Technology & AISignal

Scientists Demonstrate Quantum Chaos Control on IBM Processor

Researchers from Rutgers University and IBM have demonstrated real-time feedback control on a quantum processor, steering a system from chaotic behavior into an ordered state.

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Illustrative image: A focused young female scientist adjusts equipment in a lab setting.
Illustrative image; not a photograph of this reported event. Photo by cottonbro studio on Pexels

The Brief

People's Daily reported that scientists from Rutgers University, IBM, and other institutions demonstrated the ability to repeatedly check and reset qubits during operation on a processor with 156 qubits, driving the system from chaos into a controllable, ordered state. Conducting tests on an IBM Quantum Heron processor, the research team selected a system of up to 100 interconnected qubits and alternated between two tasks: mixing information between neighboring qubits to induce chaos, and repeatedly checking and resetting qubits to restore order. During the experiment, the team performed nearly 5000 two-qubit operations and nearly 5000 check-and-reset operations. When checking and resetting became more frequent, the system shifted into a controllable ordered state, displaying a phase transition when task frequencies approached parity. The experiment demonstrates that existing quantum hardware can coordinate quantum operations, measurements, and resets across larger-scale systems thousands of times, although achieving true fault-tolerant computing still requires continuous, reliable error detection and correction.

China context

To achieve fault-tolerant quantum computing, computers must repeatedly detect and correct errors during runtime while preserving quantum information as much as possible. Scientists have not yet built a true fault-tolerant quantum computer, viewing real-time feedback control as a key technology.

Key Takeaways

  • 1Scientists used an IBM Quantum Heron processor with up to 100 interconnected qubits to demonstrate real-time quantum feedback control.
  • 2Alternating between information mixing and nearly 5000 reset operations revealed a distinct phase transition into an ordered state.
  • 3Researchers established that chaotic behavior in quantum systems can be controlled through interventions at a defined critical frequency.

Sources

  1. 量子计算机从混沌走向有序获验证 — People's Daily · 10/13/2026