Timing Archives - IEEE Transactions on Quantum Engineering

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 […]

Interconnecting Regional QKD Networks: Hybrid Key Delivery Across Quantum Domains

August 31, 2026David Barral, Aitor Brazaola-Vicario, Diego Cifrián, Natalia Costas, Gonzalo Blázquez, Ana Fernández-Vilas, Iago Fernández Llovo, Pedro Otero, Pablo Pío Rejo, Alejandra Ruiz, Juan Villasuso, Manuel Fernández-VeigaEarly Access, Open AccessArchitecture, Computer architecture, Databases, ETSI, Joining processes, Management, Quantum key distribution, Relays, Security, Timing

Abstract: QKD technology is being increasingly adopted inside the network core for protecting information transport against any form of computational attacks. However, the use of QKD for wide-area internetworking is still challenging and costly, due to its strong trust assumptions and the low achievable key rates in long QKD links. This paper presents a standards-driven […]

Field Demonstration of a Passive Phase and Polarization Stabilization Architecture for Sagnac Twin-Field QKD

August 28, 2026Martin Clason, Christiano M. S. do Nascimento, Felipe Calliari, Joakim Argillander, Guilherme B. Xavier, Guilherme P. TemporãoEarly Access, Open AccessFrequency modulation, Generators, Interference, Joining processes, Optical fibers, Polarization, Quantum communication, Quantum key distribution, Textile fibers, Timing

Abstract: Twin-field quantum key distribution (TF-QKD) relies on first-order interference between coherent optical fields combined at an intermediate station, which requires simultaneous phase and polarization stabilization. We present a Sagnac-like interferometric architecture arranged in a hybrid star–bus network topology that enables any-to-any connectivity while providing passive stabilization of phase and polarization fluctuations for multiple wavelengths. […]

Dissipative Feedback and Hybrid Lyapunov-Reinforcement Learning Control for NV-Center Quantum Sensing

August 17, 2026Yuxuan Zhao, Xiaofeng Jiang, Tianxiang Xiong, Sen Kuang, Jian YangEarly Access, Open AccessDynamics, Feedback, Learning (artificial intelligence), Modeling, Optimization, Quantum sensing, Reinforcement learning, Sensitivity, Timing, Training

Abstract: Practical NV-center magnetometry requires both accurate modeling of open quantum dynamics and robust control under environmental drift. However, commonly used perturbative descriptions inadequately capture dissipative processes, while existing control strategies remain individually limited: open-loop protocols cannot adapt to unknown frequency variations, Lyapunov feedback typically converges only to a neighborhood of the optimal sensing state, […]

Network-Based Quantum Computing: an Efficient Design Framework for Many-small-node Distributed Fault-Tolerant Quantum Computing

August 10, 2026Soshun Naito, Yasunari Suzuki, Yuuki TokunagaEarly Access, Open AccessAlgorithms, Circuits, Design methodology, Joining processes, Optimization, Ports (computers), Quantum computing, Qubit, Switches, Timing

Abstract: In fault-tolerant quantum computing, a large number of physical qubits are required to construct a single logical qubit, and a single quantum node may be able to hold only a small number of logical qubits. In such a case, the idea of distributed fault-tolerant quantum computing (DFTQC) is important to demonstrate large-scale quantum computation […]

Rydberg Atom Electric Field Sensors as Linear Time-invariant Systems

August 6, 2026Neel Malvania, Garry Jacyna, Bonnie L. Schmittberger Marlow, Zachary N. Hardesty-Shaw, Kathryn L. Nicolich, Kelly M. Backes, Jamie L. MacLennan, Charlie T. FancherEarly Access, Open AccessElectric fields, Frequency, Image sensors, Matrices, Modeling, Radio frequency, Rydberg atoms, Steady-state, Timing, Transfer functions

Abstract: Over the past decade, Rydberg atom electric field sensors have been under investigation as potential alternatives or complements to conventional antenna-based receivers for select applications in RF communications, remote sensing, and precision metrology. To understand the potential utility of these devices for various use cases, it is crucial to develop models that accurately predict […]

Boosting Information Reconciliation for Decoy-State Quantum Key Distribution Over a Satellite Downlink Channel

July 22, 2026T. Scarinzi, D. Orsucci, M. Ferrari, L. BarlettaEarly Access, Open AccessArrays, Codes, Distance measurement, Joining processes, Modeling, Quantum key distribution, Receivers, Satellites, Simulation, Timing

Abstract: Quantum Key Distribution (QKD) is a cryptographic solution that leverages the properties of quantum mechanics to be resistant and secure even against an attacker with unlimited computational power. Satellite-based links are important in QKD because they can reach distances that the best fiber systems cannot. However, links between satellites in Low Earth Orbit (LEO) […]

Matrix Low-dimensional Qubit Casting Based Quantum Electromagnetic Transient Network Simulation Program

July 13, 2026Qi Lou, Yijun Xu, Wei GuEarly Access, Open AccessAdmittance, Circuits, Costing, Matrices, Modeling, Quantum circuit, Qubit, Simulation, Switches, Timing

Abstract: In modern power systems, the integration of converter-interfaced generations requires the development of electromagnetic transient network simulation programs (EMTP) that can capture rapid fluctuations. However, as the power system scales, the EMTP’s computing complexity increases exponentially, leading to a curse of dimensionality that hinders its practical application. Facing this challenge, quantum computing offers a […]

Automated Active-Visibility-Control Loop for Stabilized DPS-QKD Decoding under Dynamic Wavelength Drift

July 10, 2026Kuan-Wei Hu, Chih-Hsien Cheng, Atsushi Matsumoto, Kouichi Akahane, Gong-Ru LinEarly Access, Open AccessAlgorithms, Automatic voltage control, Codes, Current, Decoding, Feedback, Feedback control, Single-photon avalanche diodes, Temperature, Timing

Abstract: Automated and instantaneous stabilizing control of the quantum key decoder is the mandatory procedure, which guarantees real-time and high-speed differential-phase-shift (DPS) quantum key distribution (QKD) at low erroneous rate, and ensures the delay-line interferometric (DLI) decoding of the weak-coherent-pulse quantum bit-stream at a qualified and constant visibility. As the QKD system often suffers from […]

Resource-Efficient Emulation of Majorana Zero Mode Braiding on a Superconducting Trijunction

July 1, 2026Rahul Singh, Weixin Lu, Kaelyn Ferris, Javad ShabaniEarly Access, Open AccessArm, Circuits, Couplers, Emulation, Evolution (biology), Hardware, Poles and zeros, Protocols, Qubit, Timing

Abstract: Topological superconductivity could host quasiparticles that are key candidates for fault tolerant quantum computation due to their immunity to noise as they obey non-Abelian exchange statistics. For example, in the case of Majorana Zero Modes (MZM), braiding enables two topologically protected quantum gates. While their direct manipulation in solid-state systems remains experimentally challenging, digital […]