Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Strategic Code: A Unified Spatio-Temporal Framework for Quantum Error-Correction
Andrew Tanggara, Mile Gu, Kishor Bharti·May 27, 2024
Quantum error-correcting code (QECC) is the central ingredient in fault-tolerant quantum information processing. An emerging paradigm of dynamical QECC shows that one can robustly encode logical quantum information both temporally and spatially in a ...
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...
A consolidated and accessible security proof for finite-size decoy-state quantum key distribution
Jerome Wiesemann, Jan Krause, Devashish Tupkary +3 more·May 26, 2024
In recent years, quantum key distribution (QKD) has evolved from a scientific research field to a commercially available security solution, supported by mathematically formulated security proofs. However, since the knowledge required for a full under...
Treelike process tensor contraction for automated compression of environments
M. Cygorek, B. Lovett, Jonathan Keeling +1 more·May 26, 2024
The algorithm “automated compression of environments” (ACE) [M. Cygorek , ] provides a versatile way of simulating an extremely broad class of open quantum systems. This is achieved by encapsulating the influence of the environment, which is determin...
Variational Quantum Framework for Partial Differential Equation Constrained Optimization
Amit Surana, Abeynaya Gnanasekaran·May 26, 2024
We present a novel variational quantum framework for linear partial differential equation (PDE) constrained optimization problems. Such problems arise in many scientific and engineering domains. For instance, in aerodynamics, the PDE constraints are ...
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...
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...
Dynamic Inhomogeneous Quantum Resource Scheduling with Reinforcement Learning
Linsen Li, Pratyush Anand, Kaiming He +1 more·May 25, 2024
A central challenge in quantum information science and technology is achieving real-time estimation and feedforward control of quantum systems. This challenge is compounded by the inherent inhomogeneity of quantum resources, such as qubit properties ...
Weaving Complex Graph on Simple Low-Dimensional Qubit Lattices
Yuhang Dang, Shyam Dhamapurkar, Xiao–Long Zhu +3 more·May 25, 2024
In quantum computing, the connectivity of qubits placed on two-dimensional chips limits the scalability and functionality of solid-state quantum computers. This paper presents two approaches to constructing complex quantum networks from simple qubit ...
Quantum entanglement of multiple excitons in strained graphene
Gabriel P. Martins, Oleg L. Berman, G. Gumbs +1 more·May 25, 2024
We studied the effects arising from a coherent source of photons on the entanglement between excitons in a strained graphene monolayer. The graphene layer was considered to be embedded in an imperfect optical microcavity. In our investigation, we hav...
Circuit implementation and analysis of a quantum-walk based search complement algorithm
Allan Wing-Bocanegra, C. E. Quintero-Narvaez, S. Venegas-Andraca·May 25, 2024
We propose a modified version of the quantum walk-based search algorithm created by Shenvi, Kempe and Whaley, also known as the SKW algorithm. In our version of the algorithm, we modified the evolution operator of the system so that it is composed by...
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...
Qsco: A Quantum Scoring Module for Open-set Supervised Anomaly Detection
Yifeng Peng, Xinyi Li, Zhiding Liang +1 more·May 25, 2024
Open set anomaly detection (OSAD) is a crucial task that aims to identify abnormal patterns or behaviors in data sets, especially when the anomalies observed during training do not represent all possible classes of anomalies. The recent advances in q...
Anomaly inflow for CSS and fractonic lattice models and dualities via cluster state measurement
Takuya Okuda, Aswin Parayil Mana, Hiroki Sukeno·May 24, 2024
Calderbank-Shor-Steane (CSS) codes are a class of quantum error correction codes that contains the toric code and fracton models. A procedure called foliation defines a cluster state for a given CSS code. We use the CSS chain complex and its tensor p...
eQMARL: Entangled Quantum Multi-Agent Reinforcement Learning for Distributed Cooperation over Quantum Channels
Alexander C. DeRieux, Walid Saad·May 24, 2024
Collaboration is a key challenge in distributed multi-agent reinforcement learning (MARL) environments. Learning frameworks for these decentralized systems must weigh the benefits of explicit player coordination against the communication overhead and...
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 ...
Detecting errors in a quantum network with Pauli checks
Alvin Gonzales, Daniel Dilley, Bikun Li +2 more·May 24, 2024
We apply the quantum error detection scheme Pauli check sandwiching (PCS) to quantum networks by turning it into a distributed multiparty protocol. PCS provides protection on the targeted qubits and generally requires less resource overhead than stan...
Efficient universal qudit control using emulated spin rotations up to <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>d</mml:mi><mml:mo>=</mml:mo><mml:mn>8</mml:mn></mml:mrow></mml:math>
E. Champion, Zihao Wang, R. Parker +1 more·May 24, 2024
Qudits hold great promise for efficient quantum computation and the simulation of high-dimensional quantum systems. Utilizing a local Hilbert space of dimension d>2 is known to speed up certain quantum algorithms relative to their qubit counterparts ...
Schrödinger cat states of a nuclear spin qudit in silicon
Xi Yu, Benjamin Wilhelm, Danielle Holmes +16 more·May 24, 2024
High-dimensional quantum systems are a valuable resource for quantum information processing. They can be used to encode error-correctable logical qubits, which has been demonstrated using continuous-variable states in microwave cavities or the motion...