Quantum Brain

Papers

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

Total Papers

27,749

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1,196

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Research Volume

13,032 papers in 12 months (-2% vs prior quarter)

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

Qubit Platforms

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6,154 papers found

Mixture of Inverse Gaussians for Hemodynamic Transport (MIGHT) in Multiple-Input Multiple-Output Vascular Networks

Timo Jakumeit, Bastian Heinlein, Nunzio Tuccitto +3 more·Oct 11, 2025

Synthetic molecular communication (MC) in the cardiovascular system is a key enabler for many envisioned medical applications inside the human body, such as targeted drug delivery, early disease detection, and continuous health monitoring. The design...

q-bio.QMEmerging Tech

How much can we learn from quantum random circuit sampling?

Tudor Manole, Daniel K. Mark, Wenjie Gong +3 more·Oct 10, 2025

Benchmarking quantum devices is a foundational task for the sustained development of quantum technologies. However, accurate in situ characterization of large-scale quantum devices remains a formidable challenge: such systems experience many differen...

Quantum Physicsmath.STstat.AP

Efficient Emulation of Neutral Atom Quantum Hardware

Kemal Bidzhiev, Stefano Grava, Pablo le Henaff +3 more·Oct 10, 2025

Simulating the dynamics of neutral atom arrays is a challenging problem. To address this, we introduce two emulators, emu-sv and emu-mps, as computational backends for Pasqal's pulser package. Emu-sv is designed for high-precision state-vector simula...

Quantum Physics

Bounds in the Projective Unitary Group with Respect to Global Phase Invariant Metric

Bhanu Pratap Yadav, Mahdi Bayanifar, Olav Tirkkonen·Oct 10, 2025

We consider a global phase-invariant metric in the projective unitary group PUn, relevant for universal quantum computing. We obtain the volume and measure of small metric ball in PUn and derive the Gilbert-Varshamov and Hamming bounds in PUn. In add...

Quantum Physicscs.IT

Vari-Cool: a non-unitary quantum variational protocol for simulated cooling

Jeffrey Z. Song, Gilad Kishony, Erez Berg +1 more·Oct 10, 2025

We introduce a variational approach for preparing low energy states of arbitrary target Hamiltonians. The protocol is defined in terms of a repeated cycle consisting of p layers of unitary gates applied to the system and ancilla "bath" qubits, follow...

Quantum PhysicsMesoscale Physics

Fast CZ Gate via Energy-Level Engineering in Superconducting Qubits with a Tunable Coupler

Benzheng Yuan, Chaojie Zhang, Chuanbing Han +8 more·Oct 10, 2025

In superconducting quantum circuits, decoherence errors in qubits constitute a critical factor limiting quantum gate performance. To mitigate decoherence-induced gate infidelity, rapid implementation of quantum gates is essential. Here we propose a s...

Quantum Physics

A Decoy-like Protocol for Quantum Key Distribution: Enhancing the Performance with Imperfect Single Photon Sources

Chanaprom Cholsuk, Furkan Ağlarcı, Daniel K. L. Oi +2 more·Oct 10, 2025

Quantum key distribution (QKD) relies on single photon sources (SPSs), e.g. from solid-state systems, as flying qubits, where security strongly requires sub-Poissonian photon statistics with low second-order correlation values (\$g^{(2)}(0)\$). Howev...

Quantum Physicsphysics.comp-phphysics.optics

A Framework for Distributed Resource Allocation in Quantum Networks

Nitish K. Panigrahy, Leonardo Bacciottini, C. V. Hollot +5 more·Oct 10, 2025

We introduce a distributed resource allocation framework for the Quantum Internet that relies on feedback-based, fully decentralized coordination to serve multiple co-existing applications. We develop quantum network control algorithms under the math...

Quantum Physicscs.PF

Entangled Photon Pair Generator via Biexciton-Exciton Cascade in Semiconductor Quantum Dots and its Simulation

Simon Sekavčnik, Paul Kohl, Janis Nötzel·Oct 10, 2025

The generation of entangled photon pairs is highly useful for many types of quantum technologies. In this work an entangled photon pair generator that utilises the biexciton-exciton cascade in semiconductor quantum dots is described on a physical, ma...

Quantum Physics

A Davydov Ansatz approach to accurate system-bath dynamics in the presence of multiple baths with distinct temperatures

Chenlin Ma, Fulu Zheng, Kewei Sun +2 more·Oct 10, 2025

We perform benchmark simulations using the time-dependent variational approach with the multiple Davydov Ansatz (mDA) to study realtime nonequilibrium dynamics in a single qubit model coupled to two thermal baths with distinct temperatures. A broad r...

