Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
31,274
This Month
1,272
Today
0
Research Volume
15,417 papers in 12 months (-6% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Realizing two-qubit gates through mode engineering on a trapped-ion quantum computer
Ming Li, N. Nguyen, Alaina M. Green +3 more·Aug 2, 2022
Two-qubit gates are a fundamental constituent of a quantum computer and typically its most challenging operation. In a trapped-ion quantum computer, this is typically implemented with laser beams which are modulated in amplitude, frequency, phase, or...
Partition-function estimation: Quantum and quantum-inspired algorithms
Andrew Jackson, Theodoros Kapourniotis, A. Datta·Aug 1, 2022
We present two algorithms, one quantum and one classical, for estimating partition functions of quantum spin Hamiltonians. The former is a DQC1 (Deterministic quantum computation with one clean qubit) algorithm, and the first such for complex temperat...
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 ...
Exact and efficient Lanczos method on a quantum computer
William M. Kirby, M. Motta, Antonio Mezzacapo·Aug 1, 2022
We present an algorithm that uses block encoding on a quantum computer to exactly construct a Krylov space, which can be used as the basis for the Lanczos method to estimate extremal eigenvalues of Hamiltonians. While the classical Lanczos method has...
An improved two-threshold quantum segmentation algorithm for NEQR image
Lu Wang, Zhiliang Deng, Wenjie Liu·Aug 1, 2022
The quantum image segmentation algorithm is to divide a quantum image into several parts, but most of the existing algorithms use more quantum resource(qubit) or cannot process the complex image. In this paper, an improved two-threshold quantum segme...
Real-Time Krylov Theory for Quantum Computing Algorithms
Yi-Hsiang Shen, Katherine Klymko, James Sud +3 more·Aug 1, 2022
Quantum computers provide new avenues to access ground and excited state properties of systems otherwise difficult to simulate on classical hardware. New approaches using subspaces generated by real-time evolution have shown efficiency in extracting ...
Bound states in microwave QED: Crossover from waveguide to cavity regime
N. Kumar, Andr'es Rosario Hamann, R. Navarathna +3 more·Aug 1, 2022
Light-matter interaction at the single-quantum level is the heart of many regimes of high fundamental importance to modern quantum technologies. Strong interaction of a qubit with a single photon of an electromagnetic field mode is described by the c...
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...
Generation of a Single-Cycle Acoustic Pulse: A Scalable Solution for Transport in Single-Electron Circuits
Junliang Wang, Shunsuke Ota, Hermann Edlbauer +13 more·Jul 31, 2022
The synthesis of single-cycle, compressed optical and microwave pulses sparked novel areas of fundamental research. In the field of acoustics, however, such a generation has not been introduced yet. For numerous applications, the large spatial extent...
Parameter-Parallel Distributed Variational Quantum Algorithm
Yun-Fei Niu, Shuo Zhang, Chen Ding +2 more·Jul 31, 2022
Variational quantum algorithms (VQAs) have emerged as a promising near-term technique to explore practical quantum advantage on noisy intermediate-scale quantum (NISQ) devices. However, the inefficient parameter training process due to the incompatib...
Quantum Error Correction: Noise-Adapted Techniques and Applications
Akshaya Jayashankar, Prabha Mandayam·Jul 31, 2022
The quantum computing devices of today have tens to hundreds of qubits that are highly susceptible to noise due to unwanted interactions with their environment. The theory of quantum error correction provides a scheme by which the effects of such noi...
Few Quantum Algorithms on Amplitude Distribution
Debajyoti Bera, Tharrmashastha Sapv·Jul 30, 2022
Amplitude filtering is concerned with identifying basis-states in a superposition whose amplitudes are greater than a specified threshold; probability filtering is defined analogously for probabilities. Given the scarcity of qubits, the focus of this...
Bang-bang algorithms for quantum many-body ground states: A tensor network exploration
Ruo‐Yong Wang, T. Hsieh, G. Vidal·Jul 30, 2022
We use matrix product techniques to investigate the performance of two algorithms for obtaining the ground state of a quantum many-body Hamiltonian $H = H_A + H_B$ in infinite systems. The first algorithm is a generalization of the quantum approximat...
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...
Quantum multi-programming for Grover’s search
Gilchan Park, Kun Zhang, Kwangmin Yu +1 more·Jul 29, 2022
Quantum multi-programming is a method utilizing contemporary noisy intermediate-scale quantum computers by executing multiple quantum circuits concurrently. Despite early research on it, the research remains on quantum gates or small-size quantum alg...
QuCloud+: A Holistic Qubit Mapping Scheme for Single/Multi-programming on 2D/3D NISQ Quantum Computers
Lei Liu, Xinglei Dou·Jul 29, 2022
Qubit mapping for NISQ superconducting quantum computers is essential to fidelity and resource utilization. The existing qubit mapping schemes meet challenges, e.g., crosstalk, SWAP overheads, diverse device topologies, etc., leading to qubit resourc...
Fast quantum circuit cutting with randomized measurements
Angus Lowe, Matija Medvidovi'c, Anthony Joseph Hayes +4 more·Jul 29, 2022
We propose a new method to extend the size of a quantum computation beyond the number of physical qubits available on a single device. This is accomplished by randomly inserting measure-and-prepare channels to express the output state of a large circ...
Quantum Vulnerability Analysis to Guide Robust Quantum Computing System Design
Fang Qi, Kaitlin N. Smith, Travis Lecompte +4 more·Jul 29, 2022
While quantum computers provide exciting opportunities for information processing, they currently suffer from noise during computation that is not fully understood. Incomplete noise models have led to discrepancies between quantum program success rat...
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...