Quantum Brain

Papers

Live trends in quantum computing research, updated daily from arXiv.

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28,807

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13,810 papers in 12 months (-12% vs prior quarter)

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28,807 papers found

Linear circuit synthesis using weighted Steiner trees

Michele Nir Gavrielov, Alexander Ivrii, Shelly Garion·Aug 7, 2024

CNOT circuits are a common building block of general quantum circuits. The problem of synthesizing and optimizing such circuits has received a lot of attention in the quantum computing literature. This problem is especially challenging for quantum de...

PhysicsComputer Science

Machine Learning Supported Annealing for Prediction of Grand Canonical Crystal Structures

Yannick Couzinié, Yuya Seki, Yusuke Nishiya +4 more·Aug 7, 2024

This study investigates the application of Factorization Machines with Quantum Annealing (FMQA) to address the crystal structure problem (CSP) in materials science. FMQA is a black-box optimization algorithm that combines machine learning with anneal...

Physics

Finding quantum partial assignments by search-to-decision reductions

Jordi Weggemans·Aug 7, 2024

In computer science, many search problems are reducible to decision problems, which implies that finding a solution is as hard as deciding whether a solution exists. A quantum analogue of search-to-decision reductions would be to ask whether a quantu...

PhysicsComputer Science

Principal Trotter observation error with truncated commutators

Langyu Li·Aug 7, 2024

Hamiltonian simulation is one of the most promising applications of quantum computers, and the product formula is one of the most important methods for this purpose. Previous related work has mainly focused on the worst$-$case or average$-$case scena...

Physics

Double-bracket quantum algorithms for high-fidelity ground state preparation

Matteo Robbiati, Edoardo Pedicillo, Andrea Pasquale +12 more·Aug 7, 2024

Ground state preparation is a central application for quantum computers but remains challenging in practice. In this work, we quantitatively investigate the performance and gate counts of double-bracket quantum algorithms (DBQAs) for ground state pre...

Physics

Mutual information fluctuations and non-stabilizerness in random circuits

Arash Ahmadi, J. Helsen, C. Karaca +1 more·Aug 7, 2024

The emergence of quantum technologies has brought much attention to the characterization of quantum resources as well as the classical simulatability of quantum processes. Quantum resources, as quantified by non-stabilizerness, have in one theoretica...

Physics

Quantum Annealing Based Power Grid Partitioning for Parallel Simulation

Carsten Hartmann, Junjie Zhang, C. Calaza +3 more·Aug 7, 2024

Graph partitioning has many applications in power systems, from decentralized state estimation to parallel simulation. Focusing on parallel simulation, optimal grid partitioning minimizes the idle time caused by different simulation times for the sub...

Computer ScienceEngineering

On-Demand Growth of Semiconductor Heterostructures Guided by Physics-Informed Machine Learning

Chaorong Shen, Yuan Li, Wenkang Zhan +15 more·Aug 7, 2024

Developing tailored semiconductor heterostructures on demand represents a critical capability for addressing the escalating performance demands in electronic and optoelectronic devices. However, traditional fabrication methods remain constrained by s...

PhysicsComputer ScienceEngineering

NetQIR: An extension of QIR for distributed quantum computing

F. J. Cardama, Jorge V'azquez-P'erez, César Piñeiro +3 more·Aug 7, 2024

The rapid advancement of quantum computing has highlighted the need for scalable and efficient software infrastructures to fully exploit its potential. Current quantum processors face significant scalability constraints due to the limited number of q...

Computer SciencePhysics

Explicit quantum surrogates for quantum kernel models

Akimoto Nakayama, Hayata Morisaki, Kosuke Mitarai +2 more·Aug 6, 2024

Quantum machine learning (QML) leverages quantum states for data encoding, with key approaches being explicit models that use parameterized quantum circuits and implicit models that use quantum kernels. Implicit models often have lower training error...

Quantum Physics

Binary Triorthogonal and CSS-T Codes for Quantum Error Correction

Eduardo Camps-Moreno, Hiram H. L'opez, Gretchen L. Matthews +3 more·Aug 6, 2024

In this paper, we study binary triorthogonal codes and their relation to CSS-T quantum codes. We characterize the binary triorthogonal codes that are minimal or maximal with respect to the CSS-T poset, and we also study how to derive new triorthogona...

Computer ScienceMathematics

Entanglement-enhanced learning of quantum processes at scale

A. Seif, Senrui Chen, Swarnadeep Majumder +6 more·Aug 6, 2024

Learning unknown processes affecting a quantum system reveals underlying physical mechanisms and enables suppression, mitigation, and correction of unwanted effects. Describing a general quantum process requires an exponentially large number of param...

Physics

QADQN: Quantum Attention Deep Q-Network for Financial Market Prediction

Siddhant Dutta, Nouhaila Innan, Alberto Marchisio +2 more·Aug 6, 2024

Financial market prediction and optimal trading strategy development remain challenging due to market complexity and volatility. Our research in quantum finance and reinforcement learning for decision-making demonstrates the approach of quantum-class...

Computer SciencePhysics

MarQSim: Reconciling Determinism and Randomness in Compiler Optimization for Quantum Simulation

Xiuqi Cao, Junyu Zhou, Yuhao Liu +2 more·Aug 6, 2024

Quantum Hamiltonian simulation, fundamental in quantum algorithm design, extends far beyond its foundational roots, powering diverse quantum computing applications. However, optimizing the compilation of quantum Hamiltonian simulation poses significa...

Computer SciencePhysics

Optimally Generating su(2^{N}) Using Pauli Strings.

Isaac D. Smith, Maxime Cautrès, David T. Stephen +1 more·Aug 6, 2024

Any quantum computation consists of a sequence of unitary evolutions described by a finite set of Hamiltonians. When this set is taken to consist of only products of Pauli operators, we show that the minimal such set generating su(2^{N}) contains 2N+...

PhysicsMedicine

Universal Matrix Multiplication on Quantum Computer

Jiaqi Yao, Tianjian Huang, Ding Liu·Aug 6, 2024

As a core underlying operation in pattern recognition and machine learning, matrix multiplication plays a crucial role in modern machine learning models and constitutes a major contributor to computational expenditure. Hence, researchers have spent d...

PhysicsComputer Science

Benchmarking variational quantum algorithms for combinatorial optimization in practice

Tim Schwägerl, Yahui Chai, T. Hartung +2 more·Aug 6, 2024

Variational quantum algorithms, and in particular variants of the variational quantum eigensolver, have been proposed as approaches to combinatorial optimization (CO) problems. With only shallow ansatz circuits, these methods are considered suitabl...

PhysicsComputer Science

Quantum simulations of chemistry in first quantization with any basis set

Timothy N Georges, Marius Bothe, Christoph Sünderhauf +3 more·Aug 6, 2024

Quantum computation of the energy of molecules and materials is one of the most promising applications of fault-tolerant quantum computers. Practical applications require development of quantum algorithms with reduced resource requirements. Previous ...

Physics

Investigating and improving student understanding of the basics of quantum computing

Peter Hu, Yangqiuting Li, Chandralekha Singh·Aug 6, 2024

Quantum information science and engineering (QISE) is a rapidly developing field that leverages the skills of experts from many disciplines to utilize the potential of quantum systems in a variety of applications. It requires talent from a wide varie...

Physics

Deep unfolded local quantum annealing

Shunta Arai, Satoshi Takabe·Aug 6, 2024

Local quantum annealing (LQA), an iterative algorithm, is designed to solve combinatorial optimization problems. It draws inspiration from QA, which utilizes adiabatic time evolution to determine the global minimum of a given objective function. In t...

Physics
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