Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Noise modelling of waveguide based squeezed light sources
Erik Anders Torsten Svanberg, Daniel Voigt, Vaishali Adya·Mar 27, 2026
Squeezed states of light are used for precision metrology and quantum-enhanced measurements, with applications spanning communication and sensing. State-of-the-art squeezed-light sources typically rely on optical cavities to achieve high, usable leve...
ParaQAOA: Efficient Parallel Divide-and-Conquer QAOA for Large-Scale Max-Cut Problems Beyond 10,000 Vertices
Po-Hsuan Huang, Xie-Ru Li, Chi Chuang +2 more·Mar 27, 2026
Quantum Approximate Optimization Algorithm (QAOA) has emerged as a promising solution for combinatorial optimization problems using a hybrid quantum-classical framework. Among combinatorial optimization problems, the Maximum Cut (Max-Cut) problem is ...
Lieb-Robinson bounds for Bose-Hubbard Hamiltonians: A review with a simplified proof
Marius Lemm, Carla Rubiliani·Mar 27, 2026
We review recent progress on state-dependent Lieb-Robinson bounds for Bose-Hubbard Hamiltonians. In particular, Kuwahara, Vu, and Saito established that, for general bounded-density initial states, the Lieb-Robinson velocity is bounded by $t^{d-1}$ f...
Multifractal Analysis of the Non-Hermitian Skin Effect: From Many-Body to Tree Models
Shu Hamanaka·Mar 27, 2026
The non-Hermitian skin effect is an anomalous localization phenomenon induced by nonreciprocal dissipation and has attracted considerable attention in recent years both theoretically and experimentally. In this article, we review the multifractal asp...
Distributed Quantum Discrete Logarithm Algorithm
Renjie Xu, Daowen Qiu, Ligang Xiao +2 more·Mar 27, 2026
Solving the discrete logarithm problem (DLP) with quantum computers is a fundamental task with important implications. Beyond Shor's algorithm, many researchers have proposed alternative solutions in recent years. However, due to current hardware lim...
Geometric Phase Effect in Thermodynamic Properties and in the Imaginary-Time Multi-Electronic-State Path Integral Formulation
Yu Zhai, Youhao Shang, Jian Liu·Mar 27, 2026
The geometric phase (GP) is a fundamental quantum effect arising from conical intersections (CIs), with profound consequences for vibronic energy levels. Standard imaginary-time path integral molecular dynamics (PIMD) based on the Born-Oppenheimer ap...
Probing Unruh Effect from Enhanced Decoherence
Ran Li, Zhong-Xiao Man, Jin Wang·Mar 27, 2026
We investigate the decoherence of an Unruh-DeWitt detector coupled to scalar, electromagnetic, and spinor fields in four-dimensional Minkowski spacetime. By employing the Schwinger-Keldysh influence functional formalism, we derive a universal scaling...
Enhanced quantum violation of a non-contextual inequality and witnessing quantum dimension
Ritwija Roy, Anindya Biswas·Mar 27, 2026
We consider a non-contextual inequality in the sequential measurement scenario and derive the optimal quantum violation of it without assuming the dimension of the system. Since the measurement is dichotomic and the dimension of the quantum system is...
Cosmological Correlators Using Tensor Networks
Ujjwal Basumatary, Aninda Sinha, Xinan Zhou·Mar 27, 2026
We develop a nonperturbative tensor-network framework for computing cosmological correlators in de Sitter space and use it to test the proposal that suitably defined in-in correlators can be obtained from an in-out formalism by gluing the expanding a...
Minimal noise in non-quantized gravity
Giuseppe Fabiano, Tomohiro Fujita, Akira Matsumura +1 more·Mar 27, 2026
An elementary prediction of the quantization of the gravitational field is that the Newtonian interaction can entangle pairs of massive objects. Conversely, in models of gravity in which the field is not quantized, the gravitational interaction neces...
