Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
28,494
This Month
224
Today
0
Research Volume
13,563 papers in 12 months (-18% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum chemistry simulation of ground- and excited-state properties of the sulfonium cation on a superconducting quantum processor
M. Motta, G. O. Jones, J. Rice +5 more·Aug 4, 2022
The computational description of correlated electronic structure, and particularly of excited states of many-electron systems, is an anticipated application for quantum devices. An important ramification is to determine the dominant molecular fragmen...
Quantum approximate optimization algorithm in non-Markovian quantum systems
Bo Yue, Shibei Xue, Yu Pan +1 more·Aug 3, 2022
Although quantum approximate optimization algorithm (QAOA) has demonstrated its quantum supremacy, its performance on Noisy Intermediate-Scale Quantum (NISQ) devices would be influenced by complicated noises, e.g. quantum colored noises. To evaluate ...
Information-theoretic hardness of out-of-time-order correlators
Jordan S. Cotler, T. Schuster, M. Mohseni·Aug 3, 2022
We establish that there are properties of quantum many-body dynamics which are efficiently learnable if we are given access to out-of-time-order correlators (OTOCs), but which require exponentially many operations in the system size if we can only me...
Simulating Quantum Circuits Using Efficient Tensor Network Contraction Algorithms with Subexponential Upper Bound.
T. Wahl, Sergii Strelchuk·Aug 2, 2022
We derive a rigorous upper bound on the classical computation time of finite-ranged tensor network contractions in d≥2 dimensions. Consequently, we show that quantum circuits of single-qubit and finite-ranged two-qubit gates can be classically simula...
Unsupervised quantum machine learning for fraud detection
Oleksandr Kyriienko, E. Magnusson·Aug 2, 2022
We develop quantum protocols for anomaly detection and apply them to the task of credit card fraud detection (FD). First, we establish classical benchmarks based on supervised and unsupervised machine learning methods, where average precision is chos...
Conserved charges in the quantum simulation of integrable spin chains
K. Maruyoshi, T. Okuda, Juan W. Pedersen +3 more·Aug 1, 2022
When simulating the time evolution of quantum many-body systems on a digital quantum computer, one faces the challenges of quantum noise and of the Trotter error due to time discretization. For certain spin chains, it is possible to discretize the ti...
Fast-forwarding quantum simulation with real-time quantum Krylov subspace algorithms
C. Cortes, Iii A. Eugene DePrince, S. Gray·Aug 1, 2022
Quantum subspace diagonalization (QSD) algorithms have emerged as a competitive family of algorithms that avoid many of the optimization pitfalls associated with parameterized quantum circuit algorithms. While the vast majority of the QSD algorithms ...
Proposal for sequential Stern–Gerlach experiment with programmable quantum processors
M. Hu 胡, Haixing 海兴 Miao 缪, Y. Zhang 张·Jul 30, 2022
The historical significance of the Stern–Gerlach (SG) experiment lies in its provision of the initial evidence for space quantization. Over time, its sequential form has evolved into an elegant paradigm that effectively illustrates the fundamental pr...
Application of a variational hybrid quantum-classical algorithm to heat conduction equation and analysis of time complexity
Yangyang Liu, Zhen Chen, Chi-Wang Shu +2 more·Jul 29, 2022
The prosperous development of both hardware and algorithms for quantum computing (QC) potentially prompts a paradigm shift in scientific computing in various fields. As an increasingly active topic in QC, the variational quantum algorithm (VQA) leads...
Domain-Specific Quantum Architecture Optimization
Wan-Hsuan Lin, Daniel Bochen Tan, M. Niu +2 more·Jul 29, 2022
With the steady progress in quantum computing over recent years, roadmaps for upscaling quantum processors have relied heavily on the targeted qubit architectures. So far, similarly to the early age of classical computing, these designs have been cra...
Experimental Simulation of Larger Quantum Circuits with Fewer Superconducting Qubits.
C. Ying, Bin Cheng, You-Wei Zhao +14 more·Jul 28, 2022
Although near-term quantum computing devices are still limited by the quantity and quality of qubits in the so-called NISQ era, quantum computational advantage has been experimentally demonstrated. Moreover, hybrid architectures of quantum and classi...
Simulation of Interaction-Induced Chiral Topological Dynamics on a Digital Quantum Computer.
Jin Ming Koh, Tommy Tai, Ching Hua Lee·Jul 28, 2022
Chiral edge states are highly sought after as paradigmatic topological states relevant to both quantum information processing and dissipationless electron transport. Using superconducting transmon-based quantum computers, we demonstrate chiral topolo...
Towards solving the Fermi-Hubbard model via tailored quantum annealers
Ryan Levy, Zoe Gonzalez Izquierdo, Zhihui Wang +8 more·Jul 28, 2022
The Fermi-Hubbard model (FHM) on a two dimensional square lattice has long been an important testbed and target for simulating fermionic Hamiltonians on quantum hardware. We present an alternative for quantum simulation of FHMs based on an adiabatic ...
Exploring light-cone distribution amplitudes from quantum computing
Tianyin Li, Xingyu Guo, W. K. Lai +6 more·Jul 27, 2022
Light-cone distribution amplitudes (LCDAs) are essential nonperturbative quantities for theoretical predictions of exclusive high-energy processes in quantum chromodynamics (QCD). We demonstrate the prospect of calculating LCDAs on a quantum computer...
Matchgate Shadows for Fermionic Quantum Simulation
Kianna Wan, W. Huggins, Joonho Lee +1 more·Jul 27, 2022
“Classical shadows” are estimators of an unknown quantum state, constructed from suitably distributed random measurements on copies of that state (Huang et al. in Nat Phys 16:1050, 2020, https://doi.org/10.1038/s41567-020-0932-7). In this paper, we a...
Quantum critical dynamics in a 5,000-qubit programmable spin glass
A. King, Jack Raymond, T. Lanting +24 more·Jul 27, 2022
Experiments on disordered alloys^ 1 – 3 suggest that spin glasses can be brought into low-energy states faster by annealing quantum fluctuations than by conventional thermal annealing. Owing to the importance of spin glasses as a paradigmatic computa...
Efficient quantum analytic nuclear gradients with double factorization.
E. Hohenstein, O. Oumarou, Rachael Al-Saadon +4 more·Jul 26, 2022
Efficient representations of the Hamiltonian, such as double factorization, drastically reduce the circuit depth or the number of repetitions in error corrected and noisy intermediate-scale quantum (NISQ) algorithms for chemistry. We report a Lagrang...
Quantum simulation of quantum phase transitions using the convex geometry of reduced density matrices
Samuel Warren, LeeAnn M. Sager-Smith, D. Mazziotti·Jul 26, 2022
Transitions of many-particle quantum systems between distinct phases at absolute-zero temperature, known as quantum phase transitions, require an exacting treatment of particle correlations. In this work, we present a general quantum-computing approa...
Parallelization techniques for quantum simulation of fermionic systems
Jacob Bringewatt, Z. Davoudi·Jul 25, 2022
Mapping fermionic operators to qubit operators is an essential step for simulating fermionic systems on a quantum computer. We investigate how the choice of such a mapping interacts with the underlying qubit connectivity of the quantum processor to e...
Resources for Bosonic Quantum Computational Advantage.
Ulysse Chabaud, M. Walschaers·Jul 24, 2022
Quantum computers promise to dramatically outperform their classical counterparts. However, the nonclassical resources enabling such computational advantages are challenging to pinpoint, as it is not a single resource but the subtle interplay of many...