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Quantum Computing research

Quantum computing foundations, algorithms and programming, error correction and hardware, post-quantum security, and where the industry stands.

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523 entries

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  • Journal article
  • Review status unknown

Researchers report bit-flip noise hits QAOA harder than phase-flip noise

Original title: Asymmetric quantum error correction efficiently tackles application-specific noise effects

A study of a small flight-gate scheduling problem finds bit-flip errors degrade QAOA results more than phase-flip errors, suggesting tailored error correction.

Abhishek Yadav et al. · Added

  • Journal article
  • Peer reviewed
  • From PsiQuantum

Exact maths links toric code error rates to the solvable 2D Ising model

Original title: Ising on the donut: Regimes of topological quantum error correction from statistical mechanics

The study derives closed-form error-rate formulas for a post-selected toric code by mapping it exactly to the 2D Ising model.

Added

  • Journal article
  • Peer reviewed

Scheduling trick cuts GPU communication overhead in quantum circuit simulation

Original title: Lazy Qubit Reordering for Accelerating Parallel State-Vector-based Quantum Circuit Simulation

Researchers report scheduling methods that delay qubit reordering to speed up multi-GPU quantum circuit simulation.

Yusuke Teranishi et al. · Added · Released Oct 2024

  • Journal article
  • Peer reviewed

Photonic qudits used to run subspace-search VQE for excited state energies

Original title: Demonstration of subspace-search variational quantum eigensolver using photonic orbital angular momentum qudits

Researchers demonstrate subspace-search VQE on a photonic qudit platform, estimating excited state energies for a small molecule and spin chain.

Kang-Min Hu et al. · Added

  • Journal article
  • Review status unknown

Survey maps 26 QKD routing strategies and proposes a multi-criteria framework

Original title: Multi-Criteria Routing for Cryptographic Key Exchange in QKD Networks: Survey, Taxonomy, and a Conceptual Optimization Framework

A survey reviews 26 key-routing strategies for quantum networks and sketches a conceptual framework weighing throughput, trust and cost together.

Ivan Cvitic et al. · Added

  • Conference paper
  • Review status unknown

Differential testing tool QDiff hunts for bugs across quantum software stacks

Original title: QDiff: Differential Testing of Quantum Software Stacks

The authors present QDiff, a differential testing method that compares equivalent quantum programs to spot bugs in compilers, simulators and hardware.

Jiyuan Wang et al. · Added · Released Nov 2021

  • Journal article
  • Peer reviewed

New prep protocol curbs fragile boundaries in the XY surface code

Original title: Mitigating Temporal Fragility in the XY Surface Code

Researchers propose a GHZ-based preparation scheme that reduces fragile temporal boundaries in the XY surface code, say the study's authors.

Pei-Kai Tsai et al. · Added · Released Jul 2024

  • Journal article
  • Review status unknown

A preprint reports an MPI-style library for programming distributed quantum networks

Original title: NetQMPI: An MPI-Inspired library for programming Distributed Quantum Applications over Quantum Networks using NetQASM SDK

Researchers describe NetQMPI, a Python framework that adapts MPI concepts to simplify coding for distributed quantum computing over quantum networks.

F. Javier Cardama et al. · Added · Released Dec 2025

  • Preprint
  • Not peer reviewed
  • From China Mobile (Suzhou)

Preprint extends leakage-suppression pulse design to low-frequency quantum control

Original title: Higher-Order Magnus Corrections to Leakage Elimination Operator-Based Quantum Control Pulse Design in the Low-Frequency Regime

A preprint reworks a leakage-suppression control method so it also works at lower driving frequencies, using Magnus expansion corrections.

Added