Quantum Physics

Gate Teleportation vs Circuit Cutting in Distributed Quantum Computing

Shobhit Gupta, Nikolay Sheshko, Daniel J. Dilley +3 more·Oct 10, 2025

Distributing circuits across quantum processor modules will enable the execution of circuits larger than the qubit count limitations of monolithic processors. While distributed quantum computation has primarily utilized circuit cutting, it incurs an ...

Quantum Physics

Designing and Evaluating an AI-enhanced Immersive Multidisciplinary Simulation (AIMS) for Interprofessional Education

Ruijie Wang, Jie Lu, Bo Pei +3 more·Oct 10, 2025

Interprofessional education has long relied on case studies and the use of standardized patients to support teamwork, communication, and related collaborative competencies among healthcare professionals. However, traditional approaches are often limi...

Emerging TechAIcs.HC

Towards Quantum Simulations of Sphaleron Dynamics at Colliders

Min-xin Huang, Ying-Ying Li, Yandong Liu +1 more·Oct 10, 2025

Sphaleron dynamics in the Standard Model at high-energy particle collisions remains experimentally unobserved, with theoretical predictions hindered by its nonperturbative real-time nature. In this work, we investigate a quantum simulation approach t...

Physics

Optimizing VQE Ansatz for Studying Tight-Binding Models with \textit{sd}-Interaction and On-Site Coulomb Repulsion

Oleg Udalov·Oct 9, 2025

The VQE algorithm is applied to the problem of finding the ground state of a lattice model with on-site Coulomb repulsion, nearest-neighbor hopping, and on-site sd-interaction. We compare the performance of several ansatze, including cluster and gene...

Quantum Physicscond-mat.str-el

Statistical Benchmarking of Optimization Methods for Variational Quantum Eigensolver under Quantum Noise

Silvie Illésová, Tomáš Bezděk, Vojtěch Novák +2 more·Oct 9, 2025

This work investigates the performance of numerical optimization algorithms applied to the State-Averaged Orbital-Optimized Variational Quantum Eigensolver for the H2 molecule under various quantum noise conditions. The goal is to assess the stabilit...

Quantum Physics

The charge-singlet measurement toolbox

Abhijit Chakraborty, Randy Lewis, Christine A. Muschik·Oct 9, 2025

Symmetry is fundamental to physical laws across different scales$\unicode{x2014}$from spacetime structure in general relativity to particle interactions in quantum field theory. Local symmetries, described by gauge theories, are central to phenomena ...

Quantum Physicshep-lathep-th

Degeneracy Cutting: A Local and Efficient Post-Processing for Belief Propagation Decoding of Quantum Low-Density Parity-Check Codes

Kento Tsubouchi, Hayata Yamasaki, Shiro Tamiya·Oct 9, 2025

Quantum low-density parity-check (qLDPC) codes are promising for realizing scalable fault-tolerant quantum computation due to their potential for low-overhead protocols. A common approach to decoding qLDPC codes is to use the belief propagation (BP) ...

Quantum Physics

A Structural Theory of Quantum Metastability: Markov Properties and Area Laws

Thiago Bergamaschi, Chi-Fang Chen, Umesh Vazirani·Oct 9, 2025

Statistical mechanics assumes that a quantum many-body system at low temperature can be effectively described by its Gibbs state. However, many complex quantum systems exist only as metastable states of dissipative open system dynamics, which appear ...

Quantum Physicscond-mat.stat-mechMathematical Physics

Platform-Agnostic Modular Architecture for Quantum Benchmarking

Neer Patel, Anish Giri, Hrushikesh Pramod Patil +6 more·Oct 9, 2025

We present a platform-agnostic modular architecture that addresses the increasingly fragmented landscape of quantum computing benchmarking by decoupling problem generation, circuit execution, and results analysis into independent, interoperable compo...

Quantum PhysicsAIcs.SE

Stability of digital and analog quantum simulations under noise

Jayant Rao, Jens Eisert, Tommaso Guaita·Oct 9, 2025

Quantum simulation is a central application of near-term quantum devices, pursued in both analog and digital architectures. A key challenge for both paradigms is the effect of imperfections and noise on predictive power. In this work, we present a ri...

Quantum Physics
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