Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Structural Conditions for Native CCZ Magic-State Fountains in qLDPC Codes
Mohammad Rowshan·Jan 30, 2026
Quantum low-density parity-check (qLDPC) codes promise constant-rate, linear-distance families with bounded-weight checks, and recent work has realized transversal or constant-depth non-Clifford gates on various (often non-LDPC) codes. However, no ex...
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...
On the undecidability of quantum channel capacities
Archishna Bhattacharyya, Arthur Mehta, Yuming Zhao·Jan 30, 2026
An important distinction in our understanding of capacities of classical versus quantum channels is marked by the following question: is there an algorithm which can compute (or even efficiently compute) the capacity? While there is overwhelming evid...
Trojan-Resilient NTT: Protecting Against Control Flow and Timing Faults on Reconfigurable Platforms
Rourab Paul, Krishnendu Guha, Amlan Chakrabarti·Jan 30, 2026
Number Theoretic Transform (NTT) is the most essential component for polynomial multiplications used in lattice-based Post-Quantum Cryptography (PQC) algorithms such as Kyber, Dilithium, NTRU etc. However, side-channel attacks (SCA) and hardware vuln...
Understanding the sign problem from an exact Path Integral Monte Carlo model of interacting harmonic fermions
Siu A. Chin·Jan 30, 2026
This work shows that the recently discovered operator contraction identity for solving the discreet Path Integral of the harmonic oscillator can be applied equally to fermions in any dimension. This then yields an exactly solvable model for studying ...
Assessing the Real-World Impact of Post-Quantum Cryptography on WPA-Enterprise Networks
Lukas Köder, Nils Lohmiller, Phil Schmieder +3 more·Jan 30, 2026
The advent of large-scale quantum computers poses a significant threat to contemporary network security protocols, including Wi-Fi Protected Access (WPA)-Enterprise authentication. To mitigate this threat, the adoption of Post-Quantum Cryptography (P...
Spectral Filtering for Learning Quantum Dynamics
Elad Hazan, Annie Marsden·Jan 29, 2026
Learning high-dimensional quantum systems is a fundamental challenge that notoriously suffers from the curse of dimensionality. We formulate the task of predicting quantum evolution in the linear response regime as a specific instance of learning a C...
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 ...
Manjushri: A Tool for Equivalence Checking of Quantum Circuits
Xuan Du Trinh, Meghana Sistla, Nengkun Yu +1 more·Jan 29, 2026
Verifying whether two quantum circuits are equivalent is a central challenge in the compilation and optimization of quantum programs. We introduce \textsc{Manjushri}, a new automated framework for scalable quantum-circuit equivalence checking. \texts...
Quantum bootstrap product codes
Meng-Yuan Li·Jan 29, 2026
Product constructions constitute a powerful method for generating quantum CSS codes, yielding celebrated examples such as toric codes and asymptotically good low-density parity check (LDPC) codes. Since a CSS code is fully described by a chain comple...
Quantum-Inspired Reinforcement Learning for Secure and Sustainable AIoT-Driven Supply Chain Systems
Muhammad Bilal Akram Dastagir, Omer Tariq, Shahid Mumtaz +2 more·Jan 29, 2026
Modern supply chains must balance high-speed logistics with environmental impact and security constraints, prompting a surge of interest in AI-enabled Internet of Things (AIoT) solutions for global commerce. However, conventional supply chain optimiz...
Quaternionic Perfect Sequences and Hadamard Matrices
Aidan Bennett, Curtis Bright, Paul Colinot +1 more·Jan 29, 2026
A finite sequence of numbers is perfect if it has zero periodic autocorrelation after a nontrivial cyclic shift. In this work, we study quaternionic perfect sequences having a one-to-one correspondence with the binary sequences arising in Williamson'...
Photon-graviton polarization entanglement induced by a classical electromagnetic wave
Alessandro Ferreri·Jan 29, 2026
We study the photon-graviton pair production induced by the propagation of a classical electromagnetic (EM) wave in a Minkowskian spacetime. In our model, the gravitational field is described in terms of the quantized graviton field, whereas the elec...
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...
Efficient learning of logical noise from syndrome data
Han Zheng, Chia-Tung Chu, Senrui Chen +4 more·Jan 29, 2026
Characterizing errors in quantum circuits is essential for device calibration, yet detecting rare error events requires a large number of samples. This challenge is particularly severe in calibrating fault-tolerant, error-corrected circuits, where lo...
Three-dimensional squeezing of optically levitated nanospheres
Giacomo Marocco, David C. Moore, Daniel Carney·Jan 29, 2026
We propose a protocol to measure impulses beyond the standard quantum limit. The protocol reduces noise in all three spatial dimensions and consists of squeezing a mechanical system's state via a series of jumps in the frequency of the harmonic poten...
Block removal for large language models through constrained binary optimization
David Jansen, Roman Rausch, David Montero +1 more·Jan 29, 2026
Compressing resource-intensive large language models by removing whole transformer blocks is a seemingly simple idea, but identifying which blocks to remove constitutes an exponentially difficult combinatorial problem. In this paper, we formulate blo...
Some properties of coherent states with singular complex matrix argument
Dušan Popov·Jan 29, 2026
In the paper our aim was to study the properties of a new version of coherent states whose argument is a linear combination of two special singular square 2 x 2 matrix, having a single nonzero element, equal to 1, and two labeling complex variables a...
Entanglement and discord classification via deep learning
Katherine Muñoz-Mellado, Daniel Uzcátegui-Contreras, Antonio Guerra +2 more·Jan 29, 2026
In this work, we propose a deep learning-based approach for quantum entanglement and discord classification using convolutional autoencoders. We train models to distinguish entangled from separable bipartite states for $d \times d$ systems with local...
The metaplectic semigroup and its applications to time-frequency analysis and evolution operators
Gianluca Giacchi, Luigi Rodino, Davide Tramontana·Jan 29, 2026
We develop a systematic analysis of the metaplectic semigroup $\mathrm{Mp}_+(d,\mathbb{C})$ associated with positive complex symplectic matrices, a notion introduced almost simultaneously and independently by Hörmander, Brunet, Kramer, and Howe, ther...