Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
How much entanglement is needed for topological codes and mixed states with anomalous symmetry?
Zhi Li, Dongjin Lee, Beni Yoshida·May 13, 2024
It is known that particles with exotic properties can emerge in systems made of simple constituents such as qubits, due to long-range quantum entanglement. In this paper, we provide quantitative characterizations of entanglement necessary for emergen...
Distributed Quantum Computation with Minimum Circuit Execution Time over Quantum Networks
Ranjani G. Sundaram, Himanshu Gupta, C. Ramakrishnan·May 13, 2024
Present quantum computers are constrained by limited qubit capacity and restricted physical connectivity, leading to challenges in large-scale quantum computations. Distributing quantum computations across a network of quantum computers is a promisin...
Barren plateaus are amplified by the dimension of qudits
Lucas Friedrich, Tiago de Souza Farias, Jonas Maziero·May 13, 2024
Variational quantum algorithms (VQAs) have emerged as pivotal strategies for attaining quantum advantage in diverse scientific and technological domains, notably within quantum neural networks. However, despite their potential, VQAs encounter signifi...
Hype or Heuristic? Quantum Reinforcement Learning for Join Order Optimisation
Maja Franz, Tobias Winker, S. Groppe +1 more·May 13, 2024
Identifying optimal join orders (JOs) stands out as a key challenge in database research and engineering. Owing to the large search space, established classical methods rely on approximations and heuristics. Recent efforts have successfully explored ...
Symmetric Clifford twirling for cost-optimal quantum error mitigation in early FTQC regime
Kento Tsubouchi, Yosuke Mitsuhashi, Kunal Sharma +1 more·May 13, 2024
Twirling noise affecting quantum gates is essential in understanding and controlling errors, but applicable operations to noise are usually restricted by symmetries inherent in quantum gates. In this work, we propose symmetric Clifford twirling, a Cl...
An Abstract Model and Efficient Routing for Logical Entangling Gates on Zoned Neutral Atom Architectures
Yannick Stade, Ludwig Schmid, Lukas Burgholzer +1 more·May 13, 2024
Recent experimental achievements have demonstrated the potential of neutral atom architectures for fault-tolerant quantum computing. These architectures feature the dynamic rearrangement of atoms during computation-enabling nearly arbitrary two-dimen...
Hamiltonian-Based Quantum Reinforcement Learning for Neural Combinatorial Optimization
G. Kruse, Rodrigo Coehlo, A. Rosskopf +2 more·May 13, 2024
Advancements in Quantum Computing (QC) and Neural Combinatorial Optimization (NCO) represent promising steps in tackling complex computational challenges. On the one hand, Variational Quantum Algorithms such as QAOA can be used to solve a wide range ...
Towards Robust Benchmarking of Quantum Optimization Algorithms
David Bucher, N. Kraus, Jonas Blenninger +3 more·May 13, 2024
Benchmarking the performance of quantum optimization algorithms is crucial for identifying utility for industry-relevant use cases. However, Benchmarking processes most often vary between optimization applications and depend on user-specified goals. ...
Oracle Separation between Noisy Quantum Polynomial Time and the Polynomial Hierarchy
Nai-Hui Chia, Min-Hsiu Hsieh, Shih-Han Hung +1 more·May 12, 2024
This work investigates the oracle separation between the physically motivated complexity class of noisy quantum circuits, inspired by definitions such as those presented by Chen, Cotler, Huang, and Li (2022). We establish that with a constant error r...
Qsyn: A Developer-Friendly Quantum Circuit Synthesis Framework for NISQ Era and Beyond
Mu-Te Lau, Chin-Yi Cheng, Chengyang Lu +12 more·May 12, 2024
In this paper, we introduce Qsyn, a novel quantum circuit synthesis (QCS) framework designed to facilitate the research, development, testing, and experimentation of QCS algorithms and tools. Our framework is more developer-friendly than other modern...
ZX graphical calculus for continuous-variable quantum processes
Hironari Nagayoshi, W. Asavanant, Ryuhoh Ide +5 more·May 12, 2024
Continuous-variable (CV) quantum information processing is a promising candidate for large-scale fault-tolerant quantum computation. However, analysis of CV quantum process relies mostly on direct computation of the evolution of operators in the Heis...
Equivariant QAOA and the Duel of the Mixers
Boris Tsvelikhovskiy, Ilya Safro, Yuri Alexeev·May 12, 2024
Constructing an optimal mixer for Quantum Approximate Optimization Algorithm (QAOA) Hamiltonian is crucial for enhancing the performance of QAOA in solving combinatorial optimization problems. We present a systematic methodology for constructing the ...
Two-Step Quantum Search Algorithm for Solving Traveling Salesman Problems
Reiko Sato, Cui Gordon, Kazuhiro Saito +3 more·May 12, 2024
Quantum search algorithms, such as Grover's algorithm, are anticipated to efficiently solve constrained combinatorial optimization problems. However, applying these algorithms to the traveling salesman problem (TSP) on a quantum circuit presents a si...
Separable Power of Classical and Quantum Learning Protocols Through the Lens of No-Free-Lunch Theorem
Xinbiao Wang, Yuxuan Du, Kecheng Liu +3 more·May 12, 2024
The No-Free-Lunch (NFL) theorem, which quantifies problem- and data-independent generalization errors regardless of the optimization process, provides a foundational framework for comprehending diverse learning protocols' potential. Despite its signi...
Growth and structure of alpha-Ta films for quantum circuit integration
L. D. Alegria, Alex Abelson, Eunjeong Kim +5 more·May 12, 2024
Tantalum films incorporated into superconducting circuits have exhibited low surface losses, resulting in long-lived qubit states. The remaining loss pathways originate in microscopic defects that manifest as two level systems (TLSs) at low temperatu...
The Algorithm for Solving Quantum Linear Systems of Equations With Coherent Superposition and Its Extended Applications
Qiqing Xia, Qianru Zhu, Huiqin Xie +1 more·May 11, 2024
Many quantum algorithms for attacking symmetric cryptography involve the rank problem of quantum linear equations. In this paper, we first propose two quantum algorithms for solving quantum linear systems of equations with coherent superposition and ...
Efficient Quantum Simulation Algorithms in the Path Integral Formulation
Serene Shum, Nathan Wiebe·May 11, 2024
We provide a new paradigm for quantum simulation that is based on path integration that allows quantum speedups to be observed for problems that are more naturally expressed using the path integral formalism rather than the conventional sparse Hamilt...
Distributed exact generalized Grover’s algorithm
Xu Zhou, Xusheng Xu, Shenggen Zheng +1 more·May 11, 2024
Distributed quantum computation has garnered immense attention in the noisy intermediate-scale quantum (NISQ) era, where each computational node necessitates fewer qubits and quantum gates. In this paper, we focus on a generalized search problem invo...
Quantum computing and quantum optics with recoiled free electrons
Maxim Sirotin, Andrei Rasputnyi, Tomáš Chlouba +2 more·May 10, 2024
Free electrons interacting coherently with optical fields provide a powerful platform for quantum simulation and quantum control. For kiloelectron-volt electron energies, even optical photon emission and absorption produce appreciable quantum recoils...
Arctic: A Field Programmable Quantum Array Scheduling Technique
Ethan Decker·May 10, 2024
Advancements in neutral atom quantum computers have positioned them as a valuable framework for quantum computing, largely due to their prolonged coherence times and capacity for high-fidelity gate operations. Recently, neutral atom computers have en...