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
Entangling Four Logical Qubits beyond Break-Even in a Nonlocal Code.
Yifan Hong, Elijah Durso-Sabina, D. Hayes +1 more·Jun 4, 2024
Quantum error correction protects logical quantum information against environmental decoherence by encoding logical qubits into entangled states of physical qubits. One of the most important near-term challenges in building a scalable quantum compute...
Hybrid Quantum-Classical Convolutional Neural Networks for Image Classification in Multiple Color Spaces
Kwok-Ho Ng, Tingting Song, Zhiquan Liu·Jun 4, 2024
The growing complexity and scale of image processing tasks challenge classical convolutional neural networks (CNNs) with high computational costs. Hybrid quantum-classical convolutional neural networks (HQCNNs) show potential to improve performance b...
Computational Power of Random Quantum Circuits in Arbitrary Geometries
M. DeCross, Reza Haghshenas, Minzhao Liu +34 more·Jun 4, 2024
Empirical evidence for a gap between the computational powers of classical and quantum computers has been provided by experiments that sample the output distributions of two-dimensional quantum circuits. Many attempts to close this gap have utilized ...
Spectroscopy and modeling of $^{171}$Yb Rydberg states for high-fidelity two-qubit gates
Michael Peper, Yiyi Li, Daniel Y. Knapp +8 more·Jun 3, 2024
Highly excited Rydberg states and their interactions play an important role in quantum computing and simulation. These properties can be predicted accurately for alkali atoms with simple Rydberg level structures. However, an extension of these method...
Distributed Quantum Computing in Silicon
F. Afzal, M. Akhlaghi, Stefanie J. Beale +67 more·Jun 3, 2024
Commercially impactful quantum algorithms such as quantum chemistry and Shor's algorithm require a number of qubits and gates far beyond the capacity of any existing quantum processor. Distributed architectures, which scale horizontally by networking...
Optimal Qubit Mapping Search for Encoding Classical Data into Matrix Product State Representation with Minimal Loss
Hyungjun Jeon, Kyungmin Lee, Dongkyu Lee +2 more·Jun 1, 2024
Matrix product state (MPS) offers a framework for encoding classical data into quantum states, enabling the efficient utilization of quantum resources for data representation and processing. This research paper investigates techniques to enhance the ...
Quantum state preparation for multivariate functions
Matthias Rosenkranz, Eric Brunner, Gabriel Marin-Sanchez +5 more·May 31, 2024
A fundamental step of any quantum algorithm is the preparation of qubit registers in a suitable initial state. Often qubit registers represent a discretization of continuous variables and the initial state is defined by a multivariate function. We de...
Quantum encoder for fixed-Hamming-weight subspaces
Renato M S Farias, Thiago O. Maciel, Giancarlo Camilo +3 more·May 30, 2024
We present an exact $n$-qubit computational-basis amplitude encoder of real- or complex-valued data vectors of $d=\binom{n}{k}$ components into a subspace of fixed Hamming weight $k$. This represents a polynomial space compression of degree $k$. The ...
Efficient sparse state preparation via quantum walks
A. Gonzales, R. Herrman, Colin Campbell +4 more·May 30, 2024
Continuous-time quantum walks (CTQWs) on dynamic graphs, referred to as dynamic CTQWs, are a recently introduced universal model of computation that offers a new paradigm in which to envision quantum algorithms. In this work, we develop an algorithm ...
Adaptable Weighted Token Swapping Algorithm for Optimal Multi-Qubit Pathfinding
Gary J Mooney·May 29, 2024
Quantum computing promises breakthroughs in simulating and solving complex, classically intractable problems. However, current noisy intermediate-scale quantum (NISQ) devices are relatively small and error-prone, prohibiting large-scale computations....
Learning the Expressibility of Quantum Circuit Ansatz Using Transformer
Fei Zhang, Jierui Li, Zhimin He +1 more·May 29, 2024
With the exponentially faster computation for certain problems, quantum computing has garnered significant attention in recent years. Variational quantum algorithms are crucial methods to implement quantum computing, and an appropriate task‐specific ...
Truncated Modular Exponentiation Operators: A Strategy for Quantum Factoring
R. Singleton·May 27, 2024
Modular exponentiation (ME) operators are one of the fundamental components of Shor's algorithm, and the place where most of the quantum resources are deployed. These operators are often referred to as the bottleneck of the algorithm. I propose a met...
Surface Code Stabilizer Measurements for Rydberg Atoms
Sven Jandura, Laura Pecorari, Guido Pupillo·May 26, 2024
We consider stabilizer measurements for surface codes with neutral atoms and identify gate protocols that minimize logical error rates in the presence of a fundamental error source -- spontaneous emission from Rydberg states. We demonstrate that logi...
Toffoli gates solve the tetrahedron equations
Akash Sinha, Pramod Padmanabhan, Vladimir Korepin·May 26, 2024
The circuit model of quantum computation can be interpreted as a scattering process. In particular, factorised scattering operators result in integrable quantum circuits that provide universal quantum computation and are potentially less noisy. These...
Hybrid Quantum Downsampling Networks
Yifeng Peng, Xinyi Li, Zhiding Liang +1 more·May 25, 2024
Classical max pooling plays a crucial role in reducing data dimensionality among various well-known deep learning models, yet it often leads to the loss of vital information. We proposed a novel hybrid quantum downsampling module (HQD), which is a no...
Efficient Quantum Circuit Encoding of Object Information in 2D Ray Casting
Seungjae Lee, Suhui Jeong, Jiwon Seo·May 25, 2024
Quantum computing holds the potential to solve problems that are practically unsolvable by classical computers due to its ability to significantly reduce time complexity. We aim to harness this potential to enhance ray casting, a pivotal technique in...
Error crafting in mixed quantum gate synthesis
Nobuyuki Yoshioka, Seiseki Akibue, Hayata Morisaki +2 more·May 24, 2024
In fault-tolerant quantum computing, logical errors in unitary gate synthesis are comparable to the noise inherent in the gates themselves. While mixed synthesis can suppress such coherent errors quadratically, there is no clear understanding of its ...
Parametrization and optimizability of pulse-level variational quantum eigensolvers
Kyle Sherbert, Hisham Amer, S. Economou +2 more·May 24, 2024
In conventional variational quantum eigensolvers (VQEs), trial states are prepared by applying series of parameterized gates to a reference state, with the gate parameters being varied to minimize the energy of the target system. Recognizing that the...
Digitized counterdiabatic quantum algorithms for logistics scheduling
Archismita Dalal, I. Montalban, N. N. Hegade +7 more·May 24, 2024
We study a job shop scheduling problem for an automatized robot in a high-throughput laboratory and a travelling salesperson problem with recently proposed digitized counterdiabatic quantum optimization (DCQO)algorithms. In DCQO, we find the solution...
Synthetic High Angular Momentum Spin Dynamics in a Microwave Oscillator
Saswata Roy, Alen Senanian, Christopher S. Wang +10 more·May 24, 2024
Spins and oscillators are foundational to much of physics and applied sciences. For quantum information, a spin 1/2 exemplifies the most basic unit, a qubit. High angular momentum spins (HAMSs) and harmonic oscillators provide multilevel manifolds wh...