Oxford physicists recreate quantum effect that halts a particle

· Science · United Kingdom

Physicists at the University of Oxford have recreated a bizarre quantum effect in which a particle responds to a magnetic field without ever traveling through it. Using a hybrid quantum computer, the team introduced a simulated magnetic flux and demonstrated that quantum interference could completely halt a particle's movement. The experiment reproduces a long-studied prediction in a controllable setting, offering a new way to probe how gauge fields and topology influence quantum motion. Because the effect is implemented on a quantum processor, it also illustrates how quantum computers can serve as testbeds for fundamental physics that is difficult to realize in solid-state materials. The result adds to a growing body of work using quantum simulation to explore phenomena that are hard to access directly.

Why it matters：It demonstrates that quantum computers can simulate fundamental gauge-field physics that is hard to realize in materials, strengthening the case for quantum simulation as a research tool.

Key points

  • The experiment simulated magnetic flux on a hybrid quantum computer.
  • Quantum interference was used to halt the particle's movement.
  • The particle responded to the field without passing through it.

Sources (original reporting)

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