Quantum Brain

Papers

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

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13,354 papers in 12 months (+7% vs prior quarter)

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6,231 papers found

Efficient quantum circuit compilation for near-term quantum advantage

Yuchen Guo, Shuo Yang·Jan 13, 2025

Quantum noise in real-world devices poses a significant challenge in achieving practical quantum advantage, since accurately compiled and executed circuits are typically deep and highly susceptible to decoherence. To facilitate the implementation of ...

Physics

Robust Hybrid Classical-Quantum Transfer Learning Model for Text Classification Using GPT-Neo 125M with LoRA & SMOTE Enhancement

Santanam Wishal·Jan 12, 2025

This research introduces a hybrid classical-quantum framework for text classification, integrating GPT-Neo 125M with Low-Rank Adaptation (LoRA) and Synthetic Minority Over-sampling Technique (SMOTE) using quantum computing backends. While the GPT-Neo...

Computer SciencePhysics

The Hitchhiker's Guide to QSP pre-processing

S. Skelton·Jan 10, 2025

Quantum signal processing (QSP) relies on a historically costly pre-processing step,"QSP-processing/phase-factor finding."QSP-processing is now a developed topic within quantum algorithms literature, and a beginner accessible review of QSP-processing...

Physics

Faster quantum chemistry simulations on a quantum computer with improved tensor factorization and active volume compilation

Athena Caesura, Cristian L. Cortes, W. Pol +8 more·Jan 10, 2025

Electronic structure calculations of molecular systems are among the most promising applications for fault-tolerant quantum computing (FTQC) in quantum chemistry and drug design. However, while recent algorithmic advancements such as qubitization and...

Physics

Practical Quantum Circuit Implementation for Simulating Coupled Classical Oscillators

Natt Luangsirapornchai, Peeranat Sanglaor, Apimuk Sornsaeng +4 more·Jan 10, 2025

Simulating large-scale coupled-oscillator systems presents substantial computational challenges for classical algorithms, particularly when pursuing first-principles analyses in the thermodynamic limit. Motivated by the quantum algorithm framework pr...

Computer SciencePhysics

Plane-selective manipulations of nuclear spin qubits in a three-dimensional optical tweezer array

Toshi Kusano, Y. Nakamura, Rei Yokoyama +5 more·Jan 10, 2025

One of the central challenges for a practical fault-tolerant quantum computer is scalability. A three-dimensional structure of optical tweezer arrays offers the potential for scaling up neutral atom processors. However, coherent operations, essential...

Physics

Deterministic Fault-Tolerant State Preparation for Near-Term Quantum Error Correction: Automatic Synthesis Using Boolean Satisfiability

Ludwig Schmid, Tom Peham, Lucas Berent +2 more·Jan 9, 2025

To ensure resilience against the unavoidable noise in quantum computers, quantum information needs to be encoded using an error-correcting code, and circuits must have a particular structure to be fault-tolerant. Compilation of fault-tolerant quantum...

PhysicsComputer Science

Non-Markovian Noise Mitigation: Practical Implementation, Error Analysis, and the Role of Environment Spectral Properties

Ke Wang, Xiantao Li·Jan 9, 2025

Quantum error mitigation(QEM), an error suppression strategy without the need for additional ancilla qubits for noisy intermediate-scale quantum~(NISQ) devices, presents a promising avenue for realizing quantum speedups of quantum computing algorithm...

PhysicsMathematics

IQPopt: Fast optimization of instantaneous quantum polynomial circuits in JAX

Erik Recio-Armengol, Joseph Bowles·Jan 8, 2025

IQPopt is a software package designed to optimize large-scale instantaneous quantum polynomial circuits on classical hardware. By exploiting an efficient classical simulation algorithm for expectation value estimation, circuits with thousands of qubi...

Physics

Efficient Protein Ground State Energy Computation via Fragmentation and Reassembly

Laia Coronas Sala, Parfait Atchade-Adelemou Lighthouse Disruptive Innovation S.L., Mit Media Lab·Jan 7, 2025

Protein characterization is one of the key components for understanding the human body and advancing drug discovery processes. While the future of quantum hardware holds the potential to accurately characterize these molecules, current efforts focus ...