MoSAIC: Scalable Probabilistic Error Cancellation via Variational Blockwise Noise Aggregation
Maya Ma, Rimika Jaiswal, Murphy Yuezhen Niu·Mar 27, 2026
Quantum error mitigation is essential for extracting trustworthy results from noisy intermediate-scale quantum (NISQ) processors. Yet, current approaches face a core scalability bottleneck: unbiased methods such as probabilistic error cancellation (P...
Achieving double-logarithmic precision dependence in optimization-based quantum unstructured search
Zhijian Lai, Dong An, Jiang Hu +1 more·Mar 27, 2026
Grover's algorithm is a fundamental quantum algorithm that achieves a quadratic speedup for unstructured search problems of size $N$. Recent studies have reformulated this task as a maximization problem on the unitary manifold and solved it via linea...
Non-Relativistic Quantum Mechanics in Multidimensional Geometric Frameworks
Dalaver H. Anjum, Shahid Nawaz, Muhammad Saleem·Mar 27, 2026
A generalized formulation of non-relativistic quantum mechanics is developed within multidimensional geometric (NG) frameworks characterized by a power-law dispersion relation \(E \propto |p|^{j}\), where \(j = N - 1\). Starting from the generalized ...
Hardware-Aware Tensor Networks for Real-Time Quantum-Inspired Anomaly Detection at Particle Colliders
Sagar Addepalli, Prajita Bhattarai, Abhilasha Dave +1 more·Mar 27, 2026
Quantum machine learning offers the ability to capture complex correlations in high-dimensional feature spaces, crucial for the challenge of detecting beyond the Standard Model physics in collider events, along with the potential for unprecedented co...
Scalable topological quantum computing based on Sine-Cosine chain models
A. Lykholat, G. F. Moreira, I. R. Martins +3 more·Mar 26, 2026
This work proposes a scalable framework for topological quantum computing using Matryoshka-type Sine-Cosine chains. These chains support high-dimensional qudit encoding within single systems, reducing the physical resource overhead compared to conven...
Approximate Error Correction for Quantum Simulations of SU(2) Lattice Gauge Theories
Zachary P. Bradshaw·Mar 26, 2026
We present a protocol for actively suppressing Gauss law violations in quantum simulations of SU(2) lattice gauge theory. The protocol uses mid-circuit measurements to extract a characterization of the gauge-violation sector at each lattice vertex, r...
Impact of Topology on Multipartite Entanglement Distribution Protocols in Quantum Networks
Jazz E. Z. Ooi, Evan Sutcliffe, Alejandra Beghelli·Mar 26, 2026
Quantum networks will rely on entanglement distribution to enable multi-user applications such as distributed quantum computing and cryptography. While multipartite entanglement distribution routing protocols have been extensively studied on idealise...
Extreme (Rogue) Waves: From Theory to Experiments in Ultracold Gases and Beyond
A. Chabchoub, P. Engels, P. G. Kevrekidis +4 more·Mar 26, 2026
In this Chapter, we review key theoretical and experimental advances in the study of extreme nonlinear wave events, called rogue waves (RWs), in both single-component attractively interacting and two-component repulsive mixtures of ultracold quantum ...
Generalizable Verilog Modeling Framework for Synchronous and Asynchronous Superconducting Pulse-Based Logic Gates
Elisabeth Feng, Robert S. Aviles, Peter A. Beerel·Mar 26, 2026
Superconducting Single Flux Quantum (SFQ) logic offers a promising platform for ultra-low-power, high-frequency computing. However, their pulse-based nature poses challenges for scalable modeling, design, and verification using conventional hardware ...
Two-Gate Extensions of Free Axis and Free Quaternion Selection for Sequential Optimization of Parameterized Quantum Circuits
Joona V. Pankkonen·Mar 26, 2026
We propose two-gate extensions of the sequential single-qubit optimizers, Free Axis Selection (Fraxis) and Free Quaternion Selection (FQS), termed Two-Gate Fraxis (TGF) and Two-Gate FQS (TGFQS), respectively. In contrast to Fraxis and FQS, which upda...