Quantum Observatory

Research overview

A weekly view of quantum computing and quantum information research.

Last collected Oct 19, 20265 of 6 collection sources available · View coverage
New research
320
Unique linked works
Conference talks
0
Accepted contributions
Reports
0
Known dates only
Active topics
8
Topics can overlap

Below threshold: what a surface-code memory proves

Increasing code distance can improve a logical memory while leaving important computational capabilities untested. Use the measured task, denominator, and decoder conditions to assess the claim.

Read the full analysis →

Recent research

Recent papers and reports from selected public sources. Follow each title to the original material.

Explore all research ↗
  1. 2026-10-16
    PreprintarXiv

    Demonstration of Logical Error Suppression in a Surface Code Memory on a Cloud-Accessible IBM Superconducting Processor

    Shuwen Kan, Aaron Hoyt, Sean Garner, Ethan Vo

    Citations not indexed
  2. 2026-10-16
    PreprintarXiv

    Task-aligned spectral inductive biases in parameterized quantum circuits

    Felix Frohnert, Adrián Pérez-Salinas, Sebastian Lange, Marcus Schwaebisch

    Citations not indexed
  3. 2026-10-16
    PreprintarXiv

    Leveraging verifiable structure in quantum circuits to find more efficient compilations with agentic AI

    Tanuj Khattar, Nicholas C. Rubin, Craig Gidney, Michael Broughton

    Citations not indexed
  4. 2026-10-16
    PreprintarXiv

    Quality-of-Transmission Estimation in Quantum Networks: Compute, Simulate, or Learn?

    Anis Bekri, Amar Abane, Van Sy Mai, Abdella Battou

    Citations not indexed
  5. 2026-10-16
    PreprintarXiv

    Anyonic Neural Network Wavefunctions

    Andres Perez Fadon, Pok Man Tam, Leyna Shackleton

    Citations not indexed
  6. 2026-10-16
    PreprintarXiv

    Experimental Demonstration of a Balanced Travelling Wave Parametric Amplifier

    Nikita Klimovich, Peter K. Day, Henry G. Leduc, Boon-Kok Tan

    Citations not indexed
  7. 2026-10-16
    PreprintarXiv

    Transport and thermalization under noncommuting localized constraints

    Amir Nesturov, Attila Takács, Lenart Zadnik

    Citations not indexed
  8. 2026-10-16
    PreprintarXiv

    Scaling of entanglement with distance between subsystems: detection of phase transitions in the $t'$-$π$-flux model

    Maksim Ulybyshev, Gergő Roósz, Gabriele Bellomia, Karsten Held

    Citations not indexed
  9. 2026-10-16
    PreprintarXiv

    Expressivity of IQP Feature-Map Quantum Kernels via Reproducing Kernel Hilbert Spaces

    Valeria Repetto, Stefano Melchionna, Romina D'Aurizio

    Citations not indexed
  10. 2026-10-16
    PreprintarXiv

    Impact of Irrep Truncations on Quantum Simulations of QCD

    Patrick Draper, Drishti Gupta

    Citations not indexed

Read the evidence

Guides and analysis that explain how to interpret the index.

Below threshold: what a surface-code memory proves

Increasing code distance can improve a logical memory while leaving important computational capabilities untested. Use the measured task, denominator, and decoder conditions to assess the claim.

Analysis · Quantum Observatory

48 logical qubits: read the acceptance conditions too

A logical-qubit count becomes informative when paired with encoding, circuit, evaluation metric, and retained trials. This note offers a worksheet for comparing demonstrations with different selection conditions.

Analysis · Quantum Observatory

Better than physical: which circuit is the baseline?

An improvement factor needs its physical baseline and selection rule. Use this paper to practice comparing an encoded circuit with the actual unencoded task, rather than a headline gate fidelity.

Analysis · Quantum Observatory