Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
27,694
This Month
1,159
Today
0
Research Volume
13,008 papers in 12 months (-3% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Double-bracket quantum algorithms for high-fidelity ground state preparation
Matteo Robbiati, Edoardo Pedicillo, Andrea Pasquale +12 more·Aug 7, 2024
Ground state preparation is a central application for quantum computers but remains challenging in practice. In this work, we quantitatively investigate the performance and gate counts of double-bracket quantum algorithms (DBQAs) for ground state pre...
Explicit quantum surrogates for quantum kernel models
Akimoto Nakayama, Hayata Morisaki, Kosuke Mitarai +2 more·Aug 6, 2024
Quantum machine learning (QML) leverages quantum states for data encoding, with key approaches being explicit models that use parameterized quantum circuits and implicit models that use quantum kernels. Implicit models often have lower training error...
Investigating and improving student understanding of the basics of quantum computing
Peter Hu, Yangqiuting Li, Chandralekha Singh·Aug 6, 2024
Quantum information science and engineering (QISE) is a rapidly developing field that leverages the skills of experts from many disciplines to utilize the potential of quantum systems in a variety of applications. It requires talent from a wide varie...
Universal Matrix Multiplication on Quantum Computer
Jiaqi Yao, Tianjian Huang, Ding Liu·Aug 6, 2024
As a core underlying operation in pattern recognition and machine learning, matrix multiplication plays a crucial role in modern machine learning models and constitutes a major contributor to computational expenditure. Hence, researchers have spent d...
Entanglement-enhanced learning of quantum processes at scale
A. Seif, Senrui Chen, Swarnadeep Majumder +6 more·Aug 6, 2024
Learning unknown processes affecting a quantum system reveals underlying physical mechanisms and enables suppression, mitigation, and correction of unwanted effects. Describing a general quantum process requires an exponentially large number of param...
Quantum Transfer Learning for MNIST Classification Using a Hybrid Quantum-Classical Approach
Soumyadip Sarkar·Aug 5, 2024
We implement a hybrid quantum-classical model for image classification that compresses MNIST digit images into a low-dimensional feature space and then maps these features onto a 5-qubit quantum state. First, an autoencoder compresses each $28\times2...
Classical Communication Cost of a Bipartite Quantum Channel Assisted by Non-Signaling Correlations
Chengkai Zhu, Xuanqiang Zhao, Xin Wang·Aug 5, 2024
Understanding the classical communication cost of simulating a quantum channel is a fundamental problem in quantum information theory, which becomes even more intriguing when considering the role of non-locality in quantum information processing. Thi...
Invested and Potential Magic Resources in Measurement-Based Quantum Computation.
Gong-Chu Li, Lei Chen, Si-Qi Zhang +8 more·Aug 4, 2024
Magic states and magic gates are crucial for achieving universal quantum computation, but important questions about how magic resources should be implemented to attain maximal quantum advantage have remained unexplored, especially in the context of m...
Using detector likelihood for benchmarking quantum error correction
Ian Hesner, Bence Het'enyi, James R. Wootton·Aug 4, 2024
The behavior of real quantum hardware differs strongly from the simple error models typically used when simulating quantum error correction. Error processes are far more complex than simple depolarizing noise applied to single gates, and error rates ...
High Ground State Overlap via Quantum Embedding Methods
Mihael Eraković, Freek Witteveen, Dylan Harley +7 more·Aug 4, 2024
Quantum computers can accurately compute ground state energies using phase estimation, but this requires a guiding state that has significant overlap with the true ground state. For large molecules and extended materials, it becomes difficult to find...
Operator space fragmentation in perturbed Floquet-Clifford circuits
Marcell D. Kovács, Christopher J. Turner, Lluis Masanes +1 more·Aug 2, 2024
Floquet quantum circuits are able to realise a wide range of non-equilibrium quantum states, exhibiting quantum chaos, topological order and localisation. In this work, we investigate the stability of operator localisation and emergence of chaos in r...
Radiofrequency cascade readout of coupled spin qubits
Jacob F. Chittock-Wood, Ross C. C. Leon, Michael A. Fogarty +12 more·Aug 2, 2024
Silicon spin qubits based on metal-oxide-semiconductor (MOS) technology are compatible with semiconductor manufacturing and offer a route to scalable quantum processing. However, spin readout typically relies on proximal charge sensors, which add arc...
Generalised Circuit Partitioning for Distributed Quantum Computing
Felix Burt, Kuan-Cheng Chen, Kin K. Leung·Aug 2, 2024
Distributed quantum computing (DQC) is a new paradigm aimed at scaling up quantum computing via the interconnection of smaller quantum processing units (QPUs). Shared entanglement allows teleportation of both states and gates between QPUs. This leads...
Error Correction of Transversal cnot Gates for Scalable Surface-Code Computation
K. Sahay, Yingjia Lin, Shilin Huang +2 more·Aug 2, 2024
Recent experimental advances have made it possible to implement logical multiqubit transversal gates on surface codes in a multitude of platforms. A transversal controlled- (t) gate on two surface codes introduces correlated errors across the code bl...
Analyzing Quantum Circuit Depth Reduction with Ancilla Qubits in MCX Gates
Ahmad Bennakhi, Paul Franzon, Gregory T. Byrd·Aug 2, 2024
This paper aims to give readers a high-level overview of the different MCX depth reduction techniques that utilize ancilla qubits. We also exhibit a brief analysis of how they would perform under different quantum topological settings. The techniques...
A Search for High-Threshold Qutrit Magic State Distillation Routines
Shiroman Prakash, Rishabh Singhal·Aug 1, 2024
Determining the best attainable threshold for qudit magic state distillation is directly related to the question of whether or not contextuality is sufficient for universal quantum computation. We show that the performance of a qudit correcting code ...
Optimizing quantum circuits with evolutionary algorithms for stable Boolean gates, elementary cellular automata, and highly entangled quantum states
Shailendra Bhandari, Stefano Nichele, Sergiy Denysov +1 more·Aug 1, 2024
We investigate the potential of bio-inspired evolutionary algorithms for designing quantum circuits with specific goals, focusing on two particular tasks. The first one is motivated by the ideas of Artificial Life that are used to reproduce stochasti...
Resource-efficient algorithm for estimating the trace of quantum state powers
Myeongjin Shin, Junseo Lee, Seungwoo Lee +1 more·Aug 1, 2024
Estimating the trace of quantum state powers, Tr(ρk), for k identical quantum states is a fundamental task with numerous applications in quantum information processing, including nonlinear function estimation of quantum states and entanglement detect...
Multi-controlled single-qubit unitary gates based on the quantum Fourier transform and deep decomposition
V. Arsoski·Aug 1, 2024
We will present a few new generalizations of the multi-controlled X (MCX) gate that uses the quantum Fourier transform (QFT). Our focus is on implementations that don’t use ancilla qubits. Firstly, we will optimize QFT-MCX and prove that it is equiva...
Robust Implementation of Discrete-time Quantum Walks in Any Finite-dimensional Quantum System
Biswayan Nandi, S. Singha, Ankana Datta +2 more·Aug 1, 2024
Research has shown that quantum walks can accelerate certain quantum algorithms and act as a universal paradigm for quantum processing. The discrete-time quantum walk (DTQW) model, owing to its discrete nature, stands out as one of the most suitable ...