Story perspectives

New Quantum Tomography Method Enhances Scalability and Efficiency

3/5/2026

Summary

Story summary

Compilation-based quantum process tomography (CQPT) reduces measurements to reconstruct quantum operations, addressing scalability.
The method uses a trainable compiler and needs only a single measurement per input state.
Researchers from Tohoku University, the Nara Institute of Science and Technology, and the University of Information Technology in Vietnam implemented CQPT with two versions: near-unitary gates and noisy channels.
They see CQPT as a practical alternative to traditional tomography for large systems.

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Story summary

Compilation-based quantum process tomography (CQPT) reduces measurements to reconstruct quantum operations, addressing scalability.
The method uses a trainable compiler and needs only a single measurement per input state.
Researchers from Tohoku University, the Nara Institute of Science and Technology, and the University of Information Technology in Vietnam implemented CQPT with two versions: near-unitary gates and noisy channels.
They see CQPT as a practical alternative to traditional tomography for large systems.