Quantum Brain

Papers

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

Total Papers

27,548

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12,896 papers in 12 months (-5% vs prior quarter)

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Papers by research theme (12 months). Hover for details.

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27,548 papers found

Programmable superconducting neuron with intrinsic in-memory computation and dual-timescale plasticity for ultra-efficient neuromorphic computing

Muen Wang, Shucheng Yang, Yuxiang Lin +8 more·Mar 5, 2026

The escalating energy demands of artificial intelligence pose a critical challenge to conventional computing. Leveraging the efficiency of event-driven, in-memory neuromorphic architectures into the superconducting circuits with ultra-high speed and ...

Emerging Tech

Rethinking Reproducibility in the Classical (HPC)-Quantum Era: Toward Workflow-Centered Science

Anna Vrtiak, Duuk Baten, Ariana Torres-Knoop·Mar 5, 2026

Scientific knowledge increasingly depends on complex computational processes where both hardware and software layers can influence research outcomes. As computational complexity grows, classical-quantum integration provides a lens for examining how t...

Emerging Tech

A Dynamical Lie-Algebraic Framework for Hamiltonian Engineering and Quantum Control

Yanying Liang, Ruibin Xu, Mao-Sheng Li +2 more·Mar 5, 2026

Determining the physically accessible unitary dynamics of a quantum system under finite Hamiltonian resources is a central problem in quantum control and Hamiltonian engineering. Dynamical Lie algebras (DLAs) provide the fundamental link between avai...

Quantum Physics

Spectral dynamics reservoir computing for high-speed hardware-efficient neuromorphic processing

Jiaxuan Chen, Ryo Iguchi, Sota Hikasa +1 more·Mar 5, 2026

Physical reservoir computing (PRC) is a promising brain-inspired computing architecture for overcoming the von Neumann bottleneck by utilizing the intrinsic dynamics of physical systems. However, a major obstacle to its real-world implementation lies...

Emerging Techphysics.app-ph

Quantum Weight Reduction with Layer Codes

Andrew C. Yuan, Nouédyn Baspin, Dominic J. Williamson·Mar 5, 2026

Quantum weight reduction procedures ease the implementation of quantum codes by sparsifying them, resulting in low-weight checks and low-degree qubits. However, to date, only few quantum weight reduction methods have been explored. In this work we in...

Quantum PhysicsMathematical Physics

Macromux: scalable postselection for high-threshold fault-tolerant quantum computation

Patrick Birchall, Jacob Bridgeman, Christopher Dawson +7 more·Mar 5, 2026

We introduce a new resource-efficient scheme for fault-tolerant quantum computation known as `macroscale multiplexing' (or simply `Macromux'), that utilizes scalable postselection to significantly improve the threshold of a given fault-tolerant proto...

Quantum Physics

Multistability and Self-Trapping in Cavity-Magnonic Dimer

Pooja Kumari Gupta, Amarendra K. Sarma, Subhadeep Chakraborty·Mar 5, 2026

We show that a driven-dissipative cavity-magnonic dimer supports multistability with coexisting symmetric and symmetry-broken steady states. The interplay between magnon Kerr nonlinearity and photon tunneling induces magnon self-trapping, leading to ...

Quantum Physics

ShieldBypass: On the Persistence of Impedance Leakage Beyond EM Shielding

Md Sadik Awal, Md Tauhidur Rahman·Mar 5, 2026

Electromagnetic (EM) shielding is widely used to suppress radiated emissions and limit passive EM side-channel leakage. However, shielding does not address active probing, where an adversary injects external radio-frequency (RF) signals and observes ...

CryptographyEmerging Tech

Robust composite two-qubit gates for silicon-based spin qubits

Yang-Yang Yu, Guang-Hui Zhang, Yan-Jie He +3 more·Mar 5, 2026

We propose a universal approach based on Hamiltonian inverse engineering to realize a set of parameterized two-qubit gates. This method possesses unique advantages to simultaneous control of transitions among four energy levels, providing a simpler a...

Quantum Physics

Quantum Algorithms for Network Signal Coordination

Vinayak Dixit, Richard Pech·Mar 5, 2026

There has been increasing interest in developing efficient quantum algorithms for hard classical problems. The Network Signal Coordination (NSC) problem is one such problem known to be NP complete. We implement Grover's search algorithm to solve the ...

