Reconstructing quantum state as qubit number increases may soon need only polynomial (not exponential) number of measurements

https://phys.org/news/2026-03-protocol-reconstructs-quantum-states-large.html

"scalable, demonstrated on systems up to 96 qubits, limit was 10 to 20), goal: 100s... measurement requires significantly fewer data points, still capturing full quantum state mathematical description... also verifies state's accuracy... error correction: pinpoints exactly where noise/ decoherence entering system... enables comparing performance of different quantum architectures (superconducting vs. trapped ions)... currently being integrated into open-source quantum software frameworks"

Related: A universal scheme can verify any quantum state
https://phys.org/news/2026-03-universal-scheme-quantum-state.html