Quantum Information Archives - IEEE Transactions on Quantum Engineering

Quantum-Assisted Optimization and Security for Trustworthy AI-Driven Healthcare

March 25, 2026Hafiz Muhammad Waseem, Gregory Epiphaniou, Carsten MapleOpen Access, Quantum InformationAccuracy, Artificial intelligence, Complexity theory, Decision making, Electronic healthcare, Genomics, Medical services, Optimization, Scalability, Security

Abstract: Digital health increasingly relies on artificial intelligence for clinical decision-making, patient management, and distributed learning, yet two persistent challenges remain: the computational complexity of optimization tasks, such as operating-room scheduling and genomic feature selection, and the need for robust security in federated and Internet-of-Medical-Things (IoMT) systems that are vulnerable to poisoning and spoofing attacks. […]

Encoder Circuit Optimization for Nonbinary Quantum Error Correction Codes in Prime Dimensions: An Algorithmic Framework

March 2, 2026Aditya Sodhani, Keshab K. ParhiQuantum InformationCodes, Encoding, Galois fields, Hardware, Hilbert space, Logic gates, Quantum system, Qubit, Urban areas, Vectors

Abstract: Quantum computers are a revolutionary class of computational platforms with applications in combinatorial and global optimization, machine learning, and other domains involving computationally hard problems. While these machines typically operate on qubits—quantum information elements that can occupy superpositions of the basis |0⟩ and |1⟩ states—recent advances have demonstrated the practical implementation of higher dimensional […]

Differential Phase Encoded Plug-and-Play Measurement-Device-Independent Quantum Key Distribution

February 16, 2026Nilesh Sharma, Shashank Kumar Ranu, Prabha Mandayam, Anil PrabhakarQuantum InformationDetectors, Encoding, Frequency modulation, Interference, Laser beams, Mirrors, Phase measurement, Protocols, Quantum key distribution, Security

Abstract: Measurement-device-independent quantum key distribution (MDI-QKD) enhances security by removing vulnerabilities associated with detector side channels. Real-world implementations ofMDI-QKD face practical challenges, such as channel asymmetry and physical imperfections, which degrade the visibility of Hong–Ou–Mandel interference, an essential factor in determining the secure key rate. In this work, we evaluate the performance of differential phase […]

Optimal Allocation of Pauli Measurements for Low-Rank Quantum State Tomography

January 16, 2026Zhen Qin, Casey Jameson, Zhexuan Gong, Michael B. Wakin, Zhihui ZhuQuantum InformationAccuracy, Current measurement, Density measurement, Loss measurement, Measurement uncertainty, Noise measurement, Optimization, Quantum state, Sensors, Tomography

Abstract: The process of reconstructing quantum states from experimental measurements, accomplished through quantum state tomography (QST), plays a crucial role in verifying and benchmarking quantum devices. A key challenge of QST is to find out how the accuracy of the reconstruction depends on the number of state copies used in the measurements. When multiple measurement […]

Low-Complexity Syndrome-Based Linear Programming Decoding of Quantum LDPC Codes

December 4, 2025Sana Javed, Sergio Colet, Francisco Garcia-Herrero, Óscar Ruano, Juan Antonio Maestro, Bane Vasić, Mark F. FlanaganQuantum InformationBenchmark testing, Codes, Decoding, Error analysis, Error correction codes, Floors, Iterative decoding, Linear programming, Noise, Qubit

Abstract: This article proposes a novel low-complexity syndrome-based linear programming (SB-LP) decoding algorithm for decoding quantum low-density parity-check codes. Under the code-capacity model, the SB-LP decoder can be used as a standalone decoder; however, it is particularly powerful when used as a postprocessing step following SB min-sum (SB-MS) decoding. In the latter case, the proposed […]

Quantum Detection Over Quantum Channels With Uncertainty

October 24, 2025Jeremy Johnston, Xiaodong WangQuantum InformationMeasurement uncertainty, Noise measurement, Optimization, Probes, Quantum channels, Quantum communication, Quantum state, Quantum system, Uncertainty, Vectors

Abstract: In quantum state discrimination, the design of measurement operators and probe states is typically formulated under the assumption that the set of possible states is perfectly known, but this may yield designs that are sensitive to deviations in the realized set of states. For example, the channel through which a transmitted state is sent […]

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, […]

Unital Qubit Queue-Channels: Classical Capacity and Product Decoding

June 21, 2025Vikesh Siddhu, Avhishek Chatterjee, Krishna Jagannanthan, Prabha Mandayam, Sridhar TayurQuantum Information

Abstract: Quantum queue-channels arise naturally in the context of buffering in quantum networks, wherein the noise suffered by the quantum states depends on the time spent waiting in the buffer. Mandayam (2020) derived a simple upper bound on the classical capacity of an additive queue-channel and showed it to be achievable for the erasure and […]

Three-Party Controlled Authentication Semiquantum Key Agreement Protocol for Online Joint Consultation

May 12, 2025XiYuan Liang; YeFeng He; YiChi Zhang; JiaQiang FanQuantum Information, UncategorizedAuthorizing identity, cluster states, quantum cryptography, qubit efficiency, semiquantum key agreement (SQKA)

Abstract: In Wise Information Technology of Medicine, to ensure both confidentiality and integrity of the data created during online joint consultations, and to solve the problem that ordinary users cannot afford expensive quantum devices and are vulnerable to man-in-the-middle attacks during communication, this article proposes a three-party controlled authentication semiquantum key agreement protocol, leveraging the […]