IEEE Transactions on Quantum Engineering -

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, […]

Entanglement Distribution and Teleportation in Assisted and Scalable Quantum Access Networks

August 11, 2026Amir Mohammad Yaghoobianzadeh, Jawad A. SalehiEarly Access, Open AccessDetectors, Joining processes, Matrices, Modeling, Passive optical networks, Probability, Protocols, Reviews, Teleportation, Textile fibers

Abstract: We have investigated the entanglement distribution and quantum teleportation in quantum passive optical networks (QPONs), where an entangled state is distributed between the central node and multiple end users through lossy fibers and passive optical splitter/combiner. The entanglement degradation is quantified using logarithmic negativity, and teleportation fidelity both in non-assisted and assisted strategies. We […]

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 […]

Clifford Manipulations of Stabilizer States – Application to Linear Optical Qubits

August 6, 2026Ashlesha Patil, Saikat GuhaEarly Access, Open AccessCircuits, Detectors, Encoding, Hilbert space, Measurement, Polarization, Probability, Quantum circuit, Qubit, Rails

Abstract: The single-photon dual-rail qubit is popular for photonic quantum computing and communications, both due to gates being realizable with linear optics (LO) and photon detection, as well as easy interfaces with matter quantum memories. Two-qubit operations, i.e., two-qubit gates followed by the measurement of one (Type-I fusion) or both (Type-II fusion) qubits, are, however, […]

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) […]

Quantum Communication Infrastructure Cost Optimization Using a Genetic Algorithm

July 15, 2026Ange Joel Nounga Njanda, Edmar Egidio Souza, Raul C. Almeida, Anderson A. Tomkelski, Karcius D. R. AssisEarly Access, Open AccessAlgorithms, Costing, Costs, Joining processes, Modeling, Optimization, Planning, Radio access networks, Regional area networks, Topology

Abstract: This paper proposes an optimization model for the design of quantum communication infrastructures (QCI) with the aim of minimizing capital expenditure (CAPEX), focusing on the costs associated with the deployment of quantum links and trusted repeater nodes (TRNs). The model is formulated using an integer linear programming (ILP) program that incorporates physical and operational […]

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 […]

Topological Quantum Compilation Using Mixed-Integer Programming

July 7, 2026Pavel Rytíř, Phillip C. Burke, Christos Aravanis, Jiří Vala, Jakub MarečekEarly Access, Open AccessDistance measurement, Educational institutions, Encoding, Integer programming, Matrices, Optimization, Quantum computing, Qubit, Sequences, Sequential analysis

Abstract: Quantum computation offers the potential to solve certain problems with substantial speed advantages over classical computing, but its practical realization is hindered by significant challenges associated with error propagation and decoherence. Topological quantum computing addresses these issues by encoding qubits in particular two-dimensional topological condensed matter systems, effectively described by topological quantum field theories, […]