Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Towards Sample Efficient Entanglement Classification for 3 and 4 Qubit Systems: A Tailored CNN-BiLSTM Approach
Qian Sun, Yuedong Sun, Yu Hu +3 more·Jan 30, 2026
Accurate classification of multipartite entanglement in high-dimensional quantum systems is crucial for advancing quantum communication and information processing. However, conventional methods are resource-intensive, and even many machine-learning-b...
Quantum-Enhanced Sensing Enabled by Scrambling-Induced Genuine Multipartite Entanglement
Guantian Hu, Wenxuan Zhang, Zhihua Chen +16 more·Jan 30, 2026
Quantum sensing leverages quantum resources to surpass the standard quantum limit, yet many existing protocols rely on the preparation of complex entangled states and Hamiltonian engineering, posing challenges for universality and scalability. Here, ...
Dicke States for Accelerated Two Two-Level Atoms
Muzzamal I. Shaukat, Charles A. Wallace, Anatoly A. Svidzinsky +1 more·Jan 30, 2026
We explore the formation of Dicke states. A system consisting of two two-level atoms located in the right Rindler wedge, has investigated to determine the conditions under which the superradiant or subradiant state can be formed. The dynamics of N tw...
Non-Equilibrium Quantum Many-Body Physics with Quantum Circuits
Bruno Bertini·Jan 29, 2026
These are the notes for the 4.5-hour course with the same title that I delivered in August 2025 at the Les Houches summer school ``Exact Solvability and Quantum Information''. In these notes I pedagogically introduce the setting of brickwork quantum ...
Local-oscillator-agnostic squeezing detection
Suchitra Krishnaswamy, Dhrithi Maria, Laura Ares +3 more·Jan 29, 2026
We address the problem of measuring nonclassicality in continuous-variable bosonic systems without having access to a known reference signal. To this end, we construct broader classes of criteria for nonclassicality which allow us to investigate quan...
Accelerating De Novo Genome Assembly via Quantum-Assisted Graph Optimization with Bitstring Recovery
Jaya Vasavi Pamidimukkala, Himanshu Sahu, Ashwini Kannan +3 more·Jan 29, 2026
Genome sequencing is essential to decode genetic information, identify organisms, understand diseases and advance personalized medicine. A critical step in any genome sequencing technique is genome assembly. However, de novo genome assembly, which in...
Machine learning with minimal use of quantum computers: Provable advantages in Learning Under Quantum Privileged Information (LUQPI)
Vasily Bokov, Lisa Kohl, Sebastian Schmitt +1 more·Jan 29, 2026
Quantum machine learning (QML) is often listed as a promising candidate for useful applications of quantum computers, in part due to numerous proofs of possible quantum advantages. A central question is how small a role quantum computers can play whi...
Error-detectable Universal Control for High-Gain Bosonic Quantum Error Correction
Weizhou Cai, Zi-Jie Chen, Ming Li +5 more·Jan 29, 2026
Protecting quantum information through quantum error correction (QEC) is a cornerstone of future fault-tolerant quantum computation. However, current QEC-protected logical qubits have only achieved coherence times about twice those of their best phys...
A geometric criterion for optimal measurements in multiparameter quantum metrology
Jing Yang, Satoya Imai, Luca Pezzè·Jan 29, 2026
Determining when the multiparameter quantum Cramér--Rao bound (QCRB) is saturable with experimentally relevant single-copy measurements is a central open problem in quantum metrology. Here we establish an equivalence between QCRB saturation and the s...
Holographic Entanglement Propagation Through Wormholes
Kazuki Doi, Liang Li, Ung Nguyen +1 more·Jan 29, 2026
We study how energy and quantum entanglement are transferred when two identical CFTs are entangled locally. This is probed by considering a local operator insertion in one of the CFTs. When the CFTs have holographic duals via the AdS/CFT corresponden...
Strassen's support functionals coincide with the quantum functionals
Keiya Sakabe, Mahmut Levent Doğan, Michael Walter·Jan 29, 2026
Strassen's asymptotic spectrum offers a framework for analyzing the complexity of tensors. It has found applications in diverse areas, from computer science to additive combinatorics and quantum information. A long-standing open problem, dating back ...
A general framework for interactions between electron beams and quantum optical systems
Jakob M. Grzesik, Aviv Karnieli, Charles Roques-Carmes +5 more·Jan 29, 2026
We provide a theoretical framework to describe the dynamics of a free-electron beam interacting with quantized bound systems in arbitrary electromagnetic environments. This expands the quantum optics toolbox to incorporate free-electron beams for app...
A Quantum-Memory-Free Quantum Secure Direct Communication Protocol Based on Privacy Amplification of Coded Sequences
Shang-Jen Su, Shi-Yuan Wang, Matthieu R. Bloch·Jan 29, 2026
We develop an information-theoretic analysis of Quantum-Memory-Free (QMF) Quantum Secure Direct Communication (QSDC) under collective attacks as an alternative to the conventional Quantum Key Distribution (QKD) protocol with one-time pads. Our main c...
3D imaging of the biphoton spatiotemporal wave packet
Yang Xue, Ze-Shan He, Hao-Shu Tian +6 more·Jan 29, 2026
Photons are among the most important carriers of quantum information owing to their rich degrees of freedom (DoFs), including various spatiotemporal structures. The ability to characterize these DoFs, as well as the hidden correlations among them, di...
Hidden-Field Coordination Reveals Payoff-Free Quantum Correlation Structure in Decentralized Coordination
Sinan Bugu·Jan 29, 2026
We study decentralized multi-agent coordination where agents must correlate actions against an unobserved field and cannot communicate. To isolate correlation geometry from payoff optimization, we introduce the Hidden-Field Coordination (HFC) model, ...
Continuum mechanics of entanglement in noisy interacting fermion chains
Tobias Swann, Adam Nahum·Jan 29, 2026
We develop an effective continuum description for information scrambling in a chain of randomly interacting Majorana fermions. The approach is based on the semiclassical treatment of the path integral for an effective spin chain that describes "two-r...
A levitated nano-accelerometer sensitized by quantum quench
M. Kamba, S. Otabe, K. Funo +2 more·Jan 28, 2026
We realize a nanoscale accelerometer exploiting the nonequilibrium dynamics of a nanoparticle near the quantum ground state. We explore the dynamics after quenching the trapping potential and find that rapid quenching provides an instance at which th...
Universal Topological Gates from Braiding and Fusing Anyons on Quantum Hardware
Chiu Fan Bowen Lo, Anasuya Lyons, Dan Gresh +8 more·Jan 28, 2026
Topological quantum computation encodes quantum information in the internal fusion space of non-Abelian anyonic quasiparticles, whose braiding implements logical gates. This goes beyond Abelian topological order (TO) such as the toric code, as its an...
Quantum metrology enhanced by effective time reversal
Yu-Xin Wang, Flavio Salvati, David R. M. Arvidsson-Shukur +3 more·Jan 28, 2026
Quantum metrology involves the application of quantum resources to enhance measurements. Several communities have developed quantum-metrology strategies that leverage effective time reversals. These strategies, we posit, form four classes. First, ech...
The quantum sky of Majorana stars
L. L. Sanchez-Soto, A. B. Klimov, A. Z. Goldberg +1 more·Jan 28, 2026
Majorana stars, the $2S$ spin coherent states that are orthogonal to a spin-$S$ state, offer an elegant method to visualize quantum states. This representation offers deep insights into the structure, symmetries, and entanglement properties of quantu...