Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Finite-Size Effects in Quantum Metrology at Strong Coupling: Microscopic vs Phenomenological Approaches
Ali Pedram, Özgür E. Müstecaplıoğlu·Jul 26, 2025
We study the ultimate precision limits of a spin chain, strongly coupled to a heat bath, for measuring a general parameter and report the results for specific cases of magnetometry and thermometry. Employing a full polaron transform, we derive the ef...
An Efficient Alternating Minimization Algorithm for Computing Quantum Rate-Distortion Function
Lingyi Chen, Deheng Yuan, Wen-Ying Zhang +2 more·Jul 26, 2025
We consider the computation of the entanglement-assisted quantum rate-distortion function, which plays a central role in quantum information theory. We propose an efficient alternating minimization algorithm based on the Lagrangian analysis. Instead ...
Quantum-Efficient Convolution through Sparse Matrix Encoding and Low-Depth Inner Product Circuits
Mohammad Rasoul Roshanshah, Payman Kazemikhah, Hossein Aghababa·Jul 25, 2025
Convolution operations are foundational to classical image processing and modern deep learning architectures, yet their extension into the quantum domain has remained algorithmically and physically costly due to inefficient data encoding and prohibit...
Random approximate quantum information masking
Xiaodi Li, Xinyang Shu, Huangjun Zhu·Jul 25, 2025
Masking information into quantum correlations is a cornerstone of many quantum information applications. While there exist the no-hiding and no-masking theorems, approximate quantum information masking (AQIM) offers a promising means of circumventing...
Graph Neural Network-Based Predictor for Optimal Quantum Hardware Selection
A. Tudisco, Deborah Volpe, Giacomo Orlandi +1 more·Jul 25, 2025
The growing variety of quantum hardware technologies, each with unique peculiarities such as connectivity and native gate sets, creates challenges when selecting the best platform for executing a specific quantum circuit. This selection process usual...
Directional Codes: a new family of quantum LDPC codes on hexagonal- and square-grid connectivity hardware
G. Geh'er, David Byfield, Archibald Ruban·Jul 25, 2025
Utility-scale quantum computing requires quantum error correction (QEC) to protect quantum information against noise. Currently, superconducting hardware is a promising candidate for achieving fault tolerance due to its fast gate times and feasible s...
Secure One-Sided Device-Independent Quantum Key Distribution Under Collective Attacks with Enhanced Robustness
Pritam Roy, Subhankar Bera, A. S. Majumdar·Jul 24, 2025
We study the security of a quantum key distribution (QKD) protocol under the one-sided device-independent (1sDI) setting, which assumes trust in only one party's measurement device. This approach effectively provides a balance between the experimenta...
Average-computation benchmarking for local expectation values in digital quantum devices
Flavio Baccari, Pavel Kos, Georgios Styliaris·Jul 24, 2025
As quantum devices progress towards a quantum advantage regime, they become harder to benchmark. A particularly relevant challenge is to assess the quality of the whole computation, beyond testing the performance of each single operation. Here we int...
NIST Post-Quantum Cryptography Standard Algorithms Based on Quantum Random Number Generators
Abel C. H. Chen·Jul 24, 2025
In recent years, the advancement of quantum computing technology has posed potential security threats to RSA cryptography and elliptic curve cryptography. In response, the National Institute of Standards and Technology (NIST) published several Federa...
Quantum Machine Learning for Predicting Binding Free Energies in Structure-Based Virtual Screening
Pei-Kun Yang·Jul 24, 2025
In structure-based virtual screening, it is often necessary to evaluate the binding free energy of protein-ligand complexes by considering not only molecular conformations but also how these structures shift and rotate in space. The number of possibl...
Programmable exploration of magnetic states in Lieb-kagome interpolated lattices
A. Lopez-Bezanilla, Pavel A. Dub, Avadh Saxena·Jul 24, 2025
We investigate a hybrid modeling framework in which a quantum annealer is used to simulate magnetic interactions in molecular qubit lattices inspired by experimentally realizable systems. Using phthalocyanine assemblies as a structurally constrained ...
Analysis of RF Surface Loss in a Planar 2D Qubit
A. Lunin, M. Bal, A. Murthy +3 more·Jul 24, 2025
The Josephson junction and shunt capacitor form a transmon qubit, which is the cornerstone of modern quantum computing platforms. For reliable quantum computing, it is important how long a qubit can remain in a superposition of quantum states, which ...
Enhanced continuous-variable quantum key distribution protocol via adaptive signal processing
Özlem Erkılıç, Biveen Shajilal, Lorcán O. Conlon +7 more·Jul 24, 2025
Quantum key distribution (QKD) provides secure communication using quantum mechanics, with continuous-variable QKD (CV-QKD) being an attractive solution due to its compatibility with existing telecommunication technology. Its main drawback is suscept...
Shallow quantum circuit for generating extremely low-entangled approximate state designs
Wonjun Lee, Minki Hhan, Gil Young Cho +1 more·Jul 23, 2025
Random quantum states have various applications in quantum information science. We discover a new ensemble of quantum states that serve as an $ε$-approximate state $t$-design while possessing extremely low entanglement, magic, and coherence. These re...
Quantum walks reveal topological flat bands, robust edge states and topological phase transitions in cyclic graphs
Dinesh Kumar Panda, Colin Benjamin·Jul 23, 2025
Topological phases, edge states, and flat bands in synthetic quantum systems are a key resource for topological quantum computing and noise-resilient information processing. We introduce a scheme based on step-dependent quantum walks on cyclic graphs...
Advancing Quantum State Preparation Using Decision Diagram with Local Invertible Maps
Xin Hong, Aochu Dai, Chenjian Li +3 more·Jul 23, 2025
Quantum state preparation (QSP) is a fundamental task in quantum computing and quantum information processing. It is critical to the execution of many quantum algorithms, including those in quantum machine learning. In this paper, we propose a family...
On the query complexity of unitary channel certification
Sangwoo Jeon, Changhun Oh·Jul 23, 2025
Certifying the correct functioning of a unitary channel is a critical step toward reliable quantum information processing. In this work, we investigate the query complexity of the unitary channel certification task: testing whether a given d-dimensio...
Enhancing Quantum Federated Learning with Fisher Information-Based Optimization
A. Bhatia, S. Kais·Jul 23, 2025
Federated Learning (FL) has become increasingly popular across different sectors, offering a way for clients to work together to train a global model without sharing sensitive data. It involves multiple rounds of communication between the global mode...
Tensorial Spin-Phonon Relaxation Reveals Mode-Selective Relaxation Pathways in a Single-Molecule Magnet
Roman Dmitriev, Nosheen Younas, Yu Zhang +2 more·Jul 23, 2025
Understanding and controlling spin relaxation in molecular qubits is essential for developing chemically tunable quantum information platforms. We present a fully first-principles framework for computing the spin relaxation tensor in a single-molecul...
On small perturbations of coherent information
Zhen Wu, Zhihao Ma, James Fullwood·Jul 22, 2025
Quantum capacity quantifies the amount of quantum information that can be transmitted by a quantum channel with an arbitrary small probability of error. Mathematically, the quantum capacity is given by an asymptotic formula involving the one-shot qua...