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Related Experiment Video

Updated: May 23, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Dynamics of disordered quantum systems with two- and three-dimensional tensor networks.

Joseph Tindall¹, Antonio Francesco Mello^1,2, Matthew Fishman¹

¹Center for Computational Quantum Physics, Flatiron Institute, New York, NY, USA.

Science (New York, N.Y.)

|May 21, 2026

Summary

Quantum annealing experiments on Ising spin glasses were claimed to be beyond classical reach. Tensor network simulations using belief propagation (BP) achieved state-of-the-art accuracy, demonstrating classical scalability for quantum physics verification.

Related Experiment Videos

Last Updated: May 23, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Area of Science:

Quantum Physics
Computational Science
Condensed Matter Physics

Background:

Recent quantum annealing experiments on D-Wave's Advantage2 system simulated Ising spin glasses.
These experiments were claimed to surpass classical computational capabilities.

Purpose of the Study:

To investigate the classical computational feasibility of simulating large-scale quantum annealing dynamics.
To verify universal Kibble-Zurek physics on systems with hundreds of qubits.

Main Methods:

Simulated Ising spin-glass models using lattice-specific tensor networks.
Employed belief propagation (BP) to manage entanglement during time evolution.
Utilized advanced BP variants for extracting expectation values.

Main Results:

Achieved state-of-the-art accuracies with modest computational resources.
Demonstrated scalability of the tensor network approach in both 2D and 3D.
Verified universal Kibble-Zurek physics on systems involving hundreds of qubits.

Conclusions:

Classical tensor network simulations, enhanced by belief propagation, can accurately model quantum annealing dynamics.
The computational reach of classical methods for quantum spin glasses is more extensive than previously claimed.
This approach provides a scalable pathway for verifying fundamental quantum phenomena.