Quantum Brain

Papers

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

Total Papers

27,548

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1,041

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12,912 papers in 12 months (-5% vs prior quarter)

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27,548 papers found

Utility-scale quantum computational chemistry

Davide Castaldo, Markus Reiher·Mar 19, 2026

Chemistry and materials science are widely regarded as potential killer application fields for quantum hardware. While the dream of unlocking unprecedented simulation capabilities remains compelling, quantum algorithm development must adapt to the ev...

Quantum Physicscond-mat.str-elphysics.chem-phphysics.comp-ph

Photon-echo synchronization and quantum state transfer in short quantum links

Hong Jiang, Carlos Barahona-Pascual, Juan José García-Ripoll·Mar 19, 2026

The short quantum link regime, where the photon travel time $τ$ is comparable to the emitter lifetime $1/γ$, is experimentally relevant but theoretically underexplored: existing few-mode descriptions lose validity as retardation and multimode effects...

Quantum Physics

Fair Decoder Baselines and Rigorous Finite-Size Scaling for Bivariate Bicycle Codes on the Quantum Erasure Channel

Tushar Pandey·Mar 19, 2026

Fair threshold estimation for bivariate bicycle (BB) codes on the quantum erasure channel runs into two recurring problems: decoder-baseline unfairness and the conflation of finite-size pseudo-thresholds with true asymptotic thresholds. We run both u...

Quantum Physics

Exact Law of Quantum Reversibility under Gaussian Pure Loss

Ammar Fayad·Mar 19, 2026

Classical reverse diffusion is generated by changing the drift at fixed noise. We show that the quantum version of this principle obeys an exact law with a sharp phase boundary. For Gaussian pure-loss dynamics -- the canonical model of continuous-var...

Quantum PhysicsMathematical Physicsphysics.optics

Multiparameter quantum estimation and Stirling Engine Performance in a Gravitational Cat State System

Omar Bachain, Mohamed Amazioug, Rachid Ahl Laamara·Mar 19, 2026

We investigate the multiparameter quantum estimation and quantum thermodynamics properties of a gravitational cat state (gravcat) system composed of two interacting massive particles confined in double-well potentials. The system is described by an e...

Quantum Physics

End-to-End Simulation of Chemical Dynamics on a Quantum Computer

Elliot C. Eklund, Arkin Tikku, Patrick Sinnott +4 more·Mar 19, 2026

Simulations of chemical dynamics are a powerful means for understanding chemistry. However, classical computers struggle to simulate many chemical processes, especially non-adiabatic ones, where the Born-Oppenheimer approximation breaks down. Quantum...

Quantum Physics

Resonances, Recurrence Times and Steady States in Monitored Noisy Qubit Systems

Shuanger Ma, Sabine Tornow, Eli Barkai·Mar 19, 2026

We study non-equilibrium steady states and recurrence times in noisy, stroboscopically monitored qubit systems using complete measurements. In the noiseless limit, recurrence times are integer-quantized, with dips to lower integers when sampling appr...

cond-mat.stat-mechQuantum Physics

XCOM: Full Mesh Network Synchronization and Low-Latency Communication for QICK (Quantum Instrumentation Control Kit)

Diego Martin, Luis H. Arnaldi, Kenneth Treptow +5 more·Mar 19, 2026

Quantum computing experiments and testbeds with large qubit counts have until recently been a privilege afforded only to large companies or quantum technologies where scaling to hundreds or thousands of qubits does not require a substantial increase ...

Quantum Physicsphysics.ins-det

Dependence of Lindbladian spectral statistics on the integrability of no-jump Hamiltonians and the recycling terms

Dingzu Wang, Hao Zhu, Guo-Feng Zhang +1 more·Mar 19, 2026

Spectral statistics probe integrability versus chaos and have recently been extended to Markovian open quantum systems described by Lindbladians, whose quantum-trajectory unraveling decomposes the evolution into no-jump dynamics generated by an effec...

Quantum Physicscond-mat.stat-mech

Long Distance Daylight Drone-based Quantum Key Distribution under Relative Motion

Chun Zhou, Yanyang Zhou, Ping Wang +13 more·Mar 19, 2026

Low-altitude drones can serve as dynamic nodes apparently mitigating terrain-induced impacts for quantum networks. However, it is extremely hard to establish a sable quantum link in a drone-based dynamic platform, which requires centimeter-level posi...

