Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Error-resilient Reversal of Quantum Chaotic Dynamics Enabled by Scramblons
Yu-Chen Li, Tian-Gang Zhou, Shengyu Zhang +8 more·Jun 24, 2025
The emergence of the arrow of time in quantum many-body systems stems from the inherent tendency of Hamiltonian evolution to scramble quantum information and increase entanglement. While, in principle, one might counteract this temporal directionalit...
Directional search for light dark matter with quantum sensors
Hajime Fukuda, Yuichiro Matsuzaki, Thanaporn Sichanugrist·Jun 24, 2025
The presence of dark matter (DM) stands as one of the most compelling indications of new physics in particle physics. Typically, the detection of wave-like DM involves quantum sensors, such as qubits or cavities. The phase of the sensors is usually d...
Distributed Quantum Inner Product Estimation with Structured Random Circuits
Congcong Zheng, Kun Wang, Xutao Yu +2 more·Jun 24, 2025
Distributed inner product estimation (DIPE) is a fundamental task in quantum information, aiming to estimate the inner product between two unknown quantum states prepared on distributed quantum platforms. Existing rigorous sample complexity analyses ...
Learning quantum tomography from incomplete measurements
Mateusz Krawczyk, Pavel Baláž, Katarzyna Roszak +1 more·Jun 24, 2025
We revisit quantum tomography in an informationally incomplete scenario and propose improved state reconstruction methods using deep neural networks. In the first approach, the trained network predicts an optimal linear or quadratic reconstructor wit...
Gottesman-Knill Limit on One-way Communication Complexity: Tracing the Quantum Advantage down to Magic Resources
Snehasish Roy Chowdhury, Sahil Gopalkrishna Naik, Ananya Chakraborty +5 more·Jun 24, 2025
Quantum systems are known to offer advantages over their classical counterpart in communication complexity protocols, where the aim is to minimize the amount of information exchange between distant parties to compute global functions of their distrib...
ReBoot: Encrypted Training of Deep Neural Networks with CKKS Bootstrapping
Alberto Pirillo, Luca Colombo·Jun 24, 2025
Growing concerns over data privacy underscore the need for deep learning methods capable of processing sensitive information without compromising confidentiality. Among privacy-enhancing technologies, Homomorphic Encryption (HE) stands out by offerin...
Local classical correlations between physical electrons in Hubbard systems
Gabriele Bellomia, Adriano Amaricci, Massimo Capone·Jun 23, 2025
We demonstrate that the local nonfreeness, an unbiased measure of correlation between electrons at a single lattice site, can be computed as the mutual information between local natural spin orbitals. This leads us to prove a general result: local el...
Classical and Quantum Resources in Perfect Teleportation
Zhu Dian, Fulin Zhang, Jingling Chen·Jun 23, 2025
We propose a teleportation protocol that enables perfect transmission of a qubit using a partially entangled two-qutrit quantum channel. Within our scheme, we analyze the relationship among the three key ingredients of teleportation: (i) the quantum ...
Reducing complexity of shadow process tomography with generalized measurements
Haigang Wang, Kan He·Jun 23, 2025
Quantum process tomography (QPT) is crucial for advancing quantum technologies, including quantum computers, quantum networks and quantum sensors. Shadow process tomography (SPT) utilizes the Choi isomorphism to map QPT to shadow state tomography (SS...
Entanglement growth and information capacity in a quasiperiodic system with a single-particle mobility edge
Yuqi Qing, Yu-Qin Chen, Shi-Xin Zhang·Jun 22, 2025
We investigate the quantum dynamics of a one-dimensional quasiperiodic system featuring a single-particle mobility edge (SPME), described by the generalized Aubry-André (GAA) model. This model offers a unique platform to study the consequences of coe...
Quantum Magic in Discrete-Time Quantum Walk
Vikash Mittal, Yi-Ping Huang·Jun 21, 2025
Quantum magic, which accounts for the non-stabilizer content of a state, is essential for universal quantum computation beyond classically simulable resources. We investigate the generation and evolution of quantum magic in discrete-time quantum walk...
Fidelity Relations in an Array of Neutral Atom Qubits -- Experimental Validation of Control Noise
Deon Janse van Rensburg, Robert de Keijzer, Rogier Venderbosch +5 more·Jun 20, 2025
Noise is a hindering factor for current-era quantum computers. In this study, we experimentally validate the theoretical relationships between amplitude noise of the control signal and qubit state fidelity. The experiment comprises a 10x10 site optic...
Qubit thermodynamics: Entropy production from nonadiabatic driving
P. Zhelnin, Lucas Johns, C. Argüelles·Jun 20, 2025
Adiabaticity is a cornerstone of many promising approaches to quantum control, computing, and simulation. In practice, however, there is always a trade-off. Although the deleterious effects of noise can be diminished by running a control schedule mor...
Operator-space fragmentation and integrability in Pauli-Lindblad models
Dawid Paszko, Christopher J. Turner, Dominic C. Rose +1 more·Jun 20, 2025
The Lindblad equation for open quantum systems is central to our understanding of coherence and entanglement in the presence of Markovian dissipation. In closed quantum systems Hilbert-space fragmentation is an effective mechanism for slowing decoher...
Protocol for detecting the nonlocality of the multi-Majorana Systems
Bai Liu, Peng Qian, Zhan-qiang Cao +1 more·Jun 20, 2025
Majorana zero modes (MZMs) are non-Abelian quasiparticles with the potential to serve as topological qubits for fault-tolerant quantum computing due to their ability to encode quantum information nonlocally. In multi-Majorana systems configured into ...
Revealing Quantum Information Encoded in Classical Images
Otmane Ainelkitane, Brian Recktenwall-Calvet, Aasma Iqbal +1 more·Jun 20, 2025
In this study, we investigate a simple quantum pre-processing filter kernel designed with only two CNOT gates for image feature extraction. We examine the impact of these filters when combined with a classical neural network for image classification ...
Radiation-Induced Fault Detection in Superconducting Quantum Devices
Marzio Vallero, Gioele Casagranda, Flavio Vella +1 more·Jun 20, 2025
The quest for universal superconducting quantum computing is hindered by noise and errors. It has been proven that Quantum Error Correction (QEC) codes will lay at the foundation of fault tolerant quantum computing. However, cosmic-ray induced correl...
QISCIT: A validated concept inventory assessment for quantum information science
Kelley Durkin, Manshuo Lin, Michael H. Kolodrubetz +1 more·Jun 20, 2025
Quantum information science (QIS) is a critical interdisciplinary field that requires a well-educated workforce in the near future. Numerous researchers and educators have been actively investigating how to best educate and prepare such a workforce. ...
Feedback-driven recurrent quantum neural network universality
Lukas Gonon, Rodrigo Martínez-Peña, Juan-Pablo Ortega·Jun 19, 2025
Quantum reservoir computing uses the dynamics of quantum systems to process temporal data, making it particularly well-suited for machine learning with noisy intermediate-scale quantum devices. Recent developments have introduced feedback-based quant...
Quantum Catalytic Space
H. Buhrman, Marten Folkertsma, Ian Mertz +4 more·Jun 19, 2025
Space complexity is a key field of study in theoretical computer science. In the quantum setting there are clear motivations to understand the power of space-restricted computation, as qubits are an especially precious and limited resource. Recently,...