Photonics Archives - IEEE Transactions on Quantum Engineering

Impact of High-Brightness Entangled Photon Pairs on CHSH Inequality Experiment

March 30, 2026Jin-Woo Kim, Heonoh Kim, June Koo Kevin RheeOpen AccessAttenuation, Brightness, Correlation, Detectors, Mathematical models, Photonics, Quantum entanglement, Quantum mechanics, Satellites, Standards

Abstract: Verifying the violation of Bell’s inequality is one of the most representative methods to demonstrate that entangled photon pairs prepared in a quantum optics-based system exhibit quantum properties. While experiments on Bell inequality violations have been theoretically well-established and extensively conducted to implement various quantum information technologies in laboratory settings, mathematical modeling for systematically […]

Realistic Quantum Network Simulation for Experimental BBM92 Key Distribution

February 9, 2026Michelle Chalupnik, Brian Doolittle, Suparna Seshadri, Eric G. Brown, Keith Kenemer, Daniel Winton, Daniel Sanchez-Rosales, Matthew Skrzypczyk, Cara Alexander, Eric Ostby, Michael CubedduQuantum InternetDetectors, Discrete event simulation, Encryption, Measurement by laser beam, Optical fiber networks, Photonics, Protocols, Quantum entanglement, Quantum networks, Qubit

Abstract: Quantum key distribution (QKD) can provide secure key material between two parties without relying on assumptions about the computational power of an eavesdropper. QKD is performed over quantum links and quantum networks, systems which are resource-intensive to deploy and maintain. To evaluate and optimize performance prior to, during, and after deployment, accurate simulations with […]

Quantum Rotation Diversity in Displaced Squeezed Binary Phase-Shift Keying

January 29, 2026Ioannis KrikidisQuantum InternetBinary phase shift keying, Fading channels, Noise, Optical fiber communication, Optical fibers, Optical receivers, Optical transmitters, Photonics, Symbols, Wireless communication

Abstract: We propose a quantum rotation diversity (QRD) scheme for optical quantum communication using binary phase-shift-keying displaced squeezed states and homodyne detection over Gamma–Gamma turbulence channels. Consecutive temporal modes are coupled by a passive orthogonal rotation that redistributes the displacement amplitude between slots, yielding a diversity order of two under independent fading and joint maximum-likelihood […]

Bridging All-Photonic and Memory-Based Quantum Repeaters

January 12, 2026Naphan Benchasattabuse, Michal Hajdušek, Rodney Van MeterQuantum InternetArchitecture, Logic gates, Memory management, Photonics, Protocols, Quantum entanglement, Quantum repeaters, Quantum state, Qubit, Repeaters

Abstract: The all-photonic quantum repeater scheme based on repeater graph states (RGSs) offers a promising approach for constructing quantum networks without relying on long-coherence-time quantum memories, which remain a significant technological challenge. Despite substantial progress in defining new schemes for generating RGSs, and in analyzing their performance for the task of secret key generation, the […]

A Sparse-Event Simulation Engine to Model Coincidence-Based Ranging Architectures in Quantum Lidar

December 31, 2025Marco Passafiume Raviraj Adve Boniface Yogendran Bhashyam BalajiQuantum EngineeringBackscatter, Correlation, Engines, Jitter, Laser radar, Noise, Optical waveguides, Photonics, Quantum entanglement, Quantum radar

Abstract: Nonclassical radar and lidar systems have received substantial interest recently; however, although many experimental demonstrations have provided deep physical knowledge of such systems, there remains a lack of effective system models to obtain fundamental metrics such as range resolution as a function of system parameters. This work introduces a high-fidelity simulation platform to mimic […]

On-Demand Resource Allocation for a Quantum Network Hub

December 9, 2025Scarlett Gauthier, Thirupathaiah Vasantam, Gayane VardoyanQuantum InternetCalibration, Hardware, Numerical models, Optical switches, Photonics, Quantum entanglement, Quantum networks, Qubit, Resource management, Telephone sets

Abstract: To effectively support the execution of quantum network applications for multiple sets of user-controlled quantum nodes, a quantum network must efficiently allocate shared resources. We study traffic models for a type of quantum network hub called an entanglement generation switch (EGS), a device that allocates resources to enable entanglement generation between nodes in response […]

Transmon Qubit Modeling and Characterization for Dark Matter Search

November 14, 2025Roberto Moretti, Danilo Labranca, Pietro Campana, Rodolfo Carobene, Marco Gobbo, Manuel A. Castellanos-Beltran, David Olaya, Peter F. Hopkins, Leonardo Banchi, Matteo Borghesi, Alessandro Candido, Stefano Carrazza, Hervè Atsè Corti, Alessandro D Elia, Marco Faverzani, Elena Ferri, Angelo Nucciotti, Luca Origo, Andrea Pasquale, Alex Stephane Piedjou Komnang, Alessio Rettaroli, Simone Tocci, Claudio Gatti, Andrea GiacheroQuantum Sensing & MetrologyCapacitance, Coherence time, Couplings, Dark matter, Magnetic fields, Photonics, Physics, Qubit, Resonant frequency, Transmission line measurements

Abstract: This study presents the design, simulation, and experimental characterization of a superconducting transmon qubit circuit prototype for potential applications in dark matter detection experiments. We describe a planar circuit design featuring two noninteracting transmon qubits, one with fixed frequency and the other flux tunable. Finite-element simulations were employed to extract key Hamiltonian parameters and […]

Quantum Direct-Sequence Spread-Spectrum CDMA Communication Systems: Mathematical Foundations

April 15, 2025Mohammad Amir Dastgheib; Jawad A. Salehi; Mohammad RezaiQuantum InternetCommunication systems, Electro-optic modulators, Encoding, Interference, Modulation, Multiaccess communication, Photonics, Quantum communication, Quantum entanglement, Quantum mechanics

Abstract: This article describes the fundamental principles and mathematical foundations of quantum direct-sequence spread-spectrum code division multiple-access communication systems. The evolution of quantum signals through the quantum direct-sequence spread-spectrum multiple-access communication system is carefully characterized by a novel approach called the decomposition of creation operators. In this methodology, the creation operator of the transmitted quantum […]

Quantum Two-Way Protocol Beyond Superdense Coding: Joint Transfer of Data and Entanglement

January 10, 2025Kristian S. Jensen, Lorenzo Valentini, René B. Christensen, Marco Chiani, Petar PopovskiQuantum InternetEncoding, Metadata, Photonics, Proposals, Protocols, Quantum channels, Quantum entanglement, Qubit, Repeaters, Throughput

In this article, we introduce a generalization of one-way superdense coding to two-way communication protocols for transmitting classical bits by using entangled quantum pairs. The proposed protocol jointly addresses the provision of entangled pairs and superdense coding, introducing an integrated approach for managing entanglement within the communication protocol. To assess the performance of the proposed […]

Fault-Tolerant One-Way Noiseless Amplification for Microwave Bosonic Quantum Information Processing

August 7, 2024Hany Khalifa, Riku Jäntti, Gheorghe Sorin ParaoanuQuantum InternetComputational modeling, Logic gates, Microwave amplifiers, Photonics, Propagation losses, Quantum entanglement, Qubit

Microwave quantum information networks require reliable transmission of single-photon propagating modes over lossy channels. In this article, we propose a microwave noiseless linear amplifier (NLA) suitable to circumvent the losses incurred by a flying photon undergoing an amplitude damping channel (ADC). The proposed model is constructed by engineering a simple 1-D four-node cluster state. Contrary […]