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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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  • Preprint
  • Not peer reviewed

Preprint measures simulator cost of a near-term quantum text classifier

Original title: What Does It Cost to Simulate a Quantum Sentence Classifier? An Energy and Compute Perspective on Near-Term QNLP

A preprint reports that simulating a quantum sentence classifier cost far more compute time than a matched classical model, with no reliable accuracy gain.

Kishlay Kashyap et al. · Added

  • Journal article
  • Review status unknown

New tomography methods estimate unitary quantum processes for up to 13 qubits

Original title: Multi-stage tomography based on eigenanalysis for high-dimensional dense unitary processes in gate-based quantum computers

A journal article presents multi-stage eigenanalysis methods for estimating high-dimensional unitary quantum processes without sparsity constraints.

Yannick Deville et al. · Added · Released Jun 2025

  • Preprint
  • Not peer reviewed

Preprint proposes device-independent OT without trusted quantum hardware

Original title: Robust and leakage-resilient device-independent oblivious transfer in MiniQCryp

A preprint reports device-independent oblivious transfer and commitment protocols that tolerate faulty or leaky untrusted quantum devices.

Zhili Chen et al. · Added

  • Journal article
  • Review status unknown

Study tests a quantum algorithm for discrete portfolio optimisation under noise

Original title: Quantifying the advantages of applying quantum approximate algorithms to portfolio optimisation

The authors design an end-to-end QAOA pipeline for discrete portfolio selection and find noise, not algorithm design, sets its limits.

Haomu Yuan et al. · Added · Released Mar 2026

  • Preprint
  • Not peer reviewed

A preprint reports a near-optimal quantum algorithm for estimating Chern numbers

Original title: Chern-number estimation: nearly optimal quantum algorithm and provable quantum speedup

Researchers describe a quantum algorithm for topological invariant estimation and prove matching limits on its speed, plus computational hardness results.

Soichiro Imamura et al. · Added

  • Journal article
  • Review status unknown
  • From Chunghwa Telecom

Researchers propose hash-based anonymous certificate scheme for post-quantum security

Original title: Post-Quantum Cryptography Anonymous Scheme — PQCWC: Post-Quantum Cryptography Winternitz-Chen

A study proposes PQCWC, a hash-based anonymous certificate scheme using Winternitz signatures and a new butterfly key expansion method for quantum safety.

Added · Released Sep 2024

  • Journal article
  • Review status unknown

Researchers test quantum-computer simulation of a simple correlated-electron model

Original title: Variational quantum-algorithm based self-consistent calculations for the two-site DMFT model on noisy quantum computing hardware

A study examines using a variational quantum algorithm on real quantum hardware to solve a minimal DMFT model, finding noise still limits accuracy.

Jannis Ehrlich et al. · Added · Released May 2025

  • Preprint
  • Not peer reviewed

Preprint explores small quantum heads for cybersecurity threat detection

Original title: Quantum Machine Learning for Cybersecurity Applications: Simulation and Hardware Validation

A preprint reports that compact quantum models matched or slightly beat classical ones on two cybersecurity tasks, with hardware tests tracking simulations closely.

Zirui Zhu et al. · Added