Quantum Physics

Cavity Control of Strongly Correlated Electrons Beyond Resonant Coupling

Lukas Grunwald, Xinle Cheng, Emil Viñas Boström +4 more·Mar 19, 2026

Interfacing materials with electromagnetic cavities offers a route to modify equilibrium properties through structured vacuum fluctuations. The coupling of light with correlated electrons lacks a characteristic energy scale, making vacuum induced mod...

Quantum PhysicsMesoscale Physicscond-mat.str-el

Quantum and classical approaches to the optimization of highway platooning: the two-vehicle matching problem

Chinonso Onah, Agneev Guin, Carsten Othmer +2 more·Mar 19, 2026

Aerodynamic drag reduction on highways through vehicle platooning is a well-known concept, but it has not yet seen systematic uptake, arguably because of significant technological and legislative obstacles. As a low-tech entry point to real multi-veh...

Quantum PhysicsEmerging Techphysics.app-ph

Optimal and improved gate decompositions for accelerated classical simulation of near-Gaussian fermionic circuits

Beatriz Dias, Jan Lukas Bosse, James R. Seddon·Mar 19, 2026

Fermionic Gaussian circuits can be simulated efficiently on a classical computer, but become universal when supplemented with non-Gaussian operations. Similar to stabilizer circuits augmented with non-stabilizer resources, these non-Gaussian circuits...

Quantum Physics

Certifying ergotropy under partial information

Egle Pagliaro, Leonardo Zambrano, Mir Alimuddin +3 more·Mar 19, 2026

Ergotropy, the maximum work extractable from a quantum system, is a central resource in quantum physics. Computing ergotropy is well established when the system state is fully known, but its estimation under partial information remains an open proble...

Quantum PhysicsMesoscale Physicscond-mat.stat-mech

Quantum Advantage: a Tensor Network Perspective

Augustine Kshetrimayum, Saeed S. Jahromi, Sukhbinder Singh +1 more·Mar 19, 2026

We review the recent quantum advantage experiments by IBM, D-Wave, and Google, focusing on cases where efficient classical simulations of the experiment were demonstrated or attempted using tensor network methods. We assess the strengths and limitati...

Quantum Physicscond-mat.str-el

Local asymmetry in interference as a probe of quantum probability

Yong Zhang·Mar 19, 2026

Quantum interference provides one of the most sensitive probes of quantum mechanics. While linear superposition fixes the positions and quadratic curvature of interference fringes, it remains unclear whether the probabilistic postulate itself, the Bo...

Quantum Physics

Time-Multiplexed Distributed Quantum Sensing

Hanbom Yoo, Hyukgun Kwon, Seongjin Hong·Mar 19, 2026

Quantum metrology enables parameter estimation beyond classical limits by exploiting nonclassical resources such as squeezing and entanglement. In distributed quantum sensing, Heisenberg scaling has been extended from $1/N^2$ to $1/(NM)^2$ through en...

Quantum Physics

If Quantum Measurements Are Secretly Continuous Nonunitary Processes, Weak Measurements Can Detect It

Igor Prlina, Milutin Živković·Mar 19, 2026

The standard approach to quantum measurements is to assume that they lead to effectively instantaneous collapse of the quantum state. However, if we assume that we are unable to enforce at what exact moment of time the measurement occurs due to a fin...

Quantum Physics

Comparing optical-microwave conversion and all-microwave control schemes for a transmon qubit

Volodymyr Monarkha, Massimo Borrelli, Reza Hajitashakkori Kenari +13 more·Mar 19, 2026

We report a comparative study on transmon qubit control using (i) conventional attenuated coaxial microwave line and (ii) an optical control system using modulated laser light delivered over telecommunications optical fiber to a photodiode located at...

Quantum Physicsphysics.app-ph

A Flexible GKP-State-Embedded Fault-Tolerant Quantum Computation Configuration Based on a Three-Dimensional Cluster State

Peilin Du, Jing Zhang, Tiancai Zhang +3 more·Mar 19, 2026

The integration of diverse quantum resources and the exploitation of more degrees of freedom provide key operational flexibility for universal fault-tolerant quantum computation. In this work, we propose a flexible Gottesman-Kitaev-Preskill-state-emb...

Quantum Physics
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