Papers
Live trends in quantum computing research, updated daily from arXiv.
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The AI risk repository: A meta-review, database, and taxonomy of risks from artificial intelligence
Peter Slattery, Alexander K. Saeri, Emily A. C. Grundy +7 more·Aug 14, 2024
Artificial intelligence (AI) is reshaping society, from video generation to medical diagnosis, coding agents to autonomous vehicles. Yet researchers, policymakers, and technology companies lack shared terminology for discussing AI risks. Consider "pr...
Randomized benchmarking protocol for dynamic circuits
Liran Shirizly, L. Govia, David C. McKay·Aug 14, 2024
Dynamic circuit operations -- measurements with feedforward -- are important components for future quantum computing efforts, but lag behind gates in the availability of characterization methods. Here we introduce a series of dynamic circuit benchmar...
Constant-overhead magic state distillation
Adam Wills, Min-Hsiu Hsieh, Hayata Yamasaki·Aug 14, 2024
Most schemes for realistic quantum computing require access to so-called magic states to allow universal quantum computing. Because the preparation process may be noisy, magic state distillation methods are needed to improve their accuracy and suppre...
Using linear and nonlinear entanglement witnesses to generate and detect bound entangled states on an IBM quantum processor
Vaishali Gulati, Gayatri Singh, K. Dorai·Aug 14, 2024
We investigate bound entanglement in three-qubit mixed states which are diagonal in the Greenberger-Horne-Zeilinger (GHZ) basis. Entanglement in these states is detected using entanglement witnesses and the analysis focuses on states exhibiting posit...
Hybrid entanglement and error correction in a scalable quantum network node
Xiu-Ying Chang, Pan-Yu Hou, Wen-Gang Zhang +7 more·Aug 14, 2024
Recent breakthroughs have ushered the quantum network into a new era, where quantum information can be stored, transferred, and processed across multiple nodes on a metropolitan scale. A key challenge in this new era is enhancing the capabilities of ...
The x+y Floquet code: A simple example for topological quantum computation in the path integral approach
Andreas Bauer·Aug 14, 2024
The path-integral approach to topological quantum error correction provides a unified way to construct and analyze fault-tolerant circuits in spacetime. In this work, we demonstrate its utility and versatility at hand of a simple example: We construc...
A Quantum-Inspired Analysis of Human Disambiguation Processes
Daphne Wang·Aug 14, 2024
Formal languages are essential for computer programming and are constructed to be easily processed by computers. In contrast, natural languages are much more challenging and instigated the field of Natural Language Processing (NLP). One major obstacl...
Post-quantum encryption algorithms of high-degree 3-variable polynomial congruences: BS cryptosystems and BS key generation
N. Daras·Aug 14, 2024
We will construct post-quantum encryption algorithms based on three-variable polynomial Beal-Schur congruence. After giving a proof of Beal's conjecture and citing some applications of it to selected cases where the discrete logarithm and some of its...
Feedforward Quantum Singular Value Transformation
Yulong Dong, Dong An, M. Niu·Aug 14, 2024
In this paper, we introduce a major advancement in Quantum Singular Value Transformation (QSVT) through the development of Feedforward QSVT (FQSVT), a framework that significantly enhances the efficiency and robustness of quantum algorithm design. By...
Sum-of-Squares inspired Quantum Metaheuristic for Polynomial Optimization with the Hadamard Test and Approximate Amplitude Constraints
Iria W. Wang, Robin Brown, T. Patti +3 more·Aug 14, 2024
Quantum computation shows promise for addressing numerous classically intractable problems, such as optimization tasks. Many optimization problems are NP-hard, meaning that they scale exponentially with problem size and thus cannot be addressed at sc...
Neural Quantum States and Peaked Molecular Wave Functions: Curse or Blessing?
Aleksei Malyshev, Markus Schmitt, A. Lvovsky·Aug 14, 2024
The field of neural quantum states has recently experienced a tremendous progress, making them a competitive tool of computational quantum many-body physics. However, their largest achievements to date mostly concern interacting spin systems, while t...
Strategies for optimizing double-bracket quantum algorithms
Xiaoyue Li, Matteo Robbiati, Andrea Pasquale +4 more·Aug 14, 2024
Recently double-bracket quantum algorithms have been proposed as a way to compile circuits for approximating eigenstates. Physically, they consist of appropriately composing evolutions under an input Hamiltonian together with diagonal evolutions. Her...
A Multilevel Approach for Solving Large-Scale QUBO Problems with Noisy Hybrid Quantum Approximate Optimization
Filip B. Maciejewski, Bao Gia Bach, Maxime Dupont +5 more·Aug 14, 2024
Quantum approximate optimization is one of the promising candidates for useful quantum computation, particularly in the context of finding approximate solutions to Quadratic Unconstrained Binary Optimization (QUBO) problems. However, the existing qua...
Asymptotic quantification of entanglement with a single copy
Ludovico Lami, Mario Berta, Bartosz Regula·Aug 13, 2024
Despite the central importance of quantum entanglement in quantum technologies, the understanding of the optimal ways to exploit it is still beyond our reach, and even measuring entanglement in an operationally meaningful way is prohibitively difficu...
Vestigial Gapless Boson Density Wave Emerging between $ν= 1/2$ Fractional Chern Insulator and Finite-Momentum Supersolid
Hongyu Lu, Han-Qing Wu, Bin-Bin Chen +1 more·Aug 13, 2024
The roton-triggered charge-density-wave (CDW)is widely studied in fractional quantum Hall (FQH) and fractional Chern insulator (FCI) systems, and there also exist field theoretical and numerical realizations of continuous transition from FCI to super...
QIris: Quantum Implementation of Rainbow Table Attacks
Lee Jun Quan, Tan Jia Ye, Goh Geok Ling +1 more·Aug 13, 2024
This paper explores the use of Grover's Algorithm in the classical rainbow table, uncovering the potential of integrating quantum computing techniques with conventional cryptographic methods to develop a Quantum Rainbow Table Proof-of-Concept. This l...
Robustness of optimal quantum annealing protocols
Niklas Funcke, Julian Berberich·Aug 13, 2024
Noise in quantum computing devices poses a key challenge in their realization. In this paper, we study the robustness of optimal quantum annealing (QA) protocols against coherent control errors, which are multiplicative Hamiltonian errors causing det...
Multi-Layered Security System: Integrating Quantum Key Distribution with Classical Cryptography to Enhance Steganographic Security
Arman Sykot, Md Shawmoon Azad, Wahida Rahman Tanha +3 more·Aug 13, 2024
In this paper, we present a novel cryptographic system that integrates Quantum Key Distribution (QKD) with classical encryption techniques to secure steganographic images. Our approach leverages the E91 QKD protocol to generate a shared secret key be...
Iterative quantum optimization of spin glass problems with rapidly oscillating transverse fields
Brandon A. Barton, Jacob Sagal, Sean Feeney +5 more·Aug 13, 2024
In this work, we introduce a new iterative quantum algorithm, called Iterative Symphonic Tunneling for Satisfiability problems (IST-SAT), which solves quantum spin glass optimization problems using high-frequency oscillating transverse fields. IST-SA...
From Maximum Cut to Maximum Independent Set
Chuixiong Wu, Jianan Wang, Fen Zuo·Aug 13, 2024
The Maximum Cut (Max-Cut) problem could be naturally expressed either in a Quadratic Unconstrained Binary Optimization (QUBO) formulation, or as an Ising model. It has long been known that the Maximum Independent Set (MIS) problem could also be relat...