# Nature retracts the 2018 Delft paper on quantized Majorana conductance, an early pillar of Microsoft's qubit bet

Canonical page: https://technooptimist.io/stories/nature-retracts-the-2018-delft-paper-on-quantized-majorana-conductance-9baa1366
Date: Mar 2021
About: [Microsoft Quantum](https://technooptimist.io/companies/microsoft-quantum.md) · [Majorana topological qubits](https://technooptimist.io/quantum/majorana.md)
Original source: https://research.tudelft.nl/en/publications/retraction-note-quantized-majorana-conductance-nature-2018-556-76

The authors, from Microsoft researcher Leo Kouwenhoven's group in Delft, retracted their 2018 Nature paper after outside physicists flagged problems. Re-analysis showed some data had been corrected without disclosure and mis-calibrated; with all the data included, the result read as evidence of Majorana modes no longer held.

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