Cross-platform certification of the qubit space with a minimal number of parameters
We demonstrate a determinant dimension witness of a qubit space. Our test has a minimal number of independent parameters. We achieve it by mapping the Bloch sphere [Formula: see text]-rotation axis angle on the non-planar so-called Viviani curve. We ran our test on different platforms: IBM Quantum, IQM Resonance, and IonQ. Our investigations show that numerous qubits, especially from the newest IBM Heron family devices, fail the test by more than ten standard deviations. The nature of those deviations has no simple explanation as the test is robust against common imperfections.
Authors
- J. Tworzydło (ORCID: https://orcid.org/0000-0003-3410-5460)
- Tomasz Białecki (ORCID: https://orcid.org/0000-0002-6678-5950)
- Tomasz Rybotycki (ORCID: https://orcid.org/0000-0003-2493-0459)
- Adam Bednorz (ORCID: https://orcid.org/0000-0001-6329-2328)
- Josep Amengual i Batle (ORCID: https://orcid.org/0000-0003-3617-5796)
Institutions
- Nicolaus Copernicus Astronomical Center (PL)
- University of Warsaw (PL)
- Universitat de les Illes Balears (ES)
- Systems Research Institute (PL)
- AGH University of Krakow (PL)
Publication Details
- Journal
- Scientific Reports
- Published
- 2025-12-05
- DOI
- https://doi.org/10.1038/s41598-025-27248-7
- Primary Topic
- Quantum chaos and dynamical systems
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Poznańskie Centrum Superkomputerowo-Sieciowe
- Interdyscyplinarne Centrum Modelowania Matematycznego i Komputerowego UW