Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,008 papers in 12 months (-3% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Redefining Lexicographical Ordering: Optimizing Pauli String Decompositions for Quantum Compiling
Qunsheng Huang, David Winderl, A. M. D. Griend +1 more·Aug 1, 2024
In quantum computing, the efficient optimization of Pauli string decompositions is a crucial aspect for the compilation of quantum circuits for many applications, such as chemistry simulations and quantum machine learning. In this paper, we propose a...
Pulse family optimization for parametrized quantum gates using spectral clustering
Robert de Keijzer, J. Snijders, A. Carvalho +1 more·Jul 31, 2024
Parametrized gate circuits are used in plentiful applications in the current NISQ era of quantum computing. These parametrized gates are chiefly implemented using analytically found pulse protocols, often yielding suboptimal gate times, and consequen...
Scaling of contraction costs for entanglement renormalization algorithms including tensor Trotterization and variational Monte Carlo
Thomas Barthel, Q. Miao·Jul 30, 2024
The multi-scale entanglement renormalization ansatz (MERA) is a hierarchical class of tensor network states motivated by the real-space renormalization group. It is used to simulate strongly correlated quantum many-body systems. For prominent MERA st...
AI Methods for Approximate Compiling of Unitaries
David Kremer, Victor Villar, Sanjay Vishwakarma +2 more·Jul 30, 2024
This paper explores artificial intelligence (AI) methods for the approximate compiling of unitaries, focusing on the use of fixed two-qubit gates and arbitrary single-qubit rotations typical in superconducting hardware. Our approach involves three ma...
Fast Gates of Detuned Cat Qubit
A. Schlabes, R. Bhowmick, M. H. Ansari·Jul 30, 2024
Cat qubits have emerged as a promising candidate for quantum computation due to their higher error-correction thresholds and low resource overheads. In existing literature, the detuning of the two-photon drive is assumed to be zero for implementing s...
Efficient Circuit-Based Quantum State Tomography via Sparse Entry Optimization
Chi-Kwong Li, Kevin Yipu Wu, Zherui Zhang·Jul 29, 2024
Many quantum states arising in algorithms and physical systems occupy only a small, structured subset of the exponentially large Hilbert space, yet standard quantum state tomography fails to exploit this structure. We present an efficient circuit-bas...
Autonomous Bootstrapping of Quantum Dot Devices
Anton Zubchenko, Danielle Middlebrooks, Torbjørn Rasmussen +4 more·Jul 29, 2024
Semiconductor quantum dots (QDs) are a promising platform for multiple different qubit implementations, all of which are voltage controlled by programmable gate electrodes. However, as the QD arrays grow in size and complexity, tuning procedures that...
Modular Quantum Processor with an All-to-All Reconfigurable Router
Xuntao Wu, Haoxiong Yan, Gustav Andersson +10 more·Jul 29, 2024
Superconducting qubits provide a promising approach to large-scale fault-tolerant quantum computing. However, qubit connectivity on a planar surface is typically restricted to only a few neighboring qubits. Achieving longer-range and more flexible co...
Purification and correction of quantum channels by commutation-derived quantum filters
Sowmitra Das, Jinzhao Sun, Michael Hanks +2 more·Jul 29, 2024
Reducing errors is essential for reliable quantum computation. Quantum error mitigation (QEM) and quantum error correction (QEC) are two leading approaches for this task, each with challenges: QEM suffers from high sampling costs and cannot recover s...
Realization of high-fidelity perfect entangler between remote superconducting quantum processors
Juan Song, Shuang Yang, Pei Liu +7 more·Jul 29, 2024
Superconducting qubits, a promising candidate for universal quantum computing, currently face limitations in chip size due to reproducibility, wiring complexity, and packaging modes. Distributed quantum modules offer a viable strategy for constructin...
Benchmarking and Fidelity Response Theory of High-Fidelity Rydberg Entangling Gates
R. Tsai, Xiangkai Sun, Adam L. Shaw +2 more·Jul 29, 2024
The fidelity of entangling operations is a key figure of merit in quantum information processing, especially in the context of quantum error correction. High-fidelity entangling gates in neutral atoms have seen remarkable advancement recently. A full...
Experimental quantum-enhanced kernels on a photonic processor
Zhenghao Yin, Iris Agresti, G. Felice +9 more·Jul 29, 2024
Recently, machine learning had a remarkable impact, from scientific to everyday-life applications. However, complex tasks often imply unfeasible energy and computational power consumption. Quantum computation might lower such requirements, although i...
Impact of Parallel Gating on Gate Fidelities in Linear, Square, and Star Arrays of Noisy Flip‐Flop Qubits
M. De Michielis, E. Ferraro·Jul 29, 2024
Successfully implementing a quantum algorithm involves maintaining a low logical error rate by ensuring the validity of the quantum fault‐tolerance theorem. The required number of physical qubits arranged in an array depends on the chosen Quantum Err...
Anti-Concentration for the Unitary Haar Measure and Applications to Random Quantum Circuits
Bill Fefferman, Soumik Ghosh, Wei Zhan·Jul 28, 2024
We prove a Carbery-Wright style anti-concentration inequality for the unitary Haar measure, by showing that the probability of a polynomial in the entries of a random unitary falling into an $\varepsilon$ range is at most a polynomial in $\varepsilon...
Fast and Parallelizable Logical Computation with Homological Product Codes
Qiang-Da Xu, Hengyun Zhou, Guo Zheng +5 more·Jul 26, 2024
Quantum error correction is necessary to perform large-scale quantum computation but requires extremely large overheads in both space and time. High-rate quantum low-density-parity-check (qLDPC) codes promise a route to reduce qubit numbers, but perf...
Quantum-inspired evolutionary algorithms for feature subset selection: a comprehensive survey
Yelleti Vivek, V. Ravi, P. R. Krishna·Jul 25, 2024
The clever hybridization of quantum computing concepts and evolutionary algorithms (EAs) resulted in a new field called quantum-inspired evolutionary algorithms (QIEAs). Unlike traditional EAs, QIEAs employ quantum bits to adopt a probabilistic repre...
Few-Shot, Robust Calibration of Single Qubit Gates Using Bayesian Robust Phase Estimation
Travis Hurant, Ke-jia Sun, Zhubing Jia +2 more·Jul 25, 2024
Accurate calibration of control parameters in quan-tum gates is crucial for high-fidelity operations, yet it represents a significant time and resource challenge, necessitating periods of downtime for quantum computers. Robust Phase Estimation (RPE) ...
Quantum landscape tomography for efficient single-gate optimization on quantum computers
Matan Ben-Dov, I. Arad, Emanuele G. Dalla Torre·Jul 25, 2024
Circuit optimization is a fundamental task for practical applications of near-term quantum computers. In this work we address this challenge through the powerful lenses of tensor network theory. Our approach involves the full characterization of the ...
Implementing multi-controlled X gates using the quantum Fourier transform
V. Arsoski·Jul 25, 2024
Quantum computing has the potential to solve many complex algorithms in the domains of optimization, arithmetics, structural search, financial risk analysis, machine learning, image processing, and others. Quantum circuits built to implement these al...
The Questionable Influence of Entanglement in Quantum Optimisation Algorithms
Tobias Rohe, Daniëlle Schuman, Jonas Nusslein +3 more·Jul 24, 2024
The performance of the Variational Quantum Eigen-solver (VQE) is promising compared to other quantum algorithms, but also depends significantly on the appropriate design of the underlying quantum circuit. Recent research by Bowles, Ahmend & Schuld, 2...