Delft quantum researchers acknowledge a flaw in searching Majorana particles – IT Pro – News

Researchers at QuTech and Microsoft acknowledge the processing errors in their quantitative research on Majorana particles and have officially pulled them off. The team realized earlier this year that there was uncertainty about the research results.

at Back off note in nature Researchers admit that they made mistakes during the investigation. In their own words, quantum researchers can no longer claim to have observed majorana quasiparticles. Researchers stated again in February that there were doubts about the original 2018 study, when they announced that the report would be withdrawn. Then the team posted New report Which scholars mentioned that there are several Issues We arrived.

Researchers are now addressing these issues. This was suggested by Sergey Frolov and Vincent Morik, who pointed out the team’s “various discrepancies” between the initial measurement data and the findings reported in the research report. The researchers then re-examined the data and concluded that the study results “were unnecessarily corrected.”

The team also reported that a “new conductivity calibration” changed the original peak values, a review of the trial revealed. Therefore, the original observations were found to be incorrect. The team wrote: “We apologize to the community for the lack of scholarly accuracy in the original manuscript.” Preliminary data from Majorana Research is now available, too Generic Made.

QuTech, the Quantum Technology Research Center at Delft University of Technology and TNO, lets in Declaration He learned that the retraction of research was “a setback in Majorana research in quantum computer development”. QuTech says it will continue to search for Majorana quasiparticles and will also continue to collaborate with Microsoft.

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to Original experiences from 2018 They were performed on chips with a nanohashtage tag network of semiconductor and superimposed nanowires with a superconducting layer, as well as two putative Majoranas in superposition at the ends of the chips. The researchers took specific electric and magnetic fields Zero biasReal peaks, something that can only be explained by the presence of Majorana.

The height of these peaks fully coincides with previous expectations, which, according to the researchers, were an important indicator of the existence of such particles. Therefore, these results were revised and retracted. The research was conducted by Dutch researcher Leo Kouwenhoven and his team at Microsoft and QuTech.

There have been doubts about researching Majorana’s particles for some time. Speak in May 2020 Delta, The press platform of TU Delft, has already raised doubts about the 2018 study, which claimed there was conclusive evidence for the existence of the Majorana quasiparticle. Then I wrote delta about the potential raw data processing errors. This is now confirmed by the research team.

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