Quantum PhysicsComplexityData Structurescs.NI

Programmable quantum simulation of anharmonic dynamics

Cameron McGarry, Teerawat Chalermpusitarak, Kai Schwennicke +9 more·Mar 5, 2026

Continuous-variable-discrete-variable (CV-DV) quantum simulators offer a natural route to simulating bosonic dynamics relevant to many branches of physics and chemistry. However, programmable simulation of arbitrary dynamics is an outstanding challen...

Quantum Physics

Long-Lived Mechanically-Detected Molecular Spins for Quantum Sensing

Sahand Tabatabaei, Pritam Priyadarsi, Daniel Tay +4 more·Mar 5, 2026

Quantum sensors based on individual spins provide unprecedented access to local magnetic fields in condensed matter, chemistry, and biology, with solid-state defect spins emerging as the leading platform. However, their molecular-sensing capabilities...

Quantum PhysicsMesoscale Physics

Photon statistics in waveguide QED: II Exact solutions in a thermodynamic limit

M. Eltohfa, F. Robicheaux·Mar 4, 2026

Waveguide quantum electrodynamics (WQED) offers a powerful framework for controlling light-matter interactions and realizing collective phenomena such as super- and subradiance. In general waveguide settings, the quantum dynamics spans the full Hilbe...

Quantum PhysicsAtomic Physics

Quantum Time Synchronization of Star Networks

Brian J. Rollick, Zhensheng Jia, Bernardo A. Huberman·Mar 4, 2026

We extend the single source approach of Valencia et al in order to synchronize the clocks of an N user start network, connected both through fiber and in free space. Entangled photon pairs from a centralized SPDC source are distributed through a 1 by...

Quantum PhysicsEmerging Techcs.NI

Unified Integer and Fractional Quantum Hall Effects from Boundary-Induced Edge-State Quantization

Pedro Pereyra·Mar 4, 2026

Despite the success of Landau-level theory and edge-state transport formalisms, a direct microscopic link between bulk quantization and the observed hierarchy of quantum Hall plateaus has not been established. In particular, no unified microscopic me...

Mesoscale PhysicsQuantum Physics

Quantum foundations for quantum technologies in the International Year of Quantum (2025)

Angelo Bassi·Mar 4, 2026

From the very beginning, Quantum Mechanics has been accompanied by crucial foundational questions: the possibility of visualizing physical processes, the limits of measurement epitomized by the Heisenberg uncertainty principle, the existence of a dee...

Quantum Physics

Robustness as a thermodynamic currency: work advantages and preparation costs of nonclassical states

Luis Pedro Garcıa-Pintos, Tanmoy Biswas, Chandan Datta·Mar 4, 2026

Understanding whether uniquely quantum features can provide concrete advantages in thermodynamic processes is a central objective of quantum thermodynamics. A key challenge is quantifying how different forms of non-classicality can be systematically ...

Quantum Physics

Quantum Cramér-Rao bound on quantum metric as a multi-observable uncertainty relation

Wei Chen·Mar 4, 2026

A version of quantum Cramér-Rao bound dictates that the covariance of any set of operators is bounded by a product of the derivatives of expectation values and the inverse of quantum metric. We elaborate that because quantum metric itself is the cova...

Quantum Physics

Photon statistics in chiral waveguide QED: I Mean field and perturbative expansions

M. Eltohfa, F. Robicheaux·Mar 4, 2026

Waveguide Quantum Electrodynamics (WQED) offers a suitable stage for controlling the interaction of light with atoms, allowing for collective phenomena such as super- and subradiance. In a chiral waveguide setup, the quantum state evolves through all...

Quantum PhysicsAtomic Physics

Fault-tolerant execution of error-corrected quantum algorithms

Michael A. Perlin, Zichang He, Anthony Alexiades Armenakas +9 more·Mar 4, 2026

Scaling up quantum algorithms to tackle high-impact problems in science and industry requires quantum error correction and fault tolerance. While progress has been made in experimentally realizing error-corrected primitives, the end-to-end execution ...

Quantum Physics
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