Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,830 papers in 12 months (-12% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Engineering the Environment of a Superconducting Qubit with an Artificial Giant Atom
Jingjing Hu, Dengfeng Li, Yufan Qie +4 more·Oct 20, 2024
In quantum computing, precise control of system-environment coupling is essential for high-fidelity gates, measurements, and networking. We present an architecture that employs an artificial giant atom from waveguide quantum electrodynamics to tailor...
Assessing Quantum Extreme Learning Machines for Software Testing in Practice
Asmar Muqeet, Hassan Sartaj, Aitor Arrieta +6 more·Oct 20, 2024
Machine learning has been extensively applied for classical software testing activities such as test generation, minimization, and prioritization. Along the same lines, there has been interest in applying quantum machine learning to classical softwar...
A Hybrid Quantum Solver for the Lorenz System
S. F. Hafshejani, D. Gaur, Arundhati Dasgupta +3 more·Oct 20, 2024
We develop a hybrid classical–quantum method for solving the Lorenz system. We use the forward Euler method to discretize the system in time, transforming it into a system of equations. This set of equations is solved by using the Variational Quantum...
Quantum imaginary time evolution and UD-MIS problem
Victor A. Penas, Marcelo Losada, Pedro W. Lamberti·Oct 19, 2024
In this work we apply a procedure based on the quantum imaginary time evolution method to solve the unit-disk maximum independent set problem. Numerical simulations were performed for instances of 6, 8 and 10-qubits graphs. We have found that the fai...
Joint encryption and error correction for secure quantum communication
Nitin Jha, Abhishek Parakh, M. Subramaniam·Oct 19, 2024
Secure quantum networks are a bedrock requirement for developing a future quantum internet. However, quantum channels are susceptible to channel noise that introduce errors in the transmitted data. The traditional approach to providing error correcti...
Quantum-Classical Computing via Tensor Networks
Nathaniel Tornow, C. Mendl, Pramod Bhatotia·Oct 19, 2024
Circuit knitting offers a promising path to the scalable execution of large quantum circuits by breaking them into smaller sub-circuits whose output is recombined through classical postprocessing. However, current techniques face excessive overhead d...
LUCI in the Surface Code with Dropouts
Dripto M. Debroy, Matt McEwen, Craig Gidney +2 more·Oct 18, 2024
Recently, usage of detecting regions facilitated the discovery of new circuits for fault-tolerantly implementing the surface code. Building on these ideas, we present LUCI, a framework for constructing fault-tolerant circuits flexible enough to const...
Local Thermal Operations and Classical Communication
Rafał Bistroń, Jakub Czartowski·Oct 18, 2024
In quantum thermodynamics, understanding the interplay between locality, thermal constraints, and communication remains an open challenge. In this manuscript, we introduce Local Thermal Operations and Classical Communication (LTOCC), a novel operatio...
Nearly query-optimal classical shadow estimation of unitary channels
Zihao Li, Changhao Yi, You Zhou +1 more·Oct 18, 2024
Classical shadow estimation (CSE) is a powerful tool for learning the properties of quantum states and quantum processes. Here we consider the CSE task for quantum unitary channels. By querying an unknown unitary channel $\mathcal{U}$ multiple times ...
Explicit error bounds with commutator scaling for time-dependent product and multi-product formulas
Kaoru Mizuta, Tatsuhiko N. Ikeda, Keisuke Fujii·Oct 18, 2024
Product formula (PF), which approximates the time evolution under a many-body Hamiltonian by the product of local time evolution operators, is one of the central approaches for simulating quantum dynamics by quantum computers. It has been of great in...
Efficient charge-preserving excited state preparation with variational quantum algorithms
Zohim Chandani, Kazuki Ikeda, Zhong-Bo Kang +7 more·Oct 18, 2024
Determining the spectrum and wave functions of excited states of a system is crucial in quantum physics and chemistry. Low-depth quantum algorithms, such as the Variational Quantum Eigensolver (VQE) and its variants, can be used to determine the grou...
Quantum computation of SU(2) lattice gauge theory with continuous variables
Victor Ale, Nora M. Bauer, Raghav G. Jha +2 more·Oct 18, 2024
We present a quantum computational framework for pure SU(2) lattice gauge theory, using continuous variables instead of discrete qubits to represent the infinite-dimensional Hilbert space of the gauge fields. We consider a ladder as well as a two-dim...
Smolyak-algorithm-assisted robust control of quantum systems with uncertainties
Zigui Zhang, Z. Miao, Xiu-Hao Deng·Oct 18, 2024
Efficient and systematic numerical methods for robust control design are crucial in quantum systems due to inevitable uncertainties or disturbances. We propose a novel approach that models uncertainties as random variables and quantifies robustness u...
(Nearly) Optimal Time-dependent Hamiltonian Simulation
Nhat A. Nghiem·Oct 18, 2024
We describe a simple quantum algorithm to simulate time-dependent Hamiltonian, extending the methodology of quantum signal processing. The framework achieves optimal scaling up to some factor with respect to other parameters, and nearly optimal in in...
Post-measurement Quantum Monte Carlo
Kriti Baweja, David J. Luitz, Samuel J. Garratt·Oct 17, 2024
We show how the effects of large numbers of measurements on many-body quantum ground and thermal states can be studied using Quantum Monte Carlo (QMC). Density matrices generated by measurement in this setting feature products of many local non-unita...
Solving Helmholtz problems with finite elements on a quantum annealer
Arnaud Rémi, François Damanet, Christophe Geuzaine·Oct 17, 2024
Solving Helmholtz problems using finite elements leads to the resolution of a linear system which is challenging to solve for classical computers. In this paper, we investigate how quantum annealers could address this challenge. We first express the ...
Fast-forwarding quantum algorithms for linear dissipative differential equations
Dong An, Akwum Onwunta, Gengzhi Yang·Oct 17, 2024
We establish improved complexity estimates of quantum algorithms for linear dissipative ordinary differential equations (ODEs) and show that the time dependence can be fast-forwarded to be sub-linear. Specifically, we show that a quantum algorithm ba...
Measurement-free, scalable, and fault-tolerant universal quantum computing.
Friederike Butt, David F. Locher, Katharina Brechtelsbauer +2 more·Oct 17, 2024
Reliable execution of large-scale quantum algorithms requires robust underlying operations, which is addressed by quantum error correction (QEC). Most modern QEC protocols rely on measurements and feed-forward operations, which are experimentally dem...
Co-designing Transmon devices for control with simple pulses
N. Wittler, S. Machnes, Frank K. Wilhelm·Oct 17, 2024
In the current NISQ era, there is demand for functional quantum devices to solve relevant computational problems, which motivates a utilitarian perspective on device design: The goal is to create a device that is able to run a given algorithm with st...
Exploiting recursive structures for the design of novel quantum primitives
Ning Bao, Gun Suer·Oct 17, 2024
The advent of fault-tolerant quantum computers marks a significant milestone, yet the development of practical quantum algorithms remains a critical challenge. Effective quantum algorithms are essential for leveraging the power of quantum computers, ...