Physics

Quantum simulations of defects near the (0001) surface of $\alpha$-Al$_2$O$_3$

Vijaya Begum-Hudde, Yi-Ting Lee, Barbara A Jones +1 more·Jan 7, 2025

Defects in materials are ubiquitous and one of their adverse effects in $\alpha$-Al$_2$O$_3$ is the initiation of corrosion. While this process starts near the surface, the defects involved and their electronic structure need to be elucidated with hi...

Physics

Evolved Quantum Boltzmann Machines

Michele Minervini, Dhrumil Patel, Mark M. Wilde·Jan 6, 2025

We introduce evolved quantum Boltzmann machines as a variational ansatz for quantum optimization and learning tasks. Given two parameterized Hamiltonians $G(θ)$ and $H(φ)$, an evolved quantum Boltzmann machine consists of preparing a thermal state of...

Quantum Physicscond-mat.stat-mech

Simulation of entanglement based quantum networks for performance characterization

David Pérez-Castro, Juan Fernández-Herrerín, Ana Fernández Vilas +2 more·Jan 6, 2025

Entanglement-based networks (EBNs) enable general-purpose quantum communication by combining entanglement and its swapping in a sequence that addresses the challenges of achieving long distance communication with high fidelity associated with quantum...

Computer Science

Enhanced Atom-by-Atom Assembly of Defect-Free Two-Dimensional Mixed-Species Atomic Arrays

Ming-Rui Wei, Kunpeng Wang, Jiayi Hou +8 more·Jan 4, 2025

Defect-free single atom array in optical tweezers is a promising platform for scalable quantum computing, quantum simulation, and quantum metrology. Extending single-species array to mixed-species one promise to offer new possibilities. In our recent...

Physics

Experimental simulation of postselected closed timelike curves for decoding scrambled quantum information

Yi-Te Huang, Hsiang-Wei Huang, Jhen-Dong Lin +5 more·Jan 4, 2025

Quantum information scrambling (QIS) describes the rapid spread of initially localized information across an entire quantum many-body system through entanglement generation. Once scrambled, the original local information becomes encoded globally, ina...

Quantum Physics

Noise-Mitigated Variational Quantum Eigensolver with Pre-training and Zero-Noise Extrapolation

Wanqi Sun, Jungang Xu, Chenghua Duan·Jan 3, 2025

As a hybrid quantum-classical algorithm, the variational quantum eigensolver is widely applied in quantum chemistry simulations, especially in computing the electronic structure of complex molecular systems. However, on existing noisy intermediate-sc...

Computer SciencePhysics

Polynomial-time quantum Gibbs sampling for the weak and strong coupling regime of the Fermi-Hubbard model at any temperature

Štěpán Šmíd, Richard Meister, Mario Berta +1 more·Jan 2, 2025

Quantum computers hold the potential to revolutionise the simulation of quantum many-body systems, with profound implications for fundamental physics and applications like molecular and material design. However, demonstrating quantum advantage in sim...

PhysicsMathematicsMedicine

The phase diagram of quantum chromodynamics in one dimension on a quantum computer

Anton T. Than, Y. Y. Atas, Abhijit Chakraborty +8 more·Dec 31, 2024

The quantum chromodynamics (QCD) phase diagram, which reveals the state of strongly interacting matter at different temperatures and densities, is key to answering open questions in physics, ranging from the behaviour of particles in neutron stars to...

PhysicsMedicine

Efficient Approximate Degenerate Ordered Statistics Decoding for Quantum Codes via Reliable Subset Reduction

Ching-Feng Kung, Kao-Yueh Kuo, Ching-Yi Lai·Dec 30, 2024

Efficient and scalable decoding of quantum codes is essential for high-performance quantum error correction. In this work, we introduce Reliable Subset Reduction (RSR), a reliability-driven preprocessing framework that leverages belief propagation (B...

Quantum Physicscs.IT

Routing-based technique for defect mitigation in quantum error correction

Runshi Zhou, Fang Zhang, Linghang Kong +3 more·Dec 30, 2024

As quantum chips scale up for large-scale computation, hardware defects become inevitable and must be carefully addressed. In this work, we introduce Halma, a defect mitigation technique empowered by an expanded native gate set that incorporates the ...

Quantum Physics
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