Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Unitary Gate Synthesis via Polynomial Optimization
Llorenç Balada Gaggioli, Denys I. Bondar, Jiri Vala +2 more·Aug 2, 2025
Quantum optimal control plays a crucial role in the development of quantum technologies, particularly in the design and implementation of fast and accurate gates for quantum computing. Here, we present a method to synthesize gates using the Magnus ex...
Homology, Hopf Algebras and Quantum Code Surgery
Alexander Cowtan·Aug 2, 2025
This thesis is a study of quantum error-correction codes from an algebraic perspective. We concern ourselves not only with quantum codes but also protocols to perform logical quantum computation using such codes. We derive new methods of performing f...
TensorHyper-VQC: A Tensor-Train-Guided Hypernetwork for Robust and Scalable Variational Quantum Computing
Jun Qi, Chao-Han Huck Yang, Pin-Yu Chen +1 more·Aug 1, 2025
Variational Quantum Computing (VQC) faces fundamental scalability barriers, primarily due to barren plateaus and sensitivity to quantum noise. To address these challenges, we introduce TensorHyper-VQC, a novel tensor-train (TT)-guided hypernetwork fr...
Beyond asymptotic reasoning: the practicalities of a quantum ground state projector based on the wall-Chebyshev expansion
Maria-Andreea Filip, Nathan Fitzpatrick·Aug 1, 2025
We consider a quantum algorithm for ground-state preparation based on a Chebyshev series approximation to the wall function. In a classical setting, this approach is appealing as it guarantees rapid convergence. We analyze the asymptotic scaling and ...
The Bose-Hubbard polaron from weak to strong coupling
Tom Hartweg, Tanul Gupta, Guido Pupillo·Aug 1, 2025
We investigate the zero-temperature properties of a mobile impurity immersed in a bath of bosonic particles confined to a square lattice. We analyze the regimes of attractive and repulsive coupling between the impurity and the bath particles for diff...
Inference of maximum parsimony phylogenetic trees with model-based classical and quantum methods
Jiawei Zhang, Yibo Chen, Yang Zhou +1 more·Aug 1, 2025
The maximum parsimony phylogenetic tree reconstruction problem is NP-hard, presenting a computational bottleneck for classical computing and motivating the exploration of emerging paradigms like quantum computing. To this end, we design three optimiz...
Replacement-Type Quantum Gates
Florian Ginzel, Javad Kazemi, Valentin Torggler +1 more·Aug 1, 2025
We introduce the paradigm of replacement-type quantum gates. This type of gate introduces input qubits, candidate qubits, and output qubits. The candidate qubits are prepared such, that a displacement conditional on the input qubit results in the tar...
Quantum entanglement of Hawking-Partner modes in expanding cavities
José Manuel Montes-Armenteros, Javier Olmedo·Aug 1, 2025
This article investigates quantum entanglement generated within a one-dimensional cavity where one boundary undergoes prescribed acceleration, a setup designed to mimic aspects of Hawking radiation. We quantify quantum correlations using logarithmic ...
Enhancement of non-Markovianity due to environment-induced indirect interaction
Asif Zaman, Muhammad Faryad, Adam Zaman Chaudhry·Aug 1, 2025
Non-Markovian effects are often significant when the system-environment coupling is not weak. Indeed, we find that the non-Markovianity is negligible for a single two-level system undergoing pure dephasing via a weak interaction with a harmonic-oscil...
Entangling Power and Its Deviation: A Quantitative Analysis on Input-State Dependence and Variability in Entanglement Generation
Kyoungho Cho, Jeongho Bang·Aug 1, 2025
Quantifying the entangling capability of quantum operations is a fundamental task in quantum information science. Traditionally, this capability is measured by the entangling power (EP), defined as the average entanglement generated when a quantum op...
Telecommunications fiber-optic and free-space quantum local area networks at the Air Force Research Laboratory
Erin C. Sheridan, Nicholas J Barton, Richard J. Birrittella +29 more·Aug 1, 2025
As quantum computing, sensing, timing, and networking technologies mature, quantum network testbeds are being deployed across the United States and around the world. To support the Air Force Research Laboratory (AFRL)'s mission of building heterogene...
QPP-RNG: A conceptual quantum system for true randomness.
Yurang R. Kuang·Aug 1, 2025
We propose and experimentally demonstrate the quasi-superposition quantum-inspired system (QSQS)-a conceptual quantum system for randomness generation built on measuring two conjugate observables of a permutation sorting process: the deterministic pe...
Q-Sylvan: A Parallel Decision Diagram Package for Quantum Computing
Sebastiaan Brand, A. Laarman·Aug 1, 2025
As physical realizations of quantum computers move closer towards practical applications, the need for tools to analyze and verify quantum algorithms grows. Among the algorithms and data structures used to tackle such problems, decision diagrams (DDs...
Quantum annealing in SK model employing Suzuki–Kubo–deGennes quantum Ising mean field dynamics
Soumyaditya Das, Soumyajyoti Biswas, B. Chakrabarti·Aug 1, 2025
We study a quantum annealing approach for estimating the ground state energy of the Sherrington–Kirpatrick mean field spin glass model using the Suzuki–Kubo–deGennes dynamics applied for individual local magnetization components. The solutions of the...
Cryptanalysis of Isogeny-Based Quantum Money with Rational Points
Hyeonhak Kim, Donghoe Heo, Seokhie Hong·Aug 1, 2025
Quantum money is the cryptographic application of the quantum no-cloning theorem. It has recently been instantiated by Montgomery and Sharif (Asiacrypt'24) from class group actions on elliptic curves. In this work, we propose a concrete cryptanalysis...
Towards Efficient Verification of Computation in Quantum Devices
Keren Li, Peng Yan, Hanru Jiang +1 more·Aug 1, 2025
Designing quantum processors is a complex task that demands advanced verification methods to ensure their correct functionality. However, traditional methods of comprehensively verifying quantum devices, such as quantum process tomography, face signi...
Magic States in the Asymmetric Quantum Rabi Model
A. Campos-Uscanga, E. Rodr'iguez, E. Mart'inez +1 more·Aug 1, 2025
Magic or non-stabilizerness is a resource for quantum computing that has been extensively studied in qudit networks. It describes the degree to which Clifford gates cannot generate a given state, capturing the advantage of quantum over classical comp...
Emergent Bifurcations in Quantum Circuit Stability from Hidden Parameter Statistics
Pilsung Kang·Aug 1, 2025
The compression of quantum circuits is a foundational challenge for near-term quantum computing, yet the principles governing circuit stability remain poorly understood. We investigate this problem through a large-scale numerical analysis of 300 stru...
Computation of Operator Exponentials Using the Dunford–Cauchy Integral
A. Tsirulev·Aug 1, 2025
We consider an \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$n$$\e...
Quantum repeaters based on stationary and flying Gottesman-Kitaev-Preskill qudits
Stefan Haussler, P. Loock·Aug 1, 2025
There are various approaches to long-range quantum communication based on conceptually different forms of quantum repeaters. Here we explore a quantum repeater scheme that employs quantum error correction (QEC) both on the flying (light) qubits and o...