At Mines Paris, an international workshop on controlling quantum systems
Automation, mathematics and quantum physics meet around decoherence, with 2025 Nobel laureate Michel Devoret among the speakers.
Mines Paris - PSL hosted an international workshop, from 2 to 5 June 2026, on using control theory and feedback to stabilise fragile quantum systems. Physics Nobel laureate Michel Devoret was among the speakers.
Why it matters
Stabilising qubits against decoherence is a practical bottleneck for reliable quantum machines. The workshop shows a French school of control and feedback, backed by an ERC grant, contributing to that effort alongside international peers.
Key takeaways
- The workshop ran from 2 to 5 June 2026 at Mines Paris - PSL, bringing together specialists in automation, mathematics and quantum physics.
- Michel Devoret, awarded the 2025 Nobel Prize in Physics, presented work on superconducting circuits; Christiane Koch discussed optimising how qubits are driven.
- The event builds on the ERC Advanced Grant Q-Feedback, led by Pierre Rouchon, which links Mines Paris - PSL, ENS - PSL and Inria.
- A central idea is to adapt classical feedback techniques to the quantum world, where measuring a system already disturbs it.
Mines Paris - PSL hosted an international workshop from 2 to 5 June 2026, gathering specialists in automation, mathematics and quantum physics around a shared problem: keeping fragile quantum systems stable.
The difficulty is decoherence. Qubits lose their quantum properties at the slightest disturbance, so building reliable machines calls for careful control. A recurring idea was to adapt classical feedback methods to a setting where measuring a system already perturbs it.
Among the speakers, Michel Devoret, awarded the 2025 Nobel Prize in Physics, presented work on superconducting circuits, and Christiane Koch discussed ways to optimise how qubits are driven. The event grew out of the ERC Advanced Grant Q-Feedback, led by Pierre Rouchon, which links Mines Paris - PSL, ENS - PSL and Inria.
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