Quantum Waltz: Nonlocal Transfer of Magnetic Flux ✦
Original: "Nonlocal transfer of quantized toroidal magnetic flux"
An experiment shows how quantized magnetic flux changes synchronously in two separated toroids, linked only by vector potential, with no magnetic field in between.
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Two superconducting rings, separated by emptiness. The magnetic field is locked inside, but every flux twist in one instantly resonates in the other — without currents, without field lines. This is not telepathy, but the dance of the vector potential, whose reality is proven by the Aharonov–Bohm effect. As the condensate grows, the dance accelerates, bumping against the light barrier — and here, perhaps, lies the clue to why large quantum systems lose coherence. Thus we trace the boundary where the quantum world gives way to the classical one.
🎯 Interestingly, the magnetic flux quantum Φ₀ = h/(2e) can be considered as the smallest 'atom' of magnetism in a superconductor. It serves as the 'step' of the dance in the described experiment.
\Phi_{\text{link}} = \Phi_b + s_2 \hat{\phi}_2 + s_3 \hat{\phi}_3
The total flux circulating in the common loop is the sum of the bias flux and signed contributions from each toroid.
\Omega^2_{\pm} = \frac{1}{C_T} \left( \frac{1}{L_T} + \frac{1}{L} \pm \frac{s_2 s_3}{L} \right)
The collective oscillation frequencies depend on the inductance of the common loop L and the relative orientation (winding direction) of the toroids.
Scientists
Christian DopplerD. B. McLaughlinDidier QuelozMichel MayorR. A. RossiterNiels BohrWave Function Collapse
superconductivity
quantum computer
quantum information
quantum measurement
quantum decoherence
Bose-Einstein condensate
quantum sensing
superposition
speed of light
interferometryLaws
Doppler effectHeisenberg uncertainty principlePauli exclusion principleprinciple of constancy of the speed of lightmass–energy equivalenceMaxwell's equations