Approaching Landauer's limit in a single superconducting vortex memory bit.

Nature Communications · 24 Sept 2026 · Journal Article · Open access

Fridman, Keren + more

The abstract is read at the publisher; the summary is JClub's.

Manipulating a superconducting vortex memory bit in a nanoscale double-well shows work for erasure at 4.2 K within an order of magnitude of Landauer’s limit (kBT ln 2).

Why it matters: The work targets the gap between experimentally achievable bit operations and the thermodynamic benchmark for erasure energy, especially under realistic driving constraints.
What they did: Experiments tested sinusoidally driven double-well pinning systems, mapping how driving force and frequency produce stochastic resonance at weak drives and adiabatic manipulation at strong, low-frequency drives. Numerical analysis then estimated the work for erasure under a protocol compatible with Landauer’s limit.
The result: The estimated erasure work at 4.2 K is within one order of magnitude of kBT ln 2, suggesting efficient memory operations and motivating integration with cryogenic quantum circuits or topological qubit platforms.

AI summary of the abstract · may contain errors · not medical advice · read the paper.

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Approaching Landauer's limit in a single superconducting vortex memory bit.

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