiation detectors, Registers

Abstract: The Minimum Vertex Cover (MVC) problem is a fundamental NP-hard combinatorial optimization problem with applications in network security, resource allocation, and scheduling. As quantum computing moves toward fault-tolerant operation, developing qubit-efficient algorithms remains a critical challenge. This paper presents three quantum circuit architectures for solving MVC and its weighted variant using Grover’s search algorithm: […]

Integrated Superconducting High-Q Seamless Cavity for Quantum Memory and Qubit Readout Applications

August 31, 2026Mohamed F. Hagag, Kareem H. El-Gendy, Bashar Zyoud, Thomas R. Jones, Karim Seddik, Dimitrios PeroulisEarly Access, Open AccessArchitecture, Couplings, Dielectrics, Filtering, Frequency, Joining processes, Memory, Qubit, Resonators, Surfaces

Abstract: This work presents a novel micromachined, seamless sapphire–silicon hybrid evanescent-mode cavity architecture incorporating selectively engineered coupling channels and flux-tunable external coupling via a SQUID. The proposed design enables two simulated operating states within a single device: an ultra–high Q memory configuration and a high-speed readout configuration with intrinsic Purcell filtering, which is expected to […]

RuleSet Generation Framework for Application Layer Integration in Quantum Internet

August 31, 2026Rei Kawano, Shin Nishio, Hideaki Kawaguchi, Shota Nagayama, Takahiko SatohEarly Access, Open AccessInternet, Memory, Modeling, Protocols, Qubit, Repeaters, Schedules, Scheduling, Servers, Timing

Abstract: Layered architectures for the Quantum Internet have been proposed, inspired by that of the classical Internet, which has demonstrated high maintainability even in large-scale systems. While lower layers in the Quantum Internet, such as entanglement generation and distribution, have been extensively studied, the application layer — responsible for translating user requests into executable quantum